Add working-directory input for monorepo support

.github/workflows/continuous-integration.yml

@@ -155,6 +155,13 @@ jobs:
       - name: Run Jest
         run: "npm run test"
 
+  shell-testing:
+    runs-on: "ubuntu-latest"
+    steps:
+      - uses: "actions/checkout@v6"
+      - name: Run shell tests
+        run: bash scripts/entrypoint.spec.sh
+
   package-lock-up-to-date:
     runs-on: "ubuntu-latest"
     steps:

README.md

@@ -81,6 +81,30 @@ jobs:
 
 Generally, you will use this as a dependency of a job that uses [laminas/laminas-continuous-integration-action](https://github.com/laminas/laminas-continuous-integration-action), as demonstrated in the above configuration.
 
+### Monorepo Support
+
+For monorepo setups where packages are located in subdirectories, use the `working-directory` input:
+
+```yaml
+jobs:
+  matrix:
+    name: Generate job matrix
+    runs-on: ubuntu-latest
+    outputs:
+      matrix: ${{ steps.matrix.outputs.matrix }}
+    steps:
+      - name: Gather CI configuration
+        id: matrix
+        uses: laminas/laminas-ci-matrix-action@v1
+        with:
+          working-directory: packages/my-package
+```
+
+When `working-directory` is specified:
+- The action looks for `composer.json`, `.laminas-ci.json`, and other configuration files in that directory
+- For pull requests, only files changed within the working directory are considered for selective checks
+- File paths in the diff are relative to the working directory
+
 > ### actions/checkout not required
 >
 > An actions/checkout step prior to this action is not required, as it will perform a checkout into the WORKDIR on its own if none has been performed previously.

action.yml

@@ -3,6 +3,11 @@ description: 'Creates a continuous integration matrix for use with laminas-conti
 branding:
   icon: 'share-2'
   color: 'blue'
+inputs:
+  working-directory:
+    description: 'Working directory for monorepo support. The action will look for composer.json and other configuration files in this directory.'
+    required: false
+    default: '.'
 outputs:
   config:
     description: >-

entrypoint.sh

@@ -69,10 +69,18 @@ git config --global --add safe.directory /github/workspace
 checkout
 
 DIFF=
+WORKING_DIR="${INPUT_WORKING_DIRECTORY:-.}"
+
+# Change to working directory
+if [[ "$WORKING_DIR" != "." ]];then
+    echo "Changing to working directory: ${WORKING_DIR}"
+    cd "${WORKING_DIR}" || { echo "Failed to change to working directory: ${WORKING_DIR}"; exit 1; }
+fi
 
 if [[ "$GITHUB_EVENT_NAME" == "pull_request" ]];then
     echo "Preparing file diff"
-    DIFF=$(git diff --name-only "$GITHUB_BASE_REF"...HEAD)
+    # Use --relative to get paths relative to current working directory
+    DIFF=$(git diff --relative --name-only "$GITHUB_BASE_REF"...HEAD)
 fi
 
 if [[ "$DIFF" != "" ]];then

scripts/entrypoint.spec.sh

@@ -0,0 +1,102 @@
+#!/bin/bash
+# Test script for entrypoint.sh working-directory functionality
+# This tests the git diff --relative behavior with working directories
+
+set -e
+
+# Colors for output
+RED='\033[0;31m'
+GREEN='\033[0;32m'
+NC='\033[0m' # No Color
+
+TESTS_PASSED=0
+TESTS_FAILED=0
+
+# Helper function to run a test
+run_test() {
+    local test_name="$1"
+    local expected="$2"
+    local actual="$3"
+
+    if [[ "$expected" == "$actual" ]]; then
+        echo -e "${GREEN}PASS${NC}: $test_name"
+        TESTS_PASSED=$((TESTS_PASSED + 1))
+    else
+        echo -e "${RED}FAIL${NC}: $test_name"
+        echo "  Expected: $expected"
+        echo "  Actual:   $actual"
+        TESTS_FAILED=$((TESTS_FAILED + 1))
+    fi
+}
+
+# Create a temporary directory for testing
+TEST_DIR=$(mktemp -d)
+trap "rm -rf $TEST_DIR" EXIT
+
+cd "$TEST_DIR"
+
+# Initialize a git repo with a monorepo structure
+git init -q
+git config user.email "test@test.com"
+git config user.name "Test User"
+git config commit.gpgsign false
+
+# Create monorepo structure
+mkdir -p packages/package-a/src
+mkdir -p packages/package-b/src
+echo '{"require":{"php":"^8.1"}}' > packages/package-a/composer.json
+echo '{"require":{"php":"^8.2"}}' > packages/package-b/composer.json
+echo "<?php echo 'A';" > packages/package-a/src/ClassA.php
+echo "<?php echo 'B';" > packages/package-b/src/ClassB.php
+echo "Root file" > root.txt
+
+# Initial commit
+git add .
+git commit -q -m "Initial commit"
+
+# Create a branch and make changes
+git checkout -q -b feature-branch
+
+# Modify files in both packages and root
+echo "<?php echo 'A modified';" > packages/package-a/src/ClassA.php
+echo "<?php echo 'B modified';" > packages/package-b/src/ClassB.php
+echo "Root modified" > root.txt
+git add .
+git commit -q -m "Modify files"
+
+# Test 1: git diff --relative from root shows all files
+DIFF_ROOT=$(git diff --relative --name-only main...HEAD 2>/dev/null || git diff --relative --name-only master...HEAD)
+run_test "git diff from root shows all files" "3" "$(echo "$DIFF_ROOT" | wc -l | tr -d ' ')"
+
+# Test 2: git diff --relative from package-a shows only package-a files
+cd packages/package-a
+DIFF_PKG_A=$(git diff --relative --name-only main...HEAD 2>/dev/null || git diff --relative --name-only master...HEAD)
+run_test "git diff --relative from package-a shows only package-a files" "src/ClassA.php" "$DIFF_PKG_A"
+cd "$TEST_DIR"
+
+# Test 3: git diff --relative from package-b shows only package-b files
+cd packages/package-b
+DIFF_PKG_B=$(git diff --relative --name-only main...HEAD 2>/dev/null || git diff --relative --name-only master...HEAD)
+run_test "git diff --relative from package-b shows only package-b files" "src/ClassB.php" "$DIFF_PKG_B"
+cd "$TEST_DIR"
+
+# Test 4: Verify INPUT_WORKING_DIRECTORY default behavior
+INPUT_WORKING_DIRECTORY=""
+WORKING_DIR="${INPUT_WORKING_DIRECTORY:-.}"
+run_test "Default working directory is '.'" "." "$WORKING_DIR"
+
+# Test 5: Verify INPUT_WORKING_DIRECTORY custom value
+INPUT_WORKING_DIRECTORY="packages/package-a"
+WORKING_DIR="${INPUT_WORKING_DIRECTORY:-.}"
+run_test "Custom working directory is set correctly" "packages/package-a" "$WORKING_DIR"
+
+# Print summary
+echo ""
+echo "================================"
+echo "Tests passed: $TESTS_PASSED"
+echo "Tests failed: $TESTS_FAILED"
+echo "================================"
+
+if [[ $TESTS_FAILED -gt 0 ]]; then
+    exit 1
+fi