add jacoco test code coverage

README.md

@@ -369,6 +369,29 @@ To apply formatting rules, use:
 gw spotlessApply
 ```
 
+### JaCoCo Test Code Coverage Check
+
+This project uses the JaCoCo test code coverage report with limit checks.
+It can be executed with:
+
+```shell
+gw jacocoTestReport
+```
+
+This task is also automatically run after `gw test`.
+It is configured in [build.gradle](build.gradle).
+
+A report is generated under [build/reports/jacoco/tests/test/index.html](./build/reports/jacoco/test/html/index.html).
+
+Additionally, quality limits are checked via:
+
+```shell
+gw jacocoTestCoverageVerification
+```
+
+This task is also executed as part of `gw check`.
+
+
 ### OWASP Security Vulnerability Check
 
 An OWASP security vulnerability is configured and can be utilized by running:

build.gradle

@@ -6,6 +6,7 @@ plugins {
     id 'com.github.jk1.dependency-license-report' version '2.1'
     id "org.owasp.dependencycheck" version "7.1.1"
     id "com.diffplug.spotless" version "6.9.0"
+    id 'jacoco'
 }
 
 group = 'net.hostsharing'
@@ -71,14 +72,19 @@ dependencyManagement {
     }
 }
 
+// Java Compiler Options
 tasks.withType(JavaCompile) {
-    options.compilerArgs += ["-parameters"]
+    options.compilerArgs += [
+            "-parameters" // keep parameter names => no need for @Param for SpringData
+    ]
 }
 
+// Use JUnit Jupiter
 tasks.named('test') {
     useJUnitPlatform()
 }
 
+// OpenAPI Source Code Generation
 openapiProcessor {
     spring {
         processor 'io.openapiprocessor:openapi-processor-spring:2022.4'
@@ -93,6 +99,7 @@ sourceSets.main.java.srcDir 'build/generated/sources/openapi'
 project.tasks.processResources.dependsOn('processSpring')
 project.tasks.compileJava.dependsOn('processSpring')
 
+// Spotless Code Formatting
 spotless {
     java {
         // removeUnusedImports() TODO: reactivate once it can deal with multi-line-strings
@@ -108,6 +115,7 @@ spotless {
 }
 project.tasks.check.dependsOn(spotlessCheck)
 
+// OWASP Dependency Security Test
 dependencyCheck {
     cveValidForHours=4
     format = 'ALL'
@@ -117,8 +125,95 @@ dependencyCheck {
 }
 project.tasks.check.dependsOn(dependencyCheckAnalyze)
 
+// License Check
 licenseReport {
     excludeBoms = true
     allowedLicensesFile = new File("$projectDir/etc/allowed-licenses.json")
 }
 project.tasks.check.dependsOn(checkLicense)
+
+// JaCoCo Test Code Coverage
+jacoco {
+    toolVersion = "0.8.8"
+}
+test {
+    finalizedBy jacocoTestReport // generate report after tests
+    excludes = [
+            'net.hostsharing.hsadminng.generated.**',
+    ]
+}
+jacocoTestReport {
+    dependsOn test
+    afterEvaluate {
+        classDirectories.setFrom(files(classDirectories.files.collect {
+            fileTree(dir: it, exclude: [
+                    "net/hostsharing/hsadminng/generated/**/*.class",
+
+                    // TODO: improve test code coverage for these classes:
+                    "net/hostsharing/hsadminng/rbac/rbacuser/UserController.class",
+                    "net/hostsharing/hsadminng/rbac/rbacgrant/GrantController.class",
+                    "net/hostsharing/hsadminng/hs/hscustomer/CustomerController.class"
+            ])
+        }))
+    }
+    doLast {
+        println "HTML Jacoco Test Code Coverage Report: file://${reports.html.outputLocation.get()}/index.html"
+    }
+}
+project.tasks.check.dependsOn(jacocoTestCoverageVerification)
+jacocoTestCoverageVerification {
+    violationRules {
+        rule {
+            excludes = ['net.hostsharing.hsadminng.generated.**']
+            limit {
+                minimum = 0.7 // TODO: increase to 0.9
+            }
+        }
+
+        // element: PACKAGE, BUNDLE, CLASS, SOURCEFILE or METHOD
+        // counter:  INSTRUCTION, BRANCH, LINE, COMPLEXITY, METHOD, or CLASS
+        // value: TOTALCOUNT, COVEREDCOUNT, MISSEDCOUNT, COVEREDRATIO or MISSEDRATIO
+
+        rule {
+            element = 'CLASS'
+            excludes = [
+                    'net.hostsharing.hsadminng.generated.**',
+                    'net.hostsharing.hsadminng.HsadminNgApplication',
+                    'net.hostsharing.hsadminng.TestController',
+
+                    // TODO: improve test code coverage:
+                    'net.hostsharing.hsadminng.rbac.rbacuser.UserController',
+                    'net.hostsharing.hsadminng.hs.hscustomer.CustomerController'
+            ]
+
+            limit {
+                counter = 'LINE'
+                value = 'COVEREDRATIO'
+                minimum = 0.7
+            }
+        }
+        rule {
+            element = 'METHOD'
+            excludes = [
+                    'net.hostsharing.hsadminng.generated.**',
+                    'net.hostsharing.hsadminng.HsadminNgApplication.*',
+
+                    // TODO: improve test code coverage:
+                    'net.hostsharing.hsadminng.rbac.rbacuser.RbacUserController.listUsers(*)',
+                    'net.hostsharing.hsadminng.rbac.rbacuser.RbacUserController.listUserPermissions(*)',
+                    'net.hostsharing.hsadminng.rbac.rbacgrant.RbacGrantController.listUserGrants(*)',
+                    'net.hostsharing.hsadminng.hs.hscustomer.CustomerController.addCustomer(java.lang.String, java.lang.String, net.hostsharing.hsadminng.generated.api.v1.model.CustomerResource)'
+            ]
+
+            limit {
+                counter = 'BRANCH'
+                value = 'COVEREDRATIO'
+                minimum = 0.5 // TODO: increase test code coverage
+            }
+        }
+    }
+}
+
+
+
+

lombok.config

@@ -0,0 +1 @@
+lombok.addLombokGeneratedAnnotation = true

src/main/java/net/hostsharing/hsadminng/errors/RestResponseEntityExceptionHandler.java

@@ -31,14 +31,14 @@ public class RestResponseEntityExceptionHandler
     protected ResponseEntity<CustomErrorResponse> handleJpaExceptions(
             final RuntimeException exc, final WebRequest request) {
         final var message = firstLine(NestedExceptionUtils.getMostSpecificCause(exc).getMessage());
-        return errorResponse(request, httpStatus(message).orElse(HttpStatus.FORBIDDEN), message);
+        return errorResponse(request, httpStatus(message).orElse(HttpStatus.INTERNAL_SERVER_ERROR), message);
     }
 
     @ExceptionHandler(Throwable.class)
     protected ResponseEntity<CustomErrorResponse> handleOtherExceptions(
-        final RuntimeException exc, final WebRequest request) {
+            final Throwable exc, final WebRequest request) {
         final var message = firstLine(NestedExceptionUtils.getMostSpecificCause(exc).getMessage());
-        return errorResponse(request, httpStatus(message).orElse(HttpStatus.FORBIDDEN), message);
+        return errorResponse(request, httpStatus(message).orElse(HttpStatus.INTERNAL_SERVER_ERROR), message);
     }
 
     private Optional<HttpStatus> httpStatus(final String message) {

src/test/java/net/hostsharing/hsadminng/errors/RestResponseEntityExceptionHandlerUnitTest.java

@@ -0,0 +1,90 @@
+package net.hostsharing.hsadminng.errors;
+
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.extension.ExtendWith;
+import org.mockito.junit.jupiter.MockitoExtension;
+import org.springframework.dao.DataIntegrityViolationException;
+import org.springframework.orm.jpa.JpaSystemException;
+import org.springframework.web.context.request.WebRequest;
+
+import static org.assertj.core.api.Assertions.assertThat;
+import static org.mockito.Mockito.mock;
+
+@ExtendWith(MockitoExtension.class)
+class RestResponseEntityExceptionHandlerUnitTest {
+
+    final RestResponseEntityExceptionHandler exceptionHandler = new RestResponseEntityExceptionHandler();
+
+    @Test
+    void handleConflict() {
+        // given
+        final var givenException = new DataIntegrityViolationException("First Line\nSecond Line\nThird Line");
+        final var givenWebRequest = mock(WebRequest.class);
+
+        // when
+        final var errorResponse = exceptionHandler.handleConflict(givenException, givenWebRequest);
+
+        // then
+        assertThat(errorResponse.getStatusCodeValue()).isEqualTo(409);
+        assertThat(errorResponse.getBody().getMessage()).isEqualTo("First Line");
+    }
+
+    @Test
+    void jpaExceptionWithKnownErrorCode() {
+        // given
+        final var givenException = new JpaSystemException(new RuntimeException(
+                "ERROR: [401] First Line\nSecond Line\nThird Line"));
+        final var givenWebRequest = mock(WebRequest.class);
+
+        // when
+        final var errorResponse = exceptionHandler.handleJpaExceptions(givenException, givenWebRequest);
+
+        // then
+        assertThat(errorResponse.getStatusCodeValue()).isEqualTo(401);
+        assertThat(errorResponse.getBody().getMessage()).isEqualTo("ERROR: [401] First Line");
+    }
+
+    @Test
+    void jpaExceptionWithUnknownErrorCode() {
+        // given
+        final var givenException = new JpaSystemException(new RuntimeException(
+                "ERROR: [999] First Line\nSecond Line\nThird Line"));
+        final var givenWebRequest = mock(WebRequest.class);
+
+        // when
+        final var errorResponse = exceptionHandler.handleJpaExceptions(givenException, givenWebRequest);
+
+        // then
+        assertThat(errorResponse.getStatusCodeValue()).isEqualTo(500);
+        assertThat(errorResponse.getBody().getMessage()).isEqualTo("ERROR: [999] First Line");
+    }
+
+    @Test
+    void handleOtherExceptionsWithoutErrorCode() {
+        // given
+        final var givenThrowable = new Error("First Line\nSecond Line\nThird Line");
+        final var givenWebRequest = mock(WebRequest.class);
+
+        // when
+        final var errorResponse = exceptionHandler.handleOtherExceptions(givenThrowable, givenWebRequest);
+
+        // then
+        assertThat(errorResponse.getStatusCodeValue()).isEqualTo(500);
+        assertThat(errorResponse.getBody().getMessage()).isEqualTo("First Line");
+    }
+
+    @Test
+    void handleOtherExceptionsWithErrorCode() {
+        // given
+        final var givenThrowable = new Error("ERROR: [418] First Line\nSecond Line\nThird Line");
+        final var givenWebRequest = mock(WebRequest.class);
+
+        // when
+        final var errorResponse = exceptionHandler.handleOtherExceptions(givenThrowable, givenWebRequest);
+
+        // then
+        assertThat(errorResponse.getStatusCodeValue()).isEqualTo(418);
+        assertThat(errorResponse.getBody().getMessage()).isEqualTo("ERROR: [418] First Line");
+    }
+
+}

src/test/java/net/hostsharing/hsadminng/hs/hscustomer/CustomerControllerRestTest.java

@@ -1,6 +1,7 @@
 package net.hostsharing.hsadminng.hs.hscustomer;
 
 import net.hostsharing.hsadminng.context.Context;
+import org.junit.jupiter.api.Nested;
 import org.junit.jupiter.api.Test;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.boot.test.autoconfigure.web.servlet.WebMvcTest;
@@ -28,6 +29,9 @@ class CustomerControllerRestTest {
     @MockBean
     CustomerRepository customerRepositoryMock;
 
+    @Nested
+    class ListCustomers {
+
         @Test
         void listCustomersWillReturnAllCustomersFromRepositoryIfNoCriteriaGiven() throws Exception {
 
@@ -101,5 +105,6 @@ class CustomerControllerRestTest {
             verify(contextMock).setCurrentUser("mike@hostsharing.net");
             verify(contextMock).assumeRoles("admin@yyy.example.com");
         }
+    }
 
 }

src/test/java/net/hostsharing/hsadminng/rbac/rbacgrant/RbacGrantRepositoryIntegrationTest.java

@@ -17,7 +17,6 @@ import org.springframework.transaction.annotation.Propagation;
 import org.springframework.transaction.annotation.Transactional;
 
 import javax.persistence.EntityManager;
-import javax.persistence.PersistenceException;
 import java.util.List;
 import java.util.UUID;
 
@@ -125,7 +124,8 @@ class RbacGrantRepositoryIntegrationTest {
             assertThat(attempt.caughtException()).isNull();
             assertThat(rbacGrantRepository.findAll())
                     .extracting(RbacGrantEntity::toDisplay)
-                .contains("{ grant assumed role package#aaa00.admin to user aac00@aac.example.com by role customer#aaa.admin }");
+                    .contains(
+                            "{ grant assumed role package#aaa00.admin to user aac00@aac.example.com by role customer#aaa.admin }");
         }
 
         @Test
@@ -238,7 +238,7 @@ class RbacGrantRepositoryIntegrationTest {
 
             // then
             revokeAttempt.assertExceptionWithRootCauseMessage(
-                PersistenceException.class,
+                    JpaSystemException.class,
                     "ERROR: [403] Revoking role created by %s is forbidden for {package#aaa00.admin}.".formatted(
                             grantedByRole.getUuid()
                     ));