diff --git a/examples/src/bld/java/com/example/ExamplesBuild.java b/examples/src/bld/java/com/example/ExamplesBuild.java
index 36867b5..4c1af5e 100644
--- a/examples/src/bld/java/com/example/ExamplesBuild.java
+++ b/examples/src/bld/java/com/example/ExamplesBuild.java
@@ -8,6 +8,7 @@ import java.io.IOException;
 import java.util.List;
 
 import static rife.bld.dependencies.Repository.MAVEN_CENTRAL;
+import static rife.bld.dependencies.Repository.MAVEN_LOCAL;
 import static rife.bld.dependencies.Scope.test;
 
 public class ExamplesBuild extends Project {
@@ -16,7 +17,7 @@ public class ExamplesBuild extends Project {
         name = "Examples";
         version = version(0, 1, 0);
 
-        repositories = List.of(MAVEN_CENTRAL);
+        repositories = List.of(MAVEN_LOCAL, MAVEN_CENTRAL);
 
         scope(test)
                 .include(dependency("org.junit.jupiter", "junit-jupiter", version(5, 9, 3)))
@@ -26,13 +27,6 @@ public class ExamplesBuild extends Project {
     public static void main(String[] args) {
         new ExamplesBuild().start(args);
     }
-
-//    @Override
-//    public void test() throws Exception {
-//        super.test();
-//        jacoco();
-//    }
-
     @BuildCommand(summary = "Generates Jacoco Reports")
     public void jacoco() throws IOException {
         new JacocoReportOperation()
diff --git a/src/bld/java/rife/bld/extension/JacocoReportOperationBuild.java b/src/bld/java/rife/bld/extension/JacocoReportOperationBuild.java
index 04a02ca..598bb8d 100644
--- a/src/bld/java/rife/bld/extension/JacocoReportOperationBuild.java
+++ b/src/bld/java/rife/bld/extension/JacocoReportOperationBuild.java
@@ -53,8 +53,6 @@ public class JacocoReportOperationBuild extends Project {
                 .include(dependency("org.junit.platform", "junit-platform-console-standalone", version(1, 10, 0)))
                 .include(dependency("org.assertj:assertj-joda-time:2.2.0"));
 
-        testOperation().mainClass("rife.bld.extension.JacocoReportOperationTest");
-
         javadocOperation()
                 .javadocOptions()
                 .docLint(NO_MISSING)
@@ -62,7 +60,7 @@ public class JacocoReportOperationBuild extends Project {
 
         publishOperation()
                 .repository(version.isSnapshot() ? repository("rife2-snapshot") : repository("rife2"))
-                // .repository(MAVEN_LOCAL)
+//                .repository(MAVEN_LOCAL)
                 .info()
                 .groupId("com.uwyn.rife2")
                 .artifactId("bld-jacoco-report")
@@ -84,7 +82,7 @@ public class JacocoReportOperationBuild extends Project {
     }
 
     @BuildCommand(summary = "Runs PMD analysis")
-    public void pmd() throws Exception {
+    public void pmd() {
         new PmdOperation()
                 .fromProject(this)
                 .failOnViolation(true)
diff --git a/src/main/java/rife/bld/extension/JacocoReportOperation.java b/src/main/java/rife/bld/extension/JacocoReportOperation.java
index 7b209bb..4122100 100644
--- a/src/main/java/rife/bld/extension/JacocoReportOperation.java
+++ b/src/main/java/rife/bld/extension/JacocoReportOperation.java
@@ -142,34 +142,38 @@ public class JacocoReportOperation extends AbstractOperation<JacocoReportOperati
     @Override
     public void execute() throws IOException {
         if ((project == null) && LOGGER.isLoggable(Level.SEVERE)) {
-            LOGGER.severe("A project and version must be specified.");
+            LOGGER.severe("A project must be specified.");
         } else {
             var buildJacocoReportsDir = Path.of(project.buildDirectory().getPath(), "reports", "jacoco", "test").toFile();
             var buildJacocoExecDir = Path.of(project.buildDirectory().getPath(), "jacoco").toFile();
             var buildJacocoExec = Path.of(buildJacocoExecDir.getPath(), "jacoco.exec").toFile();
 
+            if (execFiles.isEmpty()) {
 //            project.testOperation().fromProject(project).javaOptions().javaAgent(
 //                    Path.of(project.libBldDirectory().getPath(), "org.jacoco.agent-"
 //                            + JaCoCo.VERSION.substring(0, JaCoCo.VERSION.lastIndexOf('.')) + "-runtime.jar").toFile(),
 //                    "destfile=" + Path.of(buildJacocoExecDir.getPath(), "jacoco.exec"));
-            project.testOperation().fromProject(project).javaOptions().add("-javaagent:" +
-                    Path.of(project.libBldDirectory().getPath(), "org.jacoco.agent-"
-                            + JaCoCo.VERSION.substring(0, JaCoCo.VERSION.lastIndexOf('.')) + "-runtime.jar")
-                    + "=destfile=" + Path.of(buildJacocoExecDir.getPath(), "jacoco.exec"));
-            try {
-                project.testOperation().execute();
-            } catch (InterruptedException | ExitStatusException e) {
-                throw new IOException(e);
+                project.testOperation().fromProject(project).javaOptions().add("-javaagent:" +
+                        Path.of(project.libBldDirectory().getPath(), "org.jacoco.agent-"
+                                + JaCoCo.VERSION.substring(0, JaCoCo.VERSION.lastIndexOf('.')) + "-runtime.jar")
+                        + "=destfile=" + Path.of(buildJacocoExecDir.getPath(), "jacoco.exec"));
+                try {
+                    project.testOperation().execute();
+                } catch (InterruptedException | ExitStatusException e) {
+                    throw new IOException(e);
+                }
+
+                if (buildJacocoExec.exists()) {
+                    execFiles.add(buildJacocoExec);
+                }
             }
 
             if (sourceFiles.isEmpty()) {
-                sourceFiles.add(project.srcDirectory());
-                sourceFiles.add(project.srcTestDirectory());
+                sourceFiles.add(project.srcMainJavaDirectory());
             }
 
             if (classFiles.isEmpty()) {
                 classFiles.add(project.buildMainDirectory());
-                classFiles.add(project.buildTestDirectory());
             }
 
             if (html == null) {
@@ -184,10 +188,6 @@ public class JacocoReportOperation extends AbstractOperation<JacocoReportOperati
                 csv = new File(buildJacocoReportsDir, "jacocoTestReport.csv");
             }
 
-            if (execFiles.isEmpty() && (buildJacocoExec.exists())) {
-                execFiles.add(buildJacocoExec);
-            }
-
             //noinspection ResultOfMethodCallIgnored
             buildJacocoReportsDir.mkdirs();
 
@@ -267,7 +267,7 @@ public class JacocoReportOperation extends AbstractOperation<JacocoReportOperati
     }
 
     /**
-     * Sets the locations of the source files.
+     * Sets the locations of the source files. (e.g., {@code src/main/java})
      **/
     public JacocoReportOperation sourceFiles(File... sourceFiles) {
         this.sourceFiles.addAll(Arrays.stream(sourceFiles).toList());
diff --git a/src/test/java/rife/bld/extension/JacocoReportOperationTest.java b/src/test/java/rife/bld/extension/JacocoReportOperationTest.java
index 7dac60b..c8d0e21 100644
--- a/src/test/java/rife/bld/extension/JacocoReportOperationTest.java
+++ b/src/test/java/rife/bld/extension/JacocoReportOperationTest.java
@@ -17,29 +17,64 @@
 package rife.bld.extension;
 
 import org.junit.jupiter.api.Test;
+import rife.bld.Project;
 
 import java.io.File;
 import java.io.IOException;
 import java.nio.file.Files;
 import java.nio.file.Path;
+import java.util.Objects;
 
 import static org.assertj.core.api.Assertions.assertThat;
 
 class JacocoReportOperationTest {
+    final File csv;
+    final File html;
     final Path tempDir;
+    final File xml;
 
     JacocoReportOperationTest() throws IOException {
         tempDir = Files.createTempDirectory("jacoco-test");
+        csv = (new File(tempDir.toFile(), "jacoco.csv"));
+        html = (new File(tempDir.toFile(), "html"));
+        xml = (new File(tempDir.toFile(), "jacoco.xml"));
+    }
+
+    static void deleteOnExit(File folder) {
+        folder.deleteOnExit();
+        for (var f : Objects.requireNonNull(folder.listFiles())) {
+            if (f.isDirectory()) {
+                deleteOnExit(f);
+            } else {
+                f.deleteOnExit();
+            }
+        }
+    }
+
+    @Test
+    void executeTest() throws IOException {
+        newJacocoReportOperation().execute();
+
+        assertThat(csv).exists();
+        assertThat(html).isDirectory();
+        assertThat(xml).exists();
+        try (var lines = Files.lines(xml.toPath())) {
+            assertThat(lines.anyMatch(s ->
+                    s.contains("<counter type=\"INSTRUCTION\" missed=\"0\" covered=\"3\"/>"))).isTrue();
+        }
+
+//        deleteOnExit(tempDir.toFile());
     }
 
     JacocoReportOperation newJacocoReportOperation() {
         var o = new JacocoReportOperation();
-        o.csv(new File(tempDir.toFile(), "jacoco.csv"));
+        o.fromProject(new Project());
+        o.csv(csv);
+        o.html(html);
+        o.xml(xml);
+        o.classFiles(new File("src/test/resources/Examples.class"));
+        o.sourceFiles(new File("examples/src/main/java"));
+        o.execFiles(new File("src/test/resources/jacoco.exec"));
         return o;
     }
-
-    @Test
-    void executeTest() {
-        assertThat(true).isTrue(); // TODO
-    }
 }
\ No newline at end of file
diff --git a/src/test/resources/Examples.class b/src/test/resources/Examples.class
new file mode 100644
index 0000000..3c5d3b3
Binary files /dev/null and b/src/test/resources/Examples.class differ
diff --git a/src/test/resources/jacoco.exec b/src/test/resources/jacoco.exec
new file mode 100644
index 0000000..fc1f7a2
Binary files /dev/null and b/src/test/resources/jacoco.exec differ
diff --git a/update-test-resource.sh b/update-test-resource.sh
new file mode 100755
index 0000000..991b313
--- /dev/null
+++ b/update-test-resource.sh
@@ -0,0 +1,6 @@
+#!/bin/sh
+
+rm -rf src/test/resources/*
+examples/bld co jacoco
+cp -f "examples/build/main/com/example/Examples.class" src/test/resources/
+cp -f "examples/build/jacoco/jacoco.exec" src/test/resources/