chore: Migrate tests to use JUnit5

appengine/javatests/com/google/auth/appengine/AppEngineCredentialsTest.java

@@ -31,13 +31,13 @@
 
 package com.google.auth.appengine;
 
-import static org.junit.Assert.assertArrayEquals;
-import static org.junit.Assert.assertEquals;
-import static org.junit.Assert.assertFalse;
-import static org.junit.Assert.assertNotNull;
-import static org.junit.Assert.assertNotSame;
-import static org.junit.Assert.assertTrue;
-import static org.junit.Assert.fail;
+import static org.junit.jupiter.api.Assertions.assertArrayEquals;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertNotEquals;
+import static org.junit.jupiter.api.Assertions.assertNotNull;
+import static org.junit.jupiter.api.Assertions.assertNotSame;
+import static org.junit.jupiter.api.Assertions.assertTrue;
+import static org.junit.jupiter.api.Assertions.fail;
 
 import com.google.auth.Credentials;
 import com.google.auth.oauth2.AccessToken;
@@ -51,21 +51,18 @@
 import java.util.Date;
 import java.util.List;
 import java.util.Map;
-import org.junit.Test;
-import org.junit.runner.RunWith;
-import org.junit.runners.JUnit4;
+import org.junit.jupiter.api.Test;
 
 /** Unit tests for AppEngineCredentials */
-@RunWith(JUnit4.class)
-public class AppEngineCredentialsTest extends BaseSerializationTest {
+class AppEngineCredentialsTest extends BaseSerializationTest {
 
-  private static Collection<String> SCOPES =
+  private static final Collection<String> SCOPES =
       Collections.unmodifiableCollection(Arrays.asList("scope1", "scope2"));
   private static final URI CALL_URI = URI.create("http://googleapis.com/testapi/v1/foo");
   private static final String EXPECTED_ACCOUNT = "serviceAccount";
 
   @Test
-  public void constructor_usesAppIdentityService() throws IOException {
+  void constructor_usesAppIdentityService() throws IOException {
     String expectedAccessToken = "ExpectedAccessToken";
 
     MockAppIdentityService appIdentity = new MockAppIdentityService();
@@ -83,7 +80,7 @@ public void constructor_usesAppIdentityService() throws IOException {
   }
 
   @Test
-  public void refreshAccessToken_sameAs() throws IOException {
+  void refreshAccessToken_sameAs() throws IOException {
     String expectedAccessToken = "ExpectedAccessToken";
 
     MockAppIdentityService appIdentity = new MockAppIdentityService();
@@ -100,7 +97,7 @@ public void refreshAccessToken_sameAs() throws IOException {
   }
 
   @Test
-  public void getAccount_sameAs() throws IOException {
+  void getAccount_sameAs() {
     MockAppIdentityService appIdentity = new MockAppIdentityService();
     appIdentity.setServiceAccountName(EXPECTED_ACCOUNT);
     AppEngineCredentials credentials =
@@ -112,7 +109,7 @@ public void getAccount_sameAs() throws IOException {
   }
 
   @Test
-  public void sign_sameAs() throws IOException {
+  void sign_sameAs() {
     byte[] expectedSignature = {0xD, 0xE, 0xA, 0xD};
     MockAppIdentityService appIdentity = new MockAppIdentityService();
     appIdentity.setSignature(expectedSignature);
@@ -125,7 +122,7 @@ public void sign_sameAs() throws IOException {
   }
 
   @Test
-  public void createScoped_clonesWithScopes() throws IOException {
+  void createScoped_clonesWithScopes() throws IOException {
     String expectedAccessToken = "ExpectedAccessToken";
     Collection<String> emptyScopes = Collections.emptyList();
 
@@ -155,7 +152,7 @@ public void createScoped_clonesWithScopes() throws IOException {
   }
 
   @Test
-  public void equals_true() throws IOException {
+  void equals_true() {
     Collection<String> emptyScopes = Collections.emptyList();
     MockAppIdentityService appIdentity = new MockAppIdentityService();
 
@@ -169,13 +166,12 @@ public void equals_true() throws IOException {
             .setScopes(emptyScopes)
             .setAppIdentityService(appIdentity)
             .build();
-    assertTrue(credentials.equals(credentials));
-    assertTrue(credentials.equals(otherCredentials));
-    assertTrue(otherCredentials.equals(credentials));
+    assertEquals(credentials, otherCredentials);
+    assertEquals(otherCredentials, credentials);
   }
 
   @Test
-  public void equals_false_scopes() throws IOException {
+  void equals_false_scopes() {
     Collection<String> emptyScopes = Collections.emptyList();
     Collection<String> scopes = Collections.singleton("SomeScope");
     MockAppIdentityService appIdentity = new MockAppIdentityService();
@@ -190,12 +186,12 @@ public void equals_false_scopes() throws IOException {
             .setScopes(scopes)
             .setAppIdentityService(appIdentity)
             .build();
-    assertFalse(credentials.equals(otherCredentials));
-    assertFalse(otherCredentials.equals(credentials));
+    assertNotEquals(credentials, otherCredentials);
+    assertNotEquals(otherCredentials, credentials);
   }
 
   @Test
-  public void toString_containsFields() throws IOException {
+  void toString_containsFields() {
     String expectedToString =
         String.format(
             "AppEngineCredentials{scopes=[%s], scopesRequired=%b, appIdentityServiceClassName=%s}",
@@ -213,7 +209,7 @@ public void toString_containsFields() throws IOException {
   }
 
   @Test
-  public void hashCode_equals() throws IOException {
+  void hashCode_equals() {
     Collection<String> emptyScopes = Collections.emptyList();
     MockAppIdentityService appIdentity = new MockAppIdentityService();
     AppEngineCredentials credentials =
@@ -230,7 +226,7 @@ public void hashCode_equals() throws IOException {
   }
 
   @Test
-  public void serialize() throws IOException, ClassNotFoundException {
+  void serialize() throws IOException, ClassNotFoundException {
     Collection<String> scopes = Collections.singleton("SomeScope");
     MockAppIdentityService appIdentity = new MockAppIdentityService();
     AppEngineCredentials credentials =
@@ -249,7 +245,7 @@ private static void assertContainsBearerToken(Map<String, List<String>> metadata
     assertNotNull(token);
     String expectedValue = "Bearer " + token;
     List<String> authorizations = metadata.get("Authorization");
-    assertNotNull("Authorization headers not found", authorizations);
-    assertTrue("Bearer token not found", authorizations.contains(expectedValue));
+    assertNotNull(authorizations, "Authorization headers not found");
+    assertTrue(authorizations.contains(expectedValue), "Bearer token not found");
   }
 }

appengine/pom.xml

@@ -64,8 +64,13 @@
       <artifactId>guava</artifactId>
     </dependency>
     <dependency>
-      <groupId>junit</groupId>
-      <artifactId>junit</artifactId>
+      <groupId>org.junit.jupiter</groupId>
+      <artifactId>junit-jupiter-api</artifactId>
+      <scope>test</scope>
+    </dependency>
+    <dependency>
+      <groupId>org.junit.jupiter</groupId>
+      <artifactId>junit-jupiter-engine</artifactId>
       <scope>test</scope>
     </dependency>
     <dependency>