Upgrade JUnit to 4.13.2

ExpectedException is deprecated, so I fixed the new warnings. However,
we are still using ExpectedException many places and had previously
supressed the warning. See
#7467 . I did not fix those
existing instances that had suppressed the warning, since it is
unrelated to the upgrade and we have been free to fix them at any time
since we dropped Java 7.

core/src/test/java/io/grpc/internal/ReadableBuffersTest.java

@@ -19,6 +19,7 @@
 import static com.google.common.base.Charsets.UTF_8;
 import static org.junit.Assert.assertArrayEquals;
 import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertThrows;
 import static org.junit.Assert.assertTrue;
 import static org.mockito.ArgumentMatchers.anyInt;
 import static org.mockito.Mockito.mock;
@@ -32,9 +33,7 @@
 import java.io.IOException;
 import java.io.InputStream;
 import java.nio.InvalidMarkException;
-import org.junit.Rule;
 import org.junit.Test;
-import org.junit.rules.ExpectedException;
 import org.junit.runner.RunWith;
 import org.junit.runners.JUnit4;
 
@@ -46,9 +45,6 @@
 public class ReadableBuffersTest {
   private static final byte[] MSG_BYTES = "hello".getBytes(UTF_8);
 
-  @Rule
-  public final ExpectedException thrown = ExpectedException.none();
-
   @Test
   public void empty_returnsEmptyBuffer() {
     ReadableBuffer buffer = ReadableBuffers.empty();
@@ -216,8 +212,7 @@ public void bufferInputStream_markDiscardedAfterDetached() throws IOException {
     InputStream inputStream = ReadableBuffers.openStream(buffer, true);
     inputStream.mark(5);
     ((Detachable) inputStream).detach();
-    thrown.expect(InvalidMarkException.class);
-    inputStream.reset();
+    assertThrows(InvalidMarkException.class, () -> inputStream.reset());
   }
 
   @Test

examples/android/clientcache/app/build.gradle

@@ -59,7 +59,7 @@ dependencies {
     implementation 'io.grpc:grpc-stub:1.53.0-SNAPSHOT' // CURRENT_GRPC_VERSION
     implementation 'org.apache.tomcat:annotations-api:6.0.53'
 
-    testImplementation 'junit:junit:4.12'
+    testImplementation 'junit:junit:4.13.2'
     testImplementation 'com.google.truth:truth:1.0.1'
     testImplementation 'io.grpc:grpc-testing:1.53.0-SNAPSHOT' // CURRENT_GRPC_VERSION
 }

examples/build.gradle

@@ -36,7 +36,7 @@ dependencies {
     runtimeOnly "io.grpc:grpc-netty-shaded:${grpcVersion}"
 
     testImplementation "io.grpc:grpc-testing:${grpcVersion}"
-    testImplementation "junit:junit:4.12"
+    testImplementation "junit:junit:4.13.2"
     testImplementation "org.mockito:mockito-core:3.4.0"
 }
 

examples/example-gauth/pom.xml

@@ -73,7 +73,7 @@
     <dependency>
       <groupId>junit</groupId>
       <artifactId>junit</artifactId>
-      <version>4.12</version>
+      <version>4.13.2</version>
       <scope>test</scope>
     </dependency>
     <dependency>

examples/example-hostname/build.gradle

@@ -31,7 +31,7 @@ dependencies {
     compileOnly "org.apache.tomcat:annotations-api:6.0.53"
     runtimeOnly "io.grpc:grpc-netty-shaded:${grpcVersion}"
 
-    testImplementation 'junit:junit:4.12'
+    testImplementation 'junit:junit:4.13.2'
     testImplementation "io.grpc:grpc-testing:${grpcVersion}"
 }
 

examples/example-hostname/pom.xml

@@ -58,7 +58,7 @@
     <dependency>
       <groupId>junit</groupId>
       <artifactId>junit</artifactId>
-      <version>4.12</version>
+      <version>4.13.2</version>
       <scope>test</scope>
     </dependency>
     <dependency>

examples/example-jwt-auth/build.gradle

@@ -37,7 +37,7 @@ dependencies {
     runtimeOnly "io.grpc:grpc-netty-shaded:${grpcVersion}"
 
     testImplementation "io.grpc:grpc-testing:${grpcVersion}"
-    testImplementation "junit:junit:4.12"
+    testImplementation "junit:junit:4.13.2"
     testImplementation "org.mockito:mockito-core:3.4.0"
 }
 

examples/example-jwt-auth/pom.xml

@@ -71,7 +71,7 @@
     <dependency>
       <groupId>junit</groupId>
       <artifactId>junit</artifactId>
-      <version>4.12</version>
+      <version>4.13.2</version>
       <scope>test</scope>
     </dependency>
     <dependency>

examples/pom.xml

@@ -70,7 +70,7 @@
     <dependency>
       <groupId>junit</groupId>
       <artifactId>junit</artifactId>
-      <version>4.12</version>
+      <version>4.13.2</version>
       <scope>test</scope>
     </dependency>
     <dependency>

gradle/libs.versions.toml

@@ -39,7 +39,7 @@ hdrhistogram = "org.hdrhistogram:HdrHistogram:2.1.12"
 javax-annotation = "org.apache.tomcat:annotations-api:6.0.53"
 jetty-alpn-agent = "org.mortbay.jetty.alpn:jetty-alpn-agent:2.0.10"
 jsr305 = "com.google.code.findbugs:jsr305:3.0.2"
-junit = "junit:junit:4.12"
+junit = "junit:junit:4.13.2"
 mockito-android = "org.mockito:mockito-android:3.8.0"
 mockito-core = "org.mockito:mockito-core:3.3.3"
 netty-codec-http2 = { module = "io.netty:netty-codec-http2", version.ref = "netty" }

netty/src/test/java/io/grpc/netty/AdvancedTlsTest.java

@@ -16,8 +16,10 @@
 
 package io.grpc.netty;
 
+import static com.google.common.truth.Truth.assertThat;
 import static org.junit.Assert.assertArrayEquals;
 import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertThrows;
 import static org.junit.Assert.fail;
 
 import com.google.common.util.concurrent.MoreExecutors;
@@ -56,9 +58,7 @@
 import javax.net.ssl.SSLEngine;
 import org.junit.After;
 import org.junit.Before;
-import org.junit.Rule;
 import org.junit.Test;
-import org.junit.rules.ExpectedException;
 import org.junit.runner.RunWith;
 import org.junit.runners.JUnit4;
 
@@ -89,9 +89,6 @@ public class AdvancedTlsTest {
   private PrivateKey serverKeyBad;
   private X509Certificate[] serverCertBad;
 
-  @Rule
-  public ExpectedException exceptionRule = ExpectedException.none();
-
   @Before
   public void setUp()
       throws NoSuchAlgorithmException, IOException, CertificateException, InvalidKeySpecException {
@@ -427,24 +424,22 @@ public void onFileLoadingKeyManagerTrustManagerTest() throws Exception {
 
   @Test
   public void onFileReloadingKeyManagerBadInitialContentTest() throws Exception {
-    exceptionRule.expect(GeneralSecurityException.class);
     AdvancedTlsX509KeyManager keyManager = new AdvancedTlsX509KeyManager();
     // We swap the order of key and certificates to intentionally create an exception.
-    Closeable keyShutdown = keyManager.updateIdentityCredentialsFromFile(serverCert0File,
-        serverKey0File, 100, TimeUnit.MILLISECONDS, executor);
-    keyShutdown.close();
+    assertThrows(GeneralSecurityException.class,
+        () -> keyManager.updateIdentityCredentialsFromFile(serverCert0File,
+          serverKey0File, 100, TimeUnit.MILLISECONDS, executor));
   }
 
   @Test
   public void onFileReloadingTrustManagerBadInitialContentTest() throws Exception {
-    exceptionRule.expect(GeneralSecurityException.class);
     AdvancedTlsX509TrustManager trustManager = AdvancedTlsX509TrustManager.newBuilder()
         .setVerification(Verification.CERTIFICATE_ONLY_VERIFICATION)
         .build();
     // We pass in a key as the trust certificates to intentionally create an exception.
-    Closeable trustShutdown = trustManager.updateTrustCredentialsFromFile(serverKey0File,
-        100, TimeUnit.MILLISECONDS, executor);
-    trustShutdown.close();
+    assertThrows(GeneralSecurityException.class,
+        () -> trustManager.updateTrustCredentialsFromFile(serverKey0File,
+          100, TimeUnit.MILLISECONDS, executor));
   }
 
   @Test
@@ -472,40 +467,38 @@ public void trustManagerCheckTrustedWithSocketTest() throws Exception {
 
   @Test
   public void trustManagerCheckClientTrustedWithoutParameterTest() throws Exception {
-    exceptionRule.expect(CertificateException.class);
-    exceptionRule.expectMessage(
-        "Not enough information to validate peer. SSLEngine or Socket required.");
     AdvancedTlsX509TrustManager tm = AdvancedTlsX509TrustManager.newBuilder()
         .setVerification(Verification.INSECURELY_SKIP_ALL_VERIFICATION).build();
-    tm.checkClientTrusted(serverCert0, "RSA");
+    CertificateException ex =
+        assertThrows(CertificateException.class, () -> tm.checkClientTrusted(serverCert0, "RSA"));
+    assertThat(ex).hasMessageThat()
+        .isEqualTo("Not enough information to validate peer. SSLEngine or Socket required.");
   }
 
   @Test
   public void trustManagerCheckServerTrustedWithoutParameterTest() throws Exception {
-    exceptionRule.expect(CertificateException.class);
-    exceptionRule.expectMessage(
-        "Not enough information to validate peer. SSLEngine or Socket required.");
     AdvancedTlsX509TrustManager tm = AdvancedTlsX509TrustManager.newBuilder()
         .setVerification(Verification.INSECURELY_SKIP_ALL_VERIFICATION).build();
-    tm.checkServerTrusted(serverCert0, "RSA");
+    CertificateException ex =
+        assertThrows(CertificateException.class, () -> tm.checkServerTrusted(serverCert0, "RSA"));
+    assertThat(ex).hasMessageThat()
+        .isEqualTo("Not enough information to validate peer. SSLEngine or Socket required.");
   }
 
   @Test
   public void trustManagerEmptyChainTest() throws Exception {
-    exceptionRule.expect(IllegalArgumentException.class);
-    exceptionRule.expectMessage(
-        "Want certificate verification but got null or empty certificates");
     AdvancedTlsX509TrustManager tm = AdvancedTlsX509TrustManager.newBuilder()
         .setVerification(Verification.CERTIFICATE_ONLY_VERIFICATION)
         .build();
     tm.updateTrustCredentials(caCert);
-    tm.checkClientTrusted(null, "RSA", (SSLEngine) null);
+    IllegalArgumentException ex = assertThrows(IllegalArgumentException.class,
+        () -> tm.checkClientTrusted(null, "RSA", (SSLEngine) null));
+    assertThat(ex).hasMessageThat()
+        .isEqualTo("Want certificate verification but got null or empty certificates");
   }
 
   @Test
   public void trustManagerBadCustomVerificationTest() throws Exception {
-    exceptionRule.expect(CertificateException.class);
-    exceptionRule.expectMessage("Bad Custom Verification");
     AdvancedTlsX509TrustManager tm = AdvancedTlsX509TrustManager.newBuilder()
         .setVerification(Verification.CERTIFICATE_ONLY_VERIFICATION)
         .setSslSocketAndEnginePeerVerifier(
@@ -523,7 +516,10 @@ public void verifyPeerCertificate(X509Certificate[] peerCertChain, String authTy
               }
             }).build();
     tm.updateTrustCredentials(caCert);
-    tm.checkClientTrusted(serverCert0, "RSA", new Socket());
+    CertificateException ex = assertThrows(
+        CertificateException.class,
+        () -> tm.checkClientTrusted(serverCert0, "RSA", new Socket()));
+    assertThat(ex).hasMessageThat().isEqualTo("Bad Custom Verification");
   }
 
   private static class SimpleServiceImpl extends SimpleServiceGrpc.SimpleServiceImplBase {