Fix minor issues and create a .clangd config for different builddirs

Reviewed-on: #20

.clangd

@@ -0,0 +1,11 @@
+---
+If:
+  PathMatch: tests/.*
+CompileFlags:
+  CompilationDatabase: builddir-debug/
+
+---
+If:
+  PathMatch: src/.*
+CompileFlags:
+  CompilationDatabase: builddir/

.gitea/workflows/build.yaml

@@ -14,7 +14,7 @@ jobs:
       - name: install meson
         run: apt-get -yq install meson
       - name: Install build dependencies
-        run: apt-get -yq install libusb-1.0-0-dev libspdlog-dev libfmt-dev libpango1.0-dev libcairo2-dev gcovr
+        run: apt-get -yq install libusb-1.0-0-dev libpango1.0-dev libcairo2-dev gcovr
       - name: get build environment versions
         run: |
           echo "=== Start meson version ==="
@@ -32,29 +32,25 @@ jobs:
           echo "=== Start dependency package version ==="
           apt-cache policy libpango1.0-dev
           apt-cache policy libcairo2-dev
-          apt-cache policy libfmt-dev 
-          apt-cache policy libspdlog-dev
           apt-cache policy libusb-1.0-0-dev
           echo "=== End dependency package version ==="
-      - name: setup builddir
-        run: meson setup builddir -Db_coverage=true
-      - name: run unit tests
-        run: ninja -C builddir test
-      - name: calculate coverage
-        run: ninja -C builddir coverage-text
+      - name: Build ptprnt debug
+        run: scripts/build.sh debug --coverage --test
+      - name: Generate coverage
+        run: scripts/generate_coverage.sh --text
       - name: Coverage report
-        run: cat ./builddir/meson-logs/coverage.txt
-      - name: build and test dist package
-        run: ninja -C builddir dist
-      - name: upload dist package
+        run: cat ./coverageReport/coverage.txt
+      - name: build release
+        run: scripts/build.sh release
+      - name: upload release binary
         uses: actions/upload-artifact@v3
         with:
           name: ptprnt
-          path: ./builddir/meson-dist/*
+          path: ./builddir/ptprnt
           if-no-files-found: error
       - name: upload coverage report
         uses: actions/upload-artifact@v3
         with:
           name: coverage.txt
-          path: ./builddir/meson-logs/coverage.txt
+          path: ./coverageReport/coverage.txt
           if-no-files-found: error

.gitignore

@@ -1,5 +1,5 @@
 # Folder
-builddir/
+builddir*/
 subprojects/*
 .cache/
 coverageReport/

.vscode/c_cpp_properties.json

@@ -5,9 +5,10 @@
       "compilerPath": "/usr/bin/clang",
       "cStandard": "c11",
       "cppStandard": "c++20",
-      "compileCommands": "${workspaceFolder}/builddir/compile_commands.json",
       "browse": {
-        "path": ["${workspaceFolder}"]
+        "path": [
+          "${workspaceFolder}"
+        ]
       }
     }
   ],

.vscode/settings.json

@@ -1,7 +1,6 @@
 {
   "clangd.arguments": [
     "-background-index",
-    "-compile-commands-dir=builddir/"
   ],
   "editor.formatOnType": false,
   "editor.formatOnSave": true,

README.md

@@ -2,9 +2,33 @@
 
 A command-line label printer driver for Brother P-touch printers on Linux. Prints text labels directly from your terminal.
 
+## Example
+
+Too print a label, provide your text and optionally a font and a font size. This command will print the label below on a Brother P-Touch P700:
+
+```bash
+ptprnt --font "NotoMono Nerd Font" --fontsize 32 --text "🖶 ptprnt v0.2.0 🥰"
+```
+
+![Printed label that proudly reads 🖶 ptprnt v0.2.0 🥰](docs/assets/label_print_v0_2_0.jpg)
+
 ## Quick Start
 
-**Install dependencies:**
+## Quick Start
+
+**Binary dependencies**
+
+Arch Linux:
+```bash
+pacman -S pango cairo libusb 
+```
+
+Debian/Ubuntu:
+```bash
+apt install libpangocairo-1.0-0 libusb-1.0-0
+```
+
+**Build dependencies:**
 
 Arch Linux:
 ```bash
@@ -13,17 +37,162 @@ pacman -S libusb spdlog pango cairo meson
 
 Debian/Ubuntu:
 ```bash
-apt-get install libusb-1.0-0-dev libspdlog-dev libfmt-dev libpango1.0-dev libcairo2-dev meson
+apt install libusb-1.0-0-dev libspdlog-dev libfmt-dev libpango1.0-dev libcairo2-dev meson
 ```
 
+Note: spdlog is built as a subproject and statically linked, so it's not required as a system dependency.
+
 **Build and run:**
 Clone this repository first and enter the directory. Then build:
 ```bash
+# Using the build script (recommended)
+./scripts/build.sh release
+builddir/ptprnt --help
+
+# Or manually with meson
 meson setup builddir
 ninja -C builddir
 builddir/ptprnt --help
 ```
 
+## Usage
+
+### Basic Text Printing
+
+Print a simple label with text:
+```bash
+ptprnt --text "Hello World"
+```
+
+### Formatting Options
+
+Control the appearance of your labels with these options:
+
+- `--font FONT_NAME` - Set the font (e.g., "NotoMono Nerd Font", "DejaVu Sans")
+- `--fontsize SIZE` - Set font size in points (default: 24)
+- `--halign ALIGNMENT` - Horizontal alignment: `left`, `center`, `right` (default: center)
+- `--valign ALIGNMENT` - Vertical alignment: `top`, `center`, `bottom` (default: center)
+
+**Example with formatting:**
+```bash
+ptprnt --font "DejaVu Sans Mono" --fontsize 28 --halign left --text "Left aligned text"
+```
+
+### Multiple Text Elements
+
+You can add multiple text elements to a single label. Formatting options apply to all subsequent `--text` arguments until changed:
+
+```bash
+ptprnt \
+  --font "DejaVu Sans" --fontsize 32 --text "Large Title" \
+  --fontsize 18 --text "Smaller subtitle"
+```
+
+### Multiple Labels (Stitching)
+
+Create multiple labels that will be stitched together horizontally using the `--new` flag:
+
+```bash
+ptprnt \
+  --text "Label 1" \
+  --new \
+  --text "Label 2" \
+  --new \
+  --text "Label 3"
+```
+
+Each `--new` starts a fresh label. The labels are automatically stitched together with 60 pixels of spacing.
+
+**Example - Creating a series of address labels:**
+```bash
+ptprnt \
+  --font "DejaVu Sans" --fontsize 20 \
+  --text "Peter Lustig" --text "Am Bauwagen 1" \
+  --new \
+  --text "Donald Duck" --text "Blumenstraße 13" \
+  --new \
+  --text "Homer Simpson" --text "742 Evergreen Terrace"
+```
+
+**Example - Mixed formatting across labels:**
+```bash
+ptprnt \
+  --fontsize 32 --text "BIG" \
+  --new \
+  --fontsize 16 --text "small" \
+  --new \
+  --fontsize 24 --text "medium"
+```
+
+### Printer Selection
+
+By default, ptprnt auto-detects your printer. You can explicitly select a printer:
+
+```bash
+ptprnt --printer P700 --text "Hello"
+```
+
+List all available printer drivers:
+```bash
+ptprnt --list-all-drivers
+```
+
+### Testing with Fake Printer
+
+Before printing to your real printer, you can test your label output using the built-in fake printer. This generates a PNG image file instead of printing:
+
+```bash
+ptprnt --printer FakePrinter --text "Test Label"
+```
+
+This will create a file named `fakelabel_YYYYMMDD_HHMMSS.png` in your current directory with a preview of your label. Use this to:
+- Verify text formatting and layout
+- Test multi-label stitching
+- Preview before wasting label tape
+
+**Example workflow:**
+```bash
+# First, test your label design
+ptprnt --printer FakePrinter \
+  --font "DejaVu Sans" --fontsize 28 \
+  --text "Test Design" --text "Check Layout"
+
+# View the generated PNG file to verify
+# If satisfied, print to real printer
+ptprnt --printer P700 \
+  --font "DejaVu Sans" --fontsize 28 \
+  --text "Test Design" --text "Check Layout"
+```
+
+### Verbose Output
+
+Enable detailed logging for debugging:
+
+```bash
+ptprnt --verbose --text "Debug mode"
+```
+
+Enable USB trace to see raw USB communication:
+```bash
+ptprnt --trace --text "USB trace mode"
+```
+
+### Complete Example
+
+An example using a mixed bag of features:
+
+```bash
+ptprnt \
+  --verbose \
+  --printer P700 \
+  --font "NotoMono Nerd Font" \
+  --fontsize 28 --halign center --text "Product Label" \
+  --fontsize 20 --text "SKU: 12345" \
+  --new \
+  --fontsize 24 --text "Backup Label" \
+  --fontsize 18 --text "Date: 2025-10-16"
+```
+
 ## Supported Printers
 (I need more printers for verification 😉)
 
@@ -33,17 +202,50 @@ builddir/ptprnt --help
 
 This is a modern C++20 rewrite of [ptouch-print](https://git.familie-radermacher.ch/linux/ptouch-print.git). Credits to Dominic Rademacher for reverse engineering the USB protocol.
 
+**Build script:**
+```bash
+# Release build (tests disabled for faster builds)
+./scripts/build.sh release
+
+# Debug build (tests enabled)
+./scripts/build.sh debug
+
+# Debug with tests
+./scripts/build.sh debug --test
+
+# Debug with coverage
+./scripts/build.sh debug --coverage
+
+# Clean all build directories
+./scripts/build.sh clean
+
+# Show all options
+./scripts/build.sh --help
+```
+
+**Note:** Tests are only built in debug mode to keep release builds fast and small. Release builds do not include test binaries or link against gtest/gmock.
+
 **Running tests:**
 ```bash
+# Using build script
+./scripts/build.sh --test
+
+# Or manually
 ninja -C builddir test
 ```
 
 **Coverage reports:**
 ```bash
-meson setup builddir -Db_coverage=true
-ninja -C builddir
-ninja -C builddir test
-ninja -C builddir coverage-text
+# 1. Build with coverage enabled and run tests
+./scripts/build.sh debug --coverage --test
+
+# 2. Generate coverage reports
+./scripts/generate_coverage.sh              # All formats (html, xml, text)
+./scripts/generate_coverage.sh --html       # HTML only
+./scripts/generate_coverage.sh --text       # Text only
+./scripts/generate_coverage.sh --xml        # XML only (for CI/CD)
+./scripts/generate_coverage.sh --html --xml # HTML and XML
+
 ```
 
 ## License

generate_coverage.sh

@@ -1,27 +0,0 @@
-#!/bin/bash
-
-SCRIPT_PATH="$( cd -- "$(dirname "$0")" >/dev/null 2>&1 ; pwd -P )"
-HTML_COV_PATH="coverageReport/html"
-XML_COV_PATH="coverageReport/xml"
-HTML_START_FILE="index.html"
-
-echo "Generating Coverage report for ptprnt"
-
-ninja -C builddir
-ninja -C builddir test
-
-mkdir -p ${HTML_COV_PATH}
-gcovr --html --html-details --html-syntax-highlighting --filter src --output ${HTML_COV_PATH}/${HTML_START_FILE}
-
-mkdir -p ${XML_COV_PATH}
-gcovr --xml-pretty --filter src --output ${XML_COV_PATH}/cov.xml
-
-if [ $? ] 
-then
-  echo "Coverage report successful generated!"
-  echo "Open: file://${SCRIPT_PATH}/${HTML_COV_PATH}/${HTML_START_FILE}"
-else
-  echo "Error generating coverage report!"
-fi
-
-rm *.gcov

meson.build

@@ -20,10 +20,16 @@ project(
 )
 
 usb_dep = dependency('libusb-1.0')
-log_dep = dependency('spdlog')
-fmt_dep = dependency('fmt')
 pangocairo_dep = dependency('pangocairo')
 
+# spdlog with std::format (C++20) - static library
+spdlog_proj = subproject('spdlog', default_options: ['std_format=enabled', 'default_library=static', 'compile_library=true'])
+log_dep = spdlog_proj.get_variable('spdlog_dep')
+
+if not log_dep.found()
+    error('spdlog not found, can not proceed')
+endif
+
 # CLI11
 cli11_proj = subproject('cli11')
 cli11_dep = cli11_proj.get_variable('CLI11_dep')
@@ -50,20 +56,27 @@ ptprnt_exe = executable(
     'ptprnt',
     'src/main.cpp',
     install: true,
-    dependencies: [usb_dep, log_dep, fmt_dep, pangocairo_dep, cli11_dep],
+    dependencies: [usb_dep, log_dep, pangocairo_dep, cli11_dep],
     include_directories: incdir,
     sources: [ptprnt_srcs],
     cpp_args: cpp_args,
 )
 
 ### Unit tests
+# Only build tests for debug builds or when explicitly enabled
+build_tests = get_option('buildtype') == 'debug' or get_option('build_tests')
 
-# GTest and GMock
-gtest_proj = subproject('gtest')
-gtest_dep = gtest_proj.get_variable('gtest_main_dep')
-gmock_dep = gtest_proj.get_variable('gmock_main_dep')
-if not gtest_dep.found()
-    error('MESON_SKIP_TEST: gtest not installed.')
+if build_tests
+    # GTest and GMock
+    gtest_proj = subproject('gtest')
+    gtest_dep = gtest_proj.get_variable('gtest_main_dep')
+    gmock_dep = gtest_proj.get_variable('gmock_main_dep')
+    if not gtest_dep.found()
+        error('MESON_SKIP_TEST: gtest not installed.')
+    endif
+
+    subdir('tests')
+    message('Tests enabled (buildtype=' + get_option('buildtype') + ')')
+else
+    message('Tests disabled (use debug build or -Dbuild_tests=true to enable)')
 endif
-
-subdir('tests')

meson_options.txt

@@ -2,3 +2,8 @@ option('usb_trace_only',
   type: 'boolean',
   value: false,
   description: 'Enable USB trace mode: log USB data without sending to device (saves label tape during debugging)')
+
+option('build_tests',
+  type: 'boolean',
+  value: false,
+  description: 'Build unit tests (automatically enabled for debug builds)')

scripts/build.sh

@@ -0,0 +1,162 @@
+#!/bin/bash
+
+# Build script for ptprnt - simplifies common build configurations
+# Usage: ./scripts/build.sh [release|debug|clean] [options]
+
+set -e
+
+SCRIPT_PATH="$( cd -- "$(dirname "$0")" >/dev/null 2>&1 ; pwd -P )"
+PROJECT_ROOT="${SCRIPT_PATH}/.."
+
+# Color output
+RED='\033[0;31m'
+GREEN='\033[0;32m'
+YELLOW='\033[1;33m'
+BLUE='\033[0;34m'
+NC='\033[0m' # No Color
+
+print_usage() {
+    echo "Usage: $0 [build-type] [options]"
+    echo ""
+    echo "Build Types:"
+    echo "  release    Build optimized release version (default)"
+    echo "  debug      Build debug version with symbols"
+    echo "  clean      Clean build directories"
+    echo ""
+    echo "Options:"
+    echo "  --coverage Enable coverage reporting (debug builds only)"
+    echo "  --reconfigure  Force reconfiguration"
+    echo "  --test     Run tests after building"
+    echo "  -j N       Use N parallel jobs (default: auto)"
+    echo ""
+    echo "Examples:"
+    echo "  $0                    # Build release"
+    echo "  $0 debug --test       # Build debug and run tests"
+    echo "  $0 debug --coverage   # Build debug with coverage"
+    echo "  $0 clean              # Clean all build directories"
+}
+
+# Default values
+BUILD_TYPE="release"
+BUILDDIR="builddir"
+COVERAGE=false
+RECONFIGURE=false
+RUN_TESTS=false
+JOBS=""
+
+# Parse arguments
+while [[ $# -gt 0 ]]; do
+    case $1 in
+        release|debug|clean)
+            BUILD_TYPE="$1"
+            shift
+            ;;
+        --coverage)
+            COVERAGE=true
+            shift
+            ;;
+        --reconfigure)
+            RECONFIGURE=true
+            shift
+            ;;
+        --test)
+            RUN_TESTS=true
+            shift
+            ;;
+        -j)
+            JOBS="-j $2"
+            shift 2
+            ;;
+        -h|--help)
+            print_usage
+            exit 0
+            ;;
+        *)
+            echo -e "${RED}Error: Unknown option: $1${NC}"
+            print_usage
+            exit 1
+            ;;
+    esac
+done
+
+cd "${PROJECT_ROOT}"
+
+# Handle clean
+if [[ "${BUILD_TYPE}" == "clean" ]]; then
+    echo -e "${YELLOW}Cleaning build directories...${NC}"
+    rm -rf builddir builddir-debug
+    echo -e "${GREEN}Clean complete!${NC}"
+    exit 0
+fi
+
+# Set build directory and options based on build type
+if [[ "${BUILD_TYPE}" == "debug" ]]; then
+    BUILDDIR="builddir-debug"
+    MESON_OPTS="--buildtype=debug"
+
+    if [[ "${COVERAGE}" == true ]]; then
+        MESON_OPTS="${MESON_OPTS} -Db_coverage=true"
+        echo -e "${BLUE}Building debug with coverage enabled${NC}"
+    else
+        echo -e "${BLUE}Building debug version${NC}"
+    fi
+else
+    BUILDDIR="builddir"
+    MESON_OPTS="--buildtype=release"
+
+    if [[ "${COVERAGE}" == true ]]; then
+        echo -e "${YELLOW}Warning: Coverage is only supported for debug builds, ignoring --coverage${NC}"
+    fi
+
+    if [[ "${RUN_TESTS}" == true ]]; then
+        echo -e "${YELLOW}Warning: Tests are not built for release builds (use debug build for testing)${NC}"
+        RUN_TESTS=false
+    fi
+
+    echo -e "${BLUE}Building release version (tests disabled)${NC}"
+fi
+
+# Setup or reconfigure build directory
+if [[ ! -d "${BUILDDIR}" ]] || [[ "${RECONFIGURE}" == true ]]; then
+    if [[ "${RECONFIGURE}" == true ]]; then
+        echo -e "${YELLOW}Reconfiguring build...${NC}"
+        meson setup "${BUILDDIR}" ${MESON_OPTS} --wipe --reconfigure
+    else
+        echo -e "${YELLOW}Setting up build directory...${NC}"
+        meson setup "${BUILDDIR}" ${MESON_OPTS}
+    fi
+fi
+
+# Build
+echo -e "${YELLOW}Building...${NC}"
+ninja -C "${BUILDDIR}" ${JOBS}
+
+if [[ $? -eq 0 ]]; then
+    echo -e "${GREEN}Build successful!${NC}"
+    echo -e "Binary: ${BUILDDIR}/ptprnt"
+else
+    echo -e "${RED}Build failed!${NC}"
+    exit 1
+fi
+
+# Run tests if requested
+if [[ "${RUN_TESTS}" == true ]]; then
+    echo -e "${YELLOW}Running tests...${NC}"
+    ninja -C "${BUILDDIR}" test
+
+    if [[ $? -eq 0 ]]; then
+        echo -e "${GREEN}All tests passed!${NC}"
+    else
+        echo -e "${RED}Tests failed!${NC}"
+        exit 1
+    fi
+fi
+
+# Show binary info
+echo ""
+echo -e "${BLUE}Build Information:${NC}"
+echo "  Build type: ${BUILD_TYPE}"
+echo "  Build dir:  ${BUILDDIR}"
+echo "  Binary:     $(ls -lh ${BUILDDIR}/ptprnt | awk '{print $5, $9}')"
+echo ""
+echo -e "${GREEN}Done!${NC}"

scripts/generate_coverage.sh

@@ -0,0 +1,195 @@
+#!/bin/bash
+
+# Coverage report generator for ptprnt
+# Usage: ./scripts/generate_coverage.sh [options]
+
+set -e
+
+SCRIPT_PATH="$( cd -- "$(dirname "$0")" >/dev/null 2>&1 ; pwd -P )"
+PROJECT_ROOT="${SCRIPT_PATH}/.."
+
+# Output paths
+HTML_COV_PATH="coverageReport/html"
+XML_COV_PATH="coverageReport/xml"
+TEXT_COV_PATH="coverageReport"
+HTML_START_FILE="index.html"
+
+# Color output
+RED='\033[0;31m'
+GREEN='\033[0;32m'
+YELLOW='\033[1;33m'
+BLUE='\033[0;34m'
+NC='\033[0m' # No Color
+
+# Default values - all formats enabled by default
+GENERATE_HTML=false
+GENERATE_XML=false
+GENERATE_TEXT=false
+BUILDDIR="builddir-debug"
+
+# Common gcovr options
+GCOVR_OPTS="--filter src --root ."
+
+print_usage() {
+    echo "Usage: $0 [options]"
+    echo ""
+    echo "Coverage Report Generator - generates coverage reports from existing coverage data"
+    echo ""
+    echo "Prerequisites:"
+    echo "  Build with coverage enabled first:"
+    echo "    ./scripts/build.sh debug --coverage --test"
+    echo ""
+    echo "Format Options (if none specified, all formats are generated):"
+    echo "  --html         Generate HTML coverage report"
+    echo "  --xml          Generate XML coverage report (for CI/CD)"
+    echo "  --text         Generate text coverage report (terminal output)"
+    echo ""
+    echo "Build Options:"
+    echo "  --builddir DIR Use custom build directory (default: builddir-debug)"
+    echo ""
+    echo "Other Options:"
+    echo "  -h, --help     Show this help message"
+    echo ""
+    echo "Examples:"
+    echo "  $0                        # Generate all formats (html, xml, text)"
+    echo "  $0 --html                 # Generate only HTML report"
+    echo "  $0 --html --text          # Generate HTML and text reports"
+    echo "  $0 --xml                  # Generate XML for CI/CD"
+    echo "  $0 --builddir builddir    # Use release build directory"
+}
+
+# Parse arguments
+# If no format arguments provided, enable all
+if [[ $# -eq 0 ]]; then
+    GENERATE_HTML=true
+    GENERATE_XML=true
+    GENERATE_TEXT=true
+fi
+
+while [[ $# -gt 0 ]]; do
+    case $1 in
+        --html)
+            GENERATE_HTML=true
+            shift
+            ;;
+        --xml)
+            GENERATE_XML=true
+            shift
+            ;;
+        --text)
+            GENERATE_TEXT=true
+            shift
+            ;;
+        --builddir)
+            BUILDDIR="$2"
+            shift 2
+            ;;
+        -h|--help)
+            print_usage
+            exit 0
+            ;;
+        *)
+            echo -e "${RED}Error: Unknown option: $1${NC}"
+            print_usage
+            exit 1
+            ;;
+    esac
+done
+
+# Check if any format was selected when arguments were provided
+if [[ $GENERATE_HTML == false && $GENERATE_XML == false && $GENERATE_TEXT == false ]]; then
+    echo -e "${RED}Error: No output format specified. Use --html, --xml, and/or --text${NC}"
+    print_usage
+    exit 1
+fi
+
+cd "${PROJECT_ROOT}"
+
+# Check if build directory exists
+if [[ ! -d "${BUILDDIR}" ]]; then
+    echo -e "${RED}Error: Build directory '${BUILDDIR}' does not exist${NC}"
+    echo ""
+    echo "Build with coverage enabled first:"
+    echo "  ./scripts/build.sh debug --coverage --test"
+    exit 1
+fi
+
+# Check if coverage data exists by looking for .gcda files
+if ! find "${BUILDDIR}" -name "*.gcda" -print -quit | grep -q .; then
+    echo -e "${RED}Error: No coverage data found in '${BUILDDIR}'${NC}"
+    echo ""
+    echo "Make sure you built with coverage enabled and ran the tests:"
+    echo "  ./scripts/build.sh debug --coverage --test"
+    exit 1
+fi
+
+echo -e "${BLUE}Generating Coverage report for ptprnt${NC}"
+echo "Build directory: ${BUILDDIR}"
+echo "Formats: $(${GENERATE_HTML} && echo -n "html ")$(${GENERATE_XML} && echo -n "xml ")$(${GENERATE_TEXT} && echo -n "text")"
+echo ""
+
+# Check if gcovr is available
+if ! command -v gcovr &> /dev/null; then
+    echo -e "${RED}Error: gcovr is not installed${NC}"
+    exit 1
+fi
+
+if [[ "${GENERATE_HTML}" == true ]]; then
+    echo -e "${YELLOW}Generating HTML coverage report...${NC}"
+    mkdir -p "${HTML_COV_PATH}"
+    gcovr ${GCOVR_OPTS} \
+        --html --html-details --html-syntax-highlighting \
+        --output "${HTML_COV_PATH}/${HTML_START_FILE}"
+
+    if [[ $? -eq 0 ]]; then
+        echo -e "${GREEN}✓ HTML report generated${NC}"
+        echo ""
+        echo -e "${BLUE}To view HTML report, open:${NC}"
+        echo "  file://${SCRIPT_PATH}/../${HTML_COV_PATH}/${HTML_START_FILE}"
+
+    else
+        echo -e "${RED}✗ HTML report failed${NC}"
+    fi
+fi
+
+if [[ "${GENERATE_XML}" == true ]]; then
+    echo -e "${YELLOW}Generating XML coverage report...${NC}"
+    mkdir -p "${XML_COV_PATH}"
+    gcovr ${GCOVR_OPTS} \
+        --xml-pretty \
+        --output "${XML_COV_PATH}/cov.xml"
+
+    if [[ $? -eq 0 ]]; then
+        echo -e "${GREEN}✓ XML report generated${NC}"
+          echo ""
+        echo -e "${BLUE}To view XML report, open:${NC}"
+        echo "  file://${SCRIPT_PATH}/../${XML_COV_PATH}/cov.xml"
+    else
+        echo -e "${RED}✗ XML report failed${NC}"
+    fi
+fi
+
+if [[ "${GENERATE_TEXT}" == true ]]; then
+    echo -e "${YELLOW}Generating text coverage report...${NC}"
+    mkdir -p "${TEXT_COV_PATH}"
+
+    # Save to file
+    gcovr ${GCOVR_OPTS} --output "${TEXT_COV_PATH}/coverage.txt"
+
+    if [[ $? -eq 0 ]]; then
+        echo -e "${GREEN}✓ Text report generated${NC}"
+        echo ""
+        echo -e "${BLUE}To view TXT report, open:${NC}"
+        echo "file://${SCRIPT_PATH}/../${TEXT_COV_PATH}/coverage.txt"
+    else
+        echo -e "${RED}✗ Text report failed${NC}"
+    fi
+fi
+
+# Clean up gcov files
+rm -f *.gcov 2>/dev/null
+
+# Summary
+echo ""
+echo -e "${GREEN}Coverage reports generated successfully!${NC}"
+echo ""

src/PtouchPrint.cpp

@@ -18,7 +18,8 @@
  */
 #include "PtouchPrint.hpp"
 
-#include <fmt/core.h>
+#include <format>
+#include <iostream>
 #include <spdlog/sinks/basic_file_sink.h>
 #include <spdlog/sinks/stdout_color_sinks.h>
 #include <spdlog/spdlog.h>
@@ -104,11 +105,11 @@ bool PtouchPrint::handleListDrivers() {
     auto driverFactory = std::make_unique<PrinterDriverFactory>();
     auto drivers       = driverFactory->listAllDrivers();
 
-    fmt::print("Available printer drivers:\n");
+    std::cout << "Available printer drivers:\n";
     for (const auto& driver : drivers) {
-        fmt::print("  - {}\n", driver);
+        std::cout << std::format("  - {}\n", driver);
     }
-    fmt::print("\nUse with: -p <driver_name> or --printer <driver_name>\n");
+    std::cout << "\nUse with: -p <driver_name> or --printer <driver_name>\n";
     return true;
 }
 

src/cli/CliParser.cpp

@@ -19,7 +19,8 @@
 
 #include "CliParser.hpp"
 
-#include <fmt/core.h>
+#include <format>
+#include <iostream>
 
 namespace ptprnt::cli {
 
@@ -92,7 +93,7 @@ void CliParser::reorderCommandsByArgv(int argc, char** argv) {
 void CliParser::setupParser() {
     // Version callback
     auto printVersion = [this](std::size_t) {
-        fmt::print("ptprnt version: {}\n", mVersionString);
+        std::cout << std::format("ptprnt version: {}\n", mVersionString);
         throw CLI::CallForVersion();
     };
 

src/graphics/Label.cpp

@@ -25,6 +25,7 @@
 #include <cassert>
 #include <cstddef>
 #include <cstdint>
+#include <cstring>
 #include <memory>
 #include <string>
 #include <vector>
@@ -274,7 +275,7 @@ bool Label::append(const ILabel& other, uint32_t spacingPx) {
     int newStride          = mCairoWrapper->cairo_image_surface_get_stride(newSurface.get());
 
     // Clear the new surface (set to transparent/white)
-    std::memset(newData, 0x00, newStride * height);
+    memset(newData, 0x00, newStride * height);
 
     // Copy current label data
     for (int y = 0; y < height; ++y) {

src/printers/P700Printer.cpp

@@ -90,6 +90,11 @@ libusbwrap::usbId P700Printer::getUsbId() {
 }
 
 bool P700Printer::attachUsbDevice(std::shared_ptr<libusbwrap::IUsbDevice> usbHndl) {
+    if (!usbHndl) {
+        spdlog::error("Cannot attach null USB device");
+        return false;
+    }
+
     if (!usbHndl->open()) {
         spdlog::error("Unable to open USB device: {}", usbHndl->getLastErrorString());
         return false;
@@ -182,6 +187,11 @@ bool P700Printer::printMonochromeData(const graphics::MonochromeData& data) {
 }
 
 bool P700Printer::printLabel(std::unique_ptr<graphics::ILabel> label) {
+    if (!label) {
+        spdlog::error("Cannot print null label");
+        return false;
+    }
+
     // Convert label directly to MonochromeData
     // getRaw() returns data in Cairo surface coordinates matching getWidth() × getHeight()
     auto pixels = label->getRaw();
@@ -200,9 +210,15 @@ bool P700Printer::printLabel(std::unique_ptr<graphics::ILabel> label) {
 }
 
 bool P700Printer::print() {
-    send(p700::commands::LF);
-    send(p700::commands::FF);
-    send(p700::commands::EJECT);
+    if (!send(p700::commands::LF)) {
+        return false;
+    }
+    if (!send(p700::commands::FF)) {
+        return false;
+    }
+    if (!send(p700::commands::EJECT)) {
+        return false;
+    }
     return true;
 }
 

subprojects/spdlog.wrap

@@ -0,0 +1,13 @@
+[wrap-file]
+directory = spdlog-1.15.3
+source_url = https://github.com/gabime/spdlog/archive/refs/tags/v1.15.3.tar.gz
+source_filename = spdlog-1.15.3.tar.gz
+source_hash = 15a04e69c222eb6c01094b5c7ff8a249b36bb22788d72519646fb85feb267e67
+source_fallback_url = https://github.com/mesonbuild/wrapdb/releases/download/spdlog_1.15.3-5/spdlog-1.15.3.tar.gz
+patch_filename = spdlog_1.15.3-5_patch.zip
+patch_url = https://wrapdb.mesonbuild.com/v2/spdlog_1.15.3-5/get_patch
+patch_hash = 5e0eaf0002ff589cd8dac58e1b38c297422e7a0404d7d47ff0d2e285ed18169c
+wrapdb_version = 1.15.3-5
+
+[provide]
+dependency_names = spdlog

tests/label_test/label_test.cpp

@@ -25,8 +25,8 @@
 #include <memory>
 #include <vector>
 
-#include "../../tests/mocks/MockCairoWrapper.hpp"
 #include "graphics/interface/ILabel.hpp"
+#include "mocks/MockCairoWrapper.hpp"
 
 using ::testing::_;
 using ::testing::DoAll;

tests/meson.build

@@ -1,51 +1,43 @@
-tests = [
-    [
-        'bitmap_test',
-        'bitmap_test_exe',
-        ['../src/graphics/Bitmap.cpp', 'bitmap_test/bitmap_test.cpp'],
-    ],
-    [
-        'monochrome_test',
-        'monochrome_test_exe',
-        [
-            '../src/graphics/Monochrome.cpp',
-            'monochrome_test/monochrome_test.cpp',
-        ],
-    ],
+# Consolidated test binary - all tests in one executable for faster linking
+
+test_sources = [
+    # Test files
+    'bitmap_test/bitmap_test.cpp',
+    'monochrome_test/monochrome_test.cpp',
+    'label_test/label_test.cpp',
+    'printer_service_test/printer_service_test.cpp',
+    'p700_printer_test/p700_printer_test.cpp',
+
+    # Source files under test - graphics
+    '../src/graphics/Bitmap.cpp',
+    '../src/graphics/Monochrome.cpp',
+    '../src/graphics/Label.cpp',
+
+    # Source files under test - core
+    '../src/core/PrinterService.cpp',
+    '../src/core/PrinterDriverFactory.cpp',
+
+    # Source files under test - printers
+    '../src/printers/P700Printer.cpp',
+    '../src/printers/FakePrinter.cpp',
+
+    # Source files under test - USB
+    '../src/libusbwrap/UsbDevice.cpp',
+    '../src/libusbwrap/UsbDeviceFactory.cpp',
 ]
 
-foreach test : tests
-    test(
-        test.get(0),
-        executable(
-            test.get(1),
-            sources: test.get(2),
-            include_directories: incdir,
-            dependencies: [
-                gtest_dep,
-                usb_dep,
-                log_dep,
-                pangocairo_dep,
-                cli11_dep,
-            ],
-        ),
-    )
-endforeach
-
-# Label test requires GMock for mocking Cairo/Pango
-test(
-    'label_test',
-    executable(
-        'label_test_exe',
-        sources: ['../src/graphics/Label.cpp', 'label_test/label_test.cpp'],
-        include_directories: incdir,
-        dependencies: [
-            gmock_dep,
-            gtest_dep,
-            usb_dep,
-            log_dep,
-            pangocairo_dep,
-            cli11_dep,
-        ],
-    ),
+test_exe = executable(
+    'ptprnt_tests',
+    sources: test_sources,
+    include_directories: incdir,
+    dependencies: [
+        gmock_dep,  # GMock includes GTest
+        usb_dep,
+        log_dep,
+        pangocairo_dep,
+        cli11_dep,
+    ],
 )
+
+# Single test that runs all test suites
+test('all_tests', test_exe)

tests/mocks/MockPrinterDriver.hpp

@@ -0,0 +1,50 @@
+/*
+    ptrnt - print labels on linux
+    Copyright (C) 2025  Moritz Martinius
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+ */
+
+#pragma once
+
+#include <gmock/gmock.h>
+
+#include "printers/interface/IPrinterDriver.hpp"
+
+namespace ptprnt {
+
+/**
+ * @brief GMock implementation of IPrinterDriver for unit testing
+ *
+ * This mock allows tests to verify printer interactions without
+ * requiring actual printer hardware.
+ */
+class MockPrinterDriver : public IPrinterDriver {
+   public:
+    MOCK_METHOD(std::string_view, getDriverName, (), (override));
+    MOCK_METHOD(std::string_view, getName, (), (override));
+    MOCK_METHOD(std::string_view, getVersion, (), (override));
+    MOCK_METHOD(libusbwrap::usbId, getUsbId, (), (override));
+    MOCK_METHOD(PrinterInfo, getPrinterInfo, (), (override));
+    MOCK_METHOD(PrinterStatus, getPrinterStatus, (), (override));
+    MOCK_METHOD(bool, attachUsbDevice, (std::shared_ptr<libusbwrap::IUsbDevice> usbHndl), (override));
+    MOCK_METHOD(bool, detachUsbDevice, (), (override));
+    MOCK_METHOD(bool, printBitmap, (const graphics::Bitmap<graphics::ALPHA8>& bitmap), (override));
+    MOCK_METHOD(bool, printMonochromeData, (const graphics::MonochromeData& data), (override));
+    MOCK_METHOD(bool, printLabel, (const std::unique_ptr<graphics::ILabel> label), (override));
+    MOCK_METHOD(bool, print, (), (override));
+};
+
+}  // namespace ptprnt

tests/mocks/MockUsbDevice.hpp

@@ -0,0 +1,57 @@
+/*
+    ptrnt - print labels on linux
+    Copyright (C) 2025  Moritz Martinius
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+ */
+
+#pragma once
+
+#include <gmock/gmock.h>
+
+#include "libusbwrap/interface/IUsbDevice.hpp"
+
+namespace libusbwrap {
+
+/**
+ * @brief GMock implementation of IUsbDevice for unit testing
+ *
+ * This mock allows tests to verify USB device interactions without
+ * requiring actual hardware or libusb context.
+ */
+class MockUsbDevice : public IUsbDevice {
+   public:
+    MOCK_METHOD(bool, open, (), (override));
+    MOCK_METHOD(void, close, (), (override));
+
+    // libusb wrappers
+    MOCK_METHOD(bool, detachKernelDriver, (int interfaceNo), (override));
+    MOCK_METHOD(bool, claimInterface, (int interfaceNo), (override));
+    MOCK_METHOD(bool, releaseInterface, (int interfaceNo), (override));
+    MOCK_METHOD(bool, bulkTransfer,
+                (uint8_t endpoint, const std::vector<uint8_t>& data, int* tx, unsigned int timeout), (override));
+
+    // getters
+    MOCK_METHOD(const usbId, getUsbId, (), (override));
+    MOCK_METHOD(const device::Speed, getSpeed, (), (override));
+    MOCK_METHOD(const uint8_t, getBusNumber, (), (override));
+    MOCK_METHOD(const uint8_t, getPortNumber, (), (override));
+
+    // errors
+    MOCK_METHOD(const Error, getLastError, (), (override));
+    MOCK_METHOD(const std::string, getLastErrorString, (), (override));
+};
+
+}  // namespace libusbwrap

tests/mocks/MockUsbDeviceFactory.hpp

@@ -0,0 +1,40 @@
+/*
+    ptrnt - print labels on linux
+    Copyright (C) 2025  Moritz Martinius
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+ */
+
+#pragma once
+
+#include <gmock/gmock.h>
+
+#include "libusbwrap/interface/IUsbDeviceFactory.hpp"
+
+namespace libusbwrap {
+
+/**
+ * @brief GMock implementation of IUsbDeviceFactory for unit testing
+ *
+ * This mock allows tests to control USB device discovery without
+ * requiring actual libusb context or hardware.
+ */
+class MockUsbDeviceFactory : public IUsbDeviceFactory {
+   public:
+    MOCK_METHOD(std::vector<std::unique_ptr<IUsbDevice>>, findAllDevices, (), (override));
+    MOCK_METHOD(std::vector<std::unique_ptr<IUsbDevice>>, findDevices, (uint16_t vid, uint16_t pid), (override));
+};
+
+}  // namespace libusbwrap

tests/monochrome_test/monochrome_test.cpp

@@ -57,9 +57,6 @@ TEST(basic_test, Monochrome_convertWithCustomThreshhold_yieldsMonochromeRespecti
 }
 
 TEST(basic_test, Monochrome_convertNonAlignedPixels_spillsOverIntoNewByte) {
-    // TODO: We need to find to access the vector without the possiblity of out-of-bounds access
-    // Ideas: constexpr? compile time check?
-    GTEST_SKIP() << "Skipping this test, as ASAN will halt as this is an out-of-bounds access";
     const std::vector<uint8_t> pixels(
         {0xFF, 0x00, 0xFF, 0x00, 0xFF, 0x00, 0xFF, 0x00, 0xFF, 0x00, 0xFF, 0x00, 0xFF, 0x00, 0xFF, 0x00, 0xFF});
 

tests/p700_printer_test/p700_printer_test.cpp

@@ -0,0 +1,169 @@
+/*
+    ptrnt - print labels on linux
+    Copyright (C) 2025  Moritz Martinius
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+ */
+
+#include <gmock/gmock.h>
+#include <gtest/gtest.h>
+
+#include <memory>
+
+#include "graphics/Bitmap.hpp"
+#include "graphics/Monochrome.hpp"
+#include "mocks/MockUsbDevice.hpp"
+#include "printers/P700Printer.hpp"
+
+using ::testing::_;
+using ::testing::DoAll;
+using ::testing::NiceMock;
+using ::testing::Return;
+using ::testing::SetArgPointee;
+
+namespace ptprnt::printer {
+
+// Test fixture for P700Printer tests
+class P700PrinterTest : public ::testing::Test {
+   protected:
+    void SetUp() override {
+        printer    = std::make_unique<P700Printer>();
+        mockUsbDev = std::make_shared<NiceMock<libusbwrap::MockUsbDevice>>();
+
+        // Default mock behaviors
+        ON_CALL(*mockUsbDev, open()).WillByDefault(Return(true));
+        ON_CALL(*mockUsbDev, close()).WillByDefault(Return());
+        ON_CALL(*mockUsbDev, detachKernelDriver(_)).WillByDefault(Return(true));
+        ON_CALL(*mockUsbDev, claimInterface(_)).WillByDefault(Return(true));
+        ON_CALL(*mockUsbDev, releaseInterface(_)).WillByDefault(Return(true));
+        ON_CALL(*mockUsbDev, bulkTransfer(_, _, _, _)).WillByDefault(Return(true));
+        ON_CALL(*mockUsbDev, getUsbId()).WillByDefault(Return(libusbwrap::usbId{0x04f9, 0x2061}));
+    }
+
+    void TearDown() override { printer.reset(); }
+
+    std::unique_ptr<P700Printer> printer;
+    std::shared_ptr<libusbwrap::MockUsbDevice> mockUsbDev;
+};
+
+// Test: Get printer driver name
+TEST_F(P700PrinterTest, GetDriverName) {
+    EXPECT_EQ(printer->getDriverName(), "P700");
+}
+
+// Test: Get printer name
+TEST_F(P700PrinterTest, GetName) {
+    auto name = printer->getName();
+    EXPECT_FALSE(name.empty());
+}
+
+// Test: Get USB ID
+TEST_F(P700PrinterTest, GetUsbId) {
+    auto usbId = printer->getUsbId();
+    EXPECT_EQ(usbId.first, 0x04f9);   // Brother VID
+    EXPECT_EQ(usbId.second, 0x2061);  // P700 PID
+}
+
+// Test: Get printer version
+TEST_F(P700PrinterTest, GetVersion) {
+    auto version = printer->getVersion();
+    EXPECT_FALSE(version.empty());
+}
+
+// Test: Get printer info
+TEST_F(P700PrinterTest, GetPrinterInfo) {
+    auto info = printer->getPrinterInfo();
+    EXPECT_EQ(info.pixelLines, 128);
+    EXPECT_FALSE(info.name.empty());
+}
+
+// Test: Attach USB device
+TEST_F(P700PrinterTest, AttachUsbDevice) {
+    bool result = printer->attachUsbDevice(mockUsbDev);
+
+    EXPECT_TRUE(result);
+}
+
+// Test: Attach USB device with null pointer
+TEST_F(P700PrinterTest, AttachNullUsbDevice) {
+    bool result = printer->attachUsbDevice(nullptr);
+
+    EXPECT_FALSE(result);
+}
+
+// Test: Detach USB device
+TEST_F(P700PrinterTest, DetachUsbDevice) {
+    printer->attachUsbDevice(mockUsbDev);
+
+    bool result = printer->detachUsbDevice();
+
+    EXPECT_TRUE(result);
+}
+
+// Test: Detach when no device attached
+TEST_F(P700PrinterTest, DetachNoDevice) {
+    bool result = printer->detachUsbDevice();
+
+    // Production code returns true when no device is attached (just logs warning)
+    EXPECT_TRUE(result);
+}
+
+// Test: Get printer status without device
+TEST_F(P700PrinterTest, GetStatusNoDevice) {
+    auto status = printer->getPrinterStatus();
+
+    EXPECT_EQ(status.tapeWidthPixel, 0);  // Should be 0 when no device
+}
+
+// Test: Print without attached device
+TEST_F(P700PrinterTest, PrintWithoutDevice) {
+    bool result = printer->print();
+
+    // Should fail when no device is attached
+    EXPECT_FALSE(result);
+}
+
+// Test: Print bitmap without device
+TEST_F(P700PrinterTest, PrintBitmapWithoutDevice) {
+    graphics::Bitmap<graphics::ALPHA8> bitmap(10, 10);
+
+    bool result = printer->printBitmap(bitmap);
+
+    EXPECT_FALSE(result);
+}
+
+// Test: Print monochrome data without device
+TEST_F(P700PrinterTest, PrintMonochromeDataWithoutDevice) {
+    graphics::MonochromeData data;
+    data.width  = 10;
+    data.height = 10;
+    data.bytes  = std::vector<uint8_t>(20, 0xFF);
+    data.stride = 2;
+
+    bool result = printer->printMonochromeData(data);
+
+    EXPECT_FALSE(result);
+}
+
+// Test: Print label with null pointer
+TEST_F(P700PrinterTest, PrintNullLabel) {
+    std::unique_ptr<graphics::ILabel> label = nullptr;
+
+    bool result = printer->printLabel(std::move(label));
+
+    EXPECT_FALSE(result);
+}
+
+}  // namespace ptprnt::printer

tests/printer_service_test/printer_service_test.cpp

@@ -0,0 +1,114 @@
+/*
+    ptrnt - print labels on linux
+    Copyright (C) 2025  Moritz Martinius
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+ */
+
+#include <gmock/gmock.h>
+#include <gtest/gtest.h>
+
+#include <memory>
+#include <vector>
+
+#include "core/PrinterDriverFactory.hpp"
+#include "core/PrinterService.hpp"
+
+using ::testing::_;
+using ::testing::NiceMock;
+using ::testing::Return;
+
+namespace ptprnt::core {
+
+// Test fixture for PrinterService tests
+class PrinterServiceTest : public ::testing::Test {
+   protected:
+    void SetUp() override {
+        // Service under test
+        service = std::make_unique<PrinterService>();
+    }
+
+    void TearDown() override { service.reset(); }
+
+    std::unique_ptr<PrinterService> service;
+};
+
+// Test: PrinterService initialization
+TEST_F(PrinterServiceTest, InitializeSuccess) {
+    // PrinterService::initialize() calls UsbDeviceFactory::init()
+    // This will attempt to initialize libusb - we can't easily mock this
+    // without dependency injection, but we can test the call succeeds
+    // when libusb is available
+    EXPECT_TRUE(service->initialize());
+}
+
+// Test: Detect printers when none are connected
+TEST_F(PrinterServiceTest, DetectPrintersNoneFound) {
+    service->initialize();
+
+    auto printers = service->detectPrinters();
+
+    // With no compatible USB devices, we should get an empty list
+    // (This depends on actual USB devices present, so it might find real hardware)
+    // In a real test environment without hardware, this should be empty
+    EXPECT_GE(printers.size(), 0);  // Non-negative count
+}
+
+// Test: Select printer with auto-detect
+TEST_F(PrinterServiceTest, SelectPrinterAuto) {
+    service->initialize();
+    service->detectPrinters();
+
+    auto printer = service->selectPrinter("auto");
+
+    // This will be nullptr if no printers detected
+    // In test environment without hardware, expect nullptr
+    // (Test passes either way - just exercises the code path)
+    if (printer != nullptr) {
+        EXPECT_NE(printer, nullptr);
+        EXPECT_EQ(service->getCurrentPrinter(), printer);
+    } else {
+        EXPECT_EQ(printer, nullptr);
+    }
+}
+
+// Test: Select non-existent printer
+TEST_F(PrinterServiceTest, SelectPrinterNotFound) {
+    service->initialize();
+    service->detectPrinters();
+
+    auto printer = service->selectPrinter("NonExistentPrinter");
+
+    EXPECT_EQ(printer, nullptr);
+    EXPECT_EQ(service->getCurrentPrinter(), nullptr);
+}
+
+// Test: Get current printer when none selected
+TEST_F(PrinterServiceTest, GetCurrentPrinterNoneSelected) {
+    EXPECT_EQ(service->getCurrentPrinter(), nullptr);
+}
+
+// Test: Print label without selecting printer
+TEST_F(PrinterServiceTest, PrintLabelNoPrinterSelected) {
+    // Create a simple label (we need a valid ILabel pointer)
+    std::unique_ptr<graphics::ILabel> label = nullptr;  // nullptr label for this test
+
+    bool result = service->printLabel(std::move(label));
+
+    // Should fail because no printer is selected
+    EXPECT_FALSE(result);
+}
+
+}  // namespace ptprnt::core