Add support for absolute paths for jacoco exec and report

test-framework/jacoco/deployment/src/main/java/io/quarkus/jacoco/deployment/JacocoProcessor.java

@@ -7,6 +7,7 @@
 import java.nio.file.Paths;
 import java.util.Collections;
 import java.util.HashSet;
+import java.util.Optional;
 import java.util.Set;
 import java.util.function.BiFunction;
 
@@ -35,6 +36,9 @@
 
 public class JacocoProcessor {
 
+    public static final String JACOCO_QUARKUS_EXEC = "jacoco-quarkus.exec";
+    public static final String JACOCO_REPORT = "jacoco-report";
+
     @BuildStep(onlyIf = IsTest.class)
     FeatureBuildItem feature() {
         return new FeatureBuildItem("jacoco");
@@ -53,10 +57,8 @@ void transformerBuildItem(BuildProducer<BytecodeTransformerBuildItem> transforme
             return;
         }
 
-        String dataFile = outputTargetBuildItem.getOutputDirectory().toAbsolutePath().toString() + File.separator
-                + config.dataFile;
-        System.setProperty("jacoco-agent.destfile",
-                dataFile);
+        String dataFile = getFilePath(config.dataFile, outputTargetBuildItem.getOutputDirectory(), JACOCO_QUARKUS_EXEC);
+        System.setProperty("jacoco-agent.destfile", dataFile);
         if (!config.reuseDataFile) {
             Files.deleteIfExists(Paths.get(dataFile));
         }
@@ -95,8 +97,7 @@ public byte[] apply(String className, byte[] bytes) {
             info.dataFile = dataFile;
 
             File targetdir = new File(
-                    outputTargetBuildItem.getOutputDirectory().toAbsolutePath().toString() + File.separator
-                            + config.reportLocation);
+                    getFilePath(config.reportLocation, outputTargetBuildItem.getOutputDirectory(), JACOCO_REPORT));
             info.reportDir = targetdir.getAbsolutePath();
             String includes = String.join(",", config.includes);
             String excludes = String.join(",", config.excludes.orElse(Collections.emptyList()));
@@ -122,7 +123,8 @@ public byte[] apply(String className, byte[] bytes) {
 
     private void addProjectModule(ResolvedDependency module, JacocoConfig config, ReportInfo info, String includes,
             String excludes, Set<String> classes, Set<String> sources) throws Exception {
-        info.savedData.add(new File(module.getWorkspaceModule().getBuildDir(), config.dataFile).getAbsolutePath());
+        String dataFile = getFilePath(config.dataFile, module.getWorkspaceModule().getBuildDir().toPath(), JACOCO_QUARKUS_EXEC);
+        info.savedData.add(new File(dataFile).getAbsolutePath());
         if (module.getSources() == null) {
             return;
         }
@@ -140,4 +142,8 @@ private void addProjectModule(ResolvedDependency module, JacocoConfig config, Re
             }
         }
     }
+
+    private String getFilePath(Optional<String> path, Path outputDirectory, String defaultRelativePath) {
+        return path.orElse(outputDirectory.toAbsolutePath() + File.separator + defaultRelativePath);
+    }
 }

test-framework/jacoco/runtime/src/main/java/io/quarkus/jacoco/runtime/JacocoConfig.java

@@ -11,10 +11,11 @@
 public class JacocoConfig {
 
     /**
-     * The jacoco data file
+     * The jacoco data file. By default this will be target/jacoco-quarkus.exec.
+     * The path can be relative (to the module) or absolute.
      */
-    @ConfigItem(defaultValue = "jacoco-quarkus.exec")
-    public String dataFile;
+    @ConfigItem
+    public Optional<String> dataFile;
 
     /**
      * Whether to reuse ({@code true}) or delete ({@code false}) the jacoco
@@ -82,8 +83,9 @@ public class JacocoConfig {
     public Optional<List<String>> excludes;
 
     /**
-     * The location of the report files.
+     * The location of the report files. By default this will be target/jacoco-report.
+     * The path can be relative (to the module) or absolute.
      */
-    @ConfigItem(defaultValue = "jacoco-report")
-    public String reportLocation;
+    @ConfigItem
+    public Optional<String> reportLocation;
 }