Migrates "test/com/google/javascript/jscomp/**.java" to use JUnit4 ru…

…nner and annotations.

-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=213944759

test/com/google/javascript/jscomp/transpile/BaseTranspilerTest.java

@@ -24,11 +24,16 @@
 import java.net.URI;
 import java.net.URISyntaxException;
 import junit.framework.TestCase;
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.junit.runners.JUnit4;
 import org.mockito.Mock;
 import org.mockito.MockitoAnnotations;
 
 /** Tests for {@link BaseTranspiler}. */
 
+@RunWith(JUnit4.class)
 public final class BaseTranspilerTest extends TestCase {
 
   private Transpiler transpiler;
@@ -48,6 +53,7 @@ public final class BaseTranspilerTest extends TestCase {
   }
 
   @Override
+  @Before
   public void setUp() {
     MockitoAnnotations.initMocks(this);
     transpiler = new BaseTranspiler(mockCompiler, "es6_runtime");
@@ -56,27 +62,31 @@ public void setUp() {
 
   // Tests for BaseTranspiler
 
+  @Test
   public void testTranspiler_transpile() {
     when(mockCompiler.compile(FOO_JS, "bar"))
         .thenReturn(new BaseTranspiler.CompileResult("result", true, "srcmap"));
     assertThat(transpiler.transpile(FOO_JS, "bar"))
         .isEqualTo(new TranspileResult(FOO_JS, "bar", "result", "srcmap"));
   }
 
+  @Test
   public void testTranspiler_noTranspilation() {
     when(mockCompiler.compile(FOO_JS, "bar"))
         .thenReturn(new BaseTranspiler.CompileResult("result", false, "srcmap"));
     assertThat(transpiler.transpile(FOO_JS, "bar"))
         .isEqualTo(new TranspileResult(FOO_JS, "bar", "bar", ""));
   }
 
+  @Test
   public void testTranspiler_runtime() {
     when(mockCompiler.runtime("es6_runtime")).thenReturn("$jscomp.es6();");
     assertThat(transpiler.runtime()).isEqualTo("$jscomp.es6();");
   }
 
   // Tests for CompilerSupplier
 
+  @Test
   public void testCompilerSupplier_compileChanged() {
     BaseTranspiler.CompileResult result = compiler.compile(SOURCE_JS, "const x = () => 42;");
     assertThat(result.source).isEqualTo("var x = function() {\n  return 42;\n};\n");
@@ -85,20 +95,23 @@ public void testCompilerSupplier_compileChanged() {
         .contains("\"mappings\":\"AAAA,IAAMA,IAAIA,QAAA,EAAM;AAAA,SAAA,EAAA;AAAA,CAAhB;;\"");
   }
 
+  @Test
   public void testCompilerSupplier_compileNoChange() {
     BaseTranspiler.CompileResult result = compiler.compile(SOURCE_JS, "var x = 42;");
     assertThat(result.source).isEqualTo("var x = 42;\n");
     assertThat(result.transpiled).isFalse();
     assertThat(result.sourceMap).isEmpty();
   }
 
+  @Test
   public void testCompilerSupplier_error() {
     try {
       compiler.compile(SOURCE_JS, "cons x = () => 42;");
       fail("Expected an exception.");
     } catch (TranspilationException expected) {}
   }
 
+  @Test
   public void testCompilerSupplier_runtime() {
     String runtime = compiler.runtime("es6_runtime");
     assertThat(runtime).contains("$jscomp.polyfill(\"Map\"");

test/com/google/javascript/jscomp/transpile/CachingTranspilerTest.java

@@ -26,10 +26,15 @@
 import java.net.URI;
 import java.net.URISyntaxException;
 import junit.framework.TestCase;
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.junit.runners.JUnit4;
 import org.mockito.Mock;
 import org.mockito.MockitoAnnotations;
 
 /** Tests for {@link CachingTranspiler}. */
+@RunWith(JUnit4.class)
 public final class CachingTranspilerTest extends TestCase {
 
   private Transpiler transpiler;
@@ -57,23 +62,27 @@ public final class CachingTranspilerTest extends TestCase {
   }
 
   @Override
+  @Before
   public void setUp() {
     MockitoAnnotations.initMocks(this);
     transpiler = new CachingTranspiler(delegate, CacheBuilder.newBuilder());
   }
 
+  @Test
   public void testTranspileDelegates() {
     when(delegate.transpile(FOO_JS, "bar")).thenReturn(RESULT1);
     assertThat(transpiler.transpile(FOO_JS, "bar")).isSameAs(RESULT1);
   }
 
+  @Test
   public void testTranspileCaches() {
     when(delegate.transpile(FOO_JS, "bar")).thenReturn(RESULT1);
     assertThat(transpiler.transpile(FOO_JS, "bar")).isSameAs(RESULT1);
     assertThat(transpiler.transpile(FOO_JS, "bar")).isSameAs(RESULT1);
     verify(delegate, times(1)).transpile(FOO_JS, "bar");
   }
 
+  @Test
   public void testTranspileDependsOnBothPathAndCode() {
     when(delegate.transpile(FOO_JS, "bar")).thenReturn(RESULT1);
     when(delegate.transpile(BAR_JS, "bar")).thenReturn(RESULT2);
@@ -83,11 +92,13 @@ public void testTranspileDependsOnBothPathAndCode() {
     assertThat(transpiler.transpile(FOO_JS, "bard")).isSameAs(RESULT3);
   }
 
+  @Test
   public void testRuntimeDelegates() {
     when(delegate.runtime()).thenReturn("xyzzy");
     assertThat(transpiler.runtime()).isSameAs("xyzzy");
   }
 
+  @Test
   public void testRuntimeCaches() {
     when(delegate.runtime()).thenReturn("xyzzy");
     assertThat(transpiler.runtime()).isSameAs("xyzzy");

test/com/google/javascript/jscomp/transpile/TranspileResultTest.java

@@ -21,11 +21,16 @@
 import com.google.common.testing.EqualsTester;
 import java.net.URI;
 import junit.framework.TestCase;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.junit.runners.JUnit4;
 
 /** Tests for {@link TranspileResult}. */
 
+@RunWith(JUnit4.class)
 public final class TranspileResultTest extends TestCase {
 
+  @Test
   public void testEquals() throws Exception {
     new EqualsTester()
         .addEqualityGroup(
@@ -38,12 +43,14 @@ public void testEquals() throws Exception {
         .testEquals();
   }
 
+  @Test
   public void testEmbedSourceMap_noSourceMap() throws Exception {
     TranspileResult result = new TranspileResult(new URI("a"), "b", "c", "");
     assertThat(result.embedSourcemap()).isSameAs(result);
     assertThat(result.embedSourcemapUrl("foo")).isSameAs(result);
   }
 
+  @Test
   public void testEmbedSourceMap() throws Exception {
     TranspileResult result = new TranspileResult(new URI("a"), "b", "c", "{\"version\": 3}");
     assertThat(result.embedSourcemap())