test: use static imports for Assert.fail

Author: kannanjgithub

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

@@ -36,6 +36,7 @@
 import io.grpc.Metadata;
 import io.grpc.Status;
 import io.grpc.StatusException;
+import static org.junit.Assert.fail;
 import java.lang.reflect.Method;
 import java.lang.reflect.Modifier;
 import java.util.Arrays;
@@ -287,7 +288,7 @@ public Void answer(org.mockito.invocation.InvocationOnMock invocation) {
 
     try {
       runnable.run();
-      org.junit.Assert.fail("Should have thrown");
+      fail("Should have thrown");
     } catch (RuntimeException e) {
       assertThat(e).isSameInstanceAs(error);
     }
@@ -298,7 +299,7 @@ public Void answer(org.mockito.invocation.InvocationOnMock invocation) {
     // Verify it transitioned to passThrough by showing it forwards.
     try {
       delayedListener.onReady();
-      org.junit.Assert.fail("Should have thrown");
+      fail("Should have thrown");
     } catch (RuntimeException e) {
       assertThat(e).isSameInstanceAs(error);
     }

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

@@ -22,6 +22,7 @@
 import static org.junit.Assert.assertNotNull;
 import static org.junit.Assert.assertNull;
 import static org.junit.Assert.assertTrue;
+import static org.junit.Assert.fail;
 import static org.mockito.ArgumentMatchers.any;
 import static org.mockito.ArgumentMatchers.eq;
 import static org.mockito.ArgumentMatchers.same;
@@ -527,7 +528,7 @@ public Void answer(InvocationOnMock invocation) {
 
     try {
       runnable.run();
-      org.junit.Assert.fail("Should have thrown");
+      fail("Should have thrown");
     } catch (RuntimeException e) {
       assertThat(e).isSameInstanceAs(error);
     }
@@ -539,7 +540,7 @@ public Void answer(InvocationOnMock invocation) {
     // If it is passThrough, it will forward to the listener, which we know throws.
     try {
       delayedListener.onReady();
-      org.junit.Assert.fail("Should have thrown");
+      fail("Should have thrown");
     } catch (RuntimeException e) {
       assertThat(e).isSameInstanceAs(error);
     }