[Android] Restrict tests inheriting from DocumentModeTestBase to phones.

base/test/android/junit/src/org/chromium/base/test/util/SkipCheckTest.java

+// Copyright 2016 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+package org.chromium.base.test.util;
+
+import junit.framework.TestCase;
+
+import org.chromium.testing.local.LocalRobolectricTestRunner;
+import org.junit.Assert;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.robolectric.annotation.Config;
+
+import java.lang.annotation.Annotation;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.lang.reflect.AnnotatedElement;
+import java.lang.reflect.Method;
+import java.util.List;
+
+/** Unit tests for SkipCheck. */
+@RunWith(LocalRobolectricTestRunner.class)
+@Config(manifest = Config.NONE)
+public class SkipCheckTest {
+
+    private static class TestableSkipCheck extends SkipCheck {
+        public static <T extends Annotation> List<T> getAnnotationsForTesting(
+                AnnotatedElement element, Class<T> annotationClass) {
+            return getAnnotations(element, annotationClass);
+        }
+
+        @Override
+        public boolean shouldSkip(TestCase t) {
+            return false;
+        }
+    }
+
+    @Retention(RetentionPolicy.RUNTIME)
+    private @interface TestAnnotation {}
+
+    private class UnannotatedBaseClass {
+        public void unannotatedMethod() {}
+        @TestAnnotation public void annotatedMethod() {}
+    }
+
+    @TestAnnotation
+    private class AnnotatedBaseClass {
+        public void unannotatedMethod() {}
+        @TestAnnotation public void annotatedMethod() {}
+    }
+
+    private class ExtendsAnnotatedBaseClass extends AnnotatedBaseClass {
+        public void anotherUnannotatedMethod() {}
+    }
+
+    @Test
+    public void getAnnotationsForClassNone() {
+        List<TestAnnotation> annotations = TestableSkipCheck.getAnnotationsForTesting(
+                UnannotatedBaseClass.class, TestAnnotation.class);
+        Assert.assertTrue(annotations.isEmpty());

[newt (away), 2016/03/08 00:26:56]

IMO, "assertEquals(0, annotations.size())" will produce a slightly more helpful
error message.

[jbudorick, 2016/03/08 01:49:26]

hm, it does. switched here and below.

+    }
+
+    @Test
+    public void getAnnotationsForClassOnClass() {
+        List<TestAnnotation> annotations = TestableSkipCheck.getAnnotationsForTesting(
+                AnnotatedBaseClass.class, TestAnnotation.class);
+        Assert.assertEquals(1, annotations.size());
+    }
+
+    @Test
+    public void getAnnotationsForClassOnSuperclass() {
+        List<TestAnnotation> annotations = TestableSkipCheck.getAnnotationsForTesting(
+                ExtendsAnnotatedBaseClass.class, TestAnnotation.class);
+        Assert.assertEquals(1, annotations.size());
+    }
+
+    @Test
+    public void getAnnotationsForMethodNone() throws NoSuchMethodException {
+        Method testMethod = UnannotatedBaseClass.class.getMethod("unannotatedMethod",
+                (Class[]) null);
+        List<TestAnnotation> annotations = TestableSkipCheck.getAnnotationsForTesting(
+                testMethod, TestAnnotation.class);
+        Assert.assertTrue(annotations.isEmpty());
+    }
+
+    @Test
+    public void getAnnotationsForMethodOnMethod() throws NoSuchMethodException {
+        Method testMethod = UnannotatedBaseClass.class.getMethod("annotatedMethod",
+                (Class[]) null);
+        List<TestAnnotation> annotations = TestableSkipCheck.getAnnotationsForTesting(
+                testMethod, TestAnnotation.class);
+        Assert.assertEquals(1, annotations.size());
+    }
+
+    @Test
+    public void getAnnotationsForMethodOnClass() throws NoSuchMethodException {
+        Method testMethod = AnnotatedBaseClass.class.getMethod("unannotatedMethod",
+                (Class[]) null);
+        List<TestAnnotation> annotations = TestableSkipCheck.getAnnotationsForTesting(
+                testMethod, TestAnnotation.class);
+        Assert.assertEquals(1, annotations.size());
+    }
+
+    @Test
+    public void getAnnotationsForMethodOnSuperclass() throws NoSuchMethodException {
+        Method testMethod = ExtendsAnnotatedBaseClass.class.getMethod("unannotatedMethod",
+                (Class[]) null);
+        List<TestAnnotation> annotations = TestableSkipCheck.getAnnotationsForTesting(
+                testMethod, TestAnnotation.class);
+        Assert.assertEquals(1, annotations.size());
+    }
+
+    @Test
+    public void getAnnotationsOverlapping() throws NoSuchMethodException {
+        Method testMethod = AnnotatedBaseClass.class.getMethod("annotatedMethod",
+                (Class[]) null);
+        List<TestAnnotation> annotations = TestableSkipCheck.getAnnotationsForTesting(
+                testMethod, TestAnnotation.class);
+        Assert.assertEquals(2, annotations.size());
+    }
+
+}