Fix dependency-graph with configuration-cache

When state is reused from the configuration cache, no dependencies are resolved.
This fix prevents the action from submitting an empty dependency graph in this case.

.github/workflows/integ-test-dependency-graph.yml

@@ -90,11 +90,15 @@ jobs:
     - id: gradle-build
       run: ./gradlew build
       working-directory: .github/workflow-samples/groovy-dsl
+    - id: gradle-build-again
+      run: ./gradlew build
+      working-directory: .github/workflow-samples/groovy-dsl
     - name: Check generated dependency graphs
       shell: bash
       run: |
         echo "gradle-assemble report file: ${{ steps.gradle-assemble.outputs.dependency-graph-file }}"
         echo "gradle-build report file: ${{ steps.gradle-build.outputs.dependency-graph-file }}"
+        echo "gradle-build-again report file: ${{ steps.gradle-build-again.outputs.dependency-graph-file }}"
         ls -l dependency-graph-reports
         if [ ! -e "${{ steps.gradle-assemble.outputs.dependency-graph-file }}" ]; then
             echo "Did not find gradle-assemble dependency graph file"
@@ -104,3 +108,44 @@ jobs:
             echo "Did not find gradle-build dependency graph files"
             exit 1
         fi
+        if [ ! -e "${{ steps.gradle-build-again.outputs.dependency-graph-file }}" ]; then
+            echo "Did not find gradle-build-again dependency graph files"
+            exit 1
+        fi
+        
+  config-cache:
+    strategy:
+      matrix:
+        os: ${{fromJSON(inputs.runner-os)}}
+    runs-on: ${{ matrix.os }}
+    steps:
+    - name: Checkout sources
+      uses: actions/checkout@v4
+    - name: Download distribution if required
+      uses: ./.github/actions/download-dist
+    - name: Setup Gradle for dependency-graph generate
+      uses: ./
+      with:
+        dependency-graph: generate-and-submit
+    - id: config-cache-store
+      run: ./gradlew assemble --configuration-cache
+      working-directory: .github/workflow-samples/groovy-dsl
+    - name: Check and delete generated dependency graph
+      shell: bash
+      run: |
+        if [ ! -e "${{ steps.config-cache-store.outputs.dependency-graph-file }}" ]; then
+            echo "Did not find config-cache-store dependency graph files"
+            exit 1
+        fi
+        rm ${{ steps.config-cache-store.outputs.dependency-graph-file }}
+    - id: config-cache-reuse
+      run: ./gradlew assemble --configuration-cache
+      working-directory: .github/workflow-samples/groovy-dsl
+    - name: Check no dependency graph is generated
+      shell: bash
+      run: |
+        if [ ! -z "$(ls -A dependency-graph-reports)" ]; then
+            echo "Expected no dependency graph files to be generated"
+            ls -l dependency-graph-reports
+            exit 1
+        fi        

src/resources/init-scripts/gradle-build-action.github-dependency-graph-gradle-plugin-apply.groovy

@@ -9,7 +9,7 @@ buildscript {
     maven { url pluginRepositoryUrl }
   }
   dependencies {
-    classpath "org.gradle:github-dependency-graph-gradle-plugin:1.0.0"
+    classpath "org.gradle:github-dependency-graph-gradle-plugin:1.1.0"
   }
 }
 apply plugin: org.gradle.github.GitHubDependencyGraphPlugin

src/resources/init-scripts/gradle-build-action.github-dependency-graph.init.gradle

@@ -22,11 +22,6 @@ if (isTopLevelBuild) {
     return
   }
 
-  def githubOutput = System.getenv("GITHUB_OUTPUT")
-  if (githubOutput) {
-      new File(githubOutput) << "dependency-graph-file=${reportFile.absolutePath}\n"
-  }
-
   println "Generating dependency graph into '${reportFile}'"
 }
 

test/init-scripts/src/test/groovy/com/gradle/gradlebuildaction/TestDependencyGraph.groovy

@@ -29,7 +29,6 @@ class TestDependencyGraph extends BaseInitScriptTest {
 
         then:
         assert reportFile.exists()
-        assert gitHubOutputFile.text == "dependency-graph-file=${reportFile.absolutePath}\n"
 
         where:
         testGradleVersion << [GRADLE_8_X]
@@ -116,7 +115,6 @@ class TestDependencyGraph extends BaseInitScriptTest {
             GITHUB_DEPENDENCY_GRAPH_SHA: "123456",
             GITHUB_DEPENDENCY_GRAPH_WORKSPACE: testProjectDir.absolutePath,
             DEPENDENCY_GRAPH_REPORT_DIR: reportsDir.absolutePath,
-            GITHUB_OUTPUT: gitHubOutputFile.absolutePath
         ]
     }
 
@@ -127,8 +125,4 @@ class TestDependencyGraph extends BaseInitScriptTest {
     def getReportFile() {
         return new File(reportsDir, "CORRELATOR.json")
     }
-
-    def getGitHubOutputFile() {
-        return new File(testProjectDir, "GITHUB_OUTPUT")
-    }
 }