[Android] Check for Java object types covariance in Java Bridge

content/browser/android/java/java_type_unittest.cc

Index: content/browser/android/java/java_type_unittest.cc
diff --git a/content/browser/android/java/java_type_unittest.cc b/content/browser/android/java/java_type_unittest.cc
new file mode 100644
index 0000000000000000000000000000000000000000..0980d6393a52dd58c6061be7349ff8536dd0ea2c
--- /dev/null
+++ b/content/browser/android/java/java_type_unittest.cc
@@ -0,0 +1,87 @@
+// Copyright 2014 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.
+
+#include "content/browser/android/java/java_type.h"
+
+#include "base/macros.h"
+#include "base/memory/scoped_ptr.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+namespace content {
+
+class JavaTypeTest : public testing::Test {
+};
+
+TEST_F(JavaTypeTest, ScalarTypes) {
+  struct {
+    const char* binary_type;
+    JavaType::Type java_type;
+    const char* jni_name;
+    const char* jni_signature;
+  } scalar_types[] = {
+    {"boolean", JavaType::TypeBoolean, "Z", "Z"},
+    {"byte", JavaType::TypeByte, "B", "B"},
+    {"char", JavaType::TypeChar, "C", "C"},
+    {"short", JavaType::TypeShort, "S", "S"},
+    {"int", JavaType::TypeInt, "I", "I"},
+    {"long", JavaType::TypeLong, "J", "J"},
+    {"float", JavaType::TypeFloat, "F", "F"},
+    {"double", JavaType::TypeDouble, "D", "D"},
+    {"void", JavaType::TypeVoid, "V", "V"},
+    {"java.lang.String", JavaType::TypeString, "java/lang/String",
+     "Ljava/lang/String;"},
+    {"java.lang.Object", JavaType::TypeObject, "java/lang/Object",
+     "Ljava/lang/Object;"},
+    {"my.nested.Type$Foo", JavaType::TypeObject, "my/nested/Type$Foo",
+     "Lmy/nested/Type$Foo;"}};
+  for (size_t i = 0; i < ARRAYSIZE_UNSAFE(scalar_types); ++i) {
+    JavaType jt =
+        JavaType::CreateFromBinaryName(scalar_types[i].binary_type);
+    EXPECT_EQ(scalar_types[i].java_type, jt.type);
+    EXPECT_FALSE(jt.inner_type);
+    EXPECT_EQ(scalar_types[i].jni_name, jt.JNIName());
+    EXPECT_EQ(scalar_types[i].jni_signature, jt.JNISignature());
+  }
+}
+
+TEST_F(JavaTypeTest, ArrayTypes) {
+  JavaType array_of_boolean = JavaType::CreateFromBinaryName("[Z");
+  EXPECT_EQ(JavaType::TypeArray, array_of_boolean.type);
+  EXPECT_TRUE(array_of_boolean.inner_type);
+  EXPECT_EQ(JavaType::TypeBoolean, array_of_boolean.inner_type->type);
+  EXPECT_FALSE(array_of_boolean.inner_type->inner_type);
+  EXPECT_EQ("[Z", array_of_boolean.JNIName());
+  EXPECT_EQ("[Z", array_of_boolean.JNISignature());
+
+  JavaType array_of_boolean_2d = JavaType::CreateFromBinaryName("[[Z");
+  EXPECT_EQ(JavaType::TypeArray, array_of_boolean_2d.type);
+  EXPECT_TRUE(array_of_boolean_2d.inner_type);
+  EXPECT_EQ(JavaType::TypeArray, array_of_boolean_2d.inner_type->type);
+  EXPECT_TRUE(array_of_boolean_2d.inner_type->inner_type);
+  EXPECT_EQ(JavaType::TypeBoolean,
+            array_of_boolean_2d.inner_type->inner_type->type);
+  EXPECT_FALSE(array_of_boolean_2d.inner_type->inner_type->inner_type);
+  EXPECT_EQ("[[Z", array_of_boolean_2d.JNIName());
+  EXPECT_EQ("[[Z", array_of_boolean_2d.JNISignature());
+
+  JavaType array_of_string =
+      JavaType::CreateFromBinaryName("[Ljava.lang.String;");
+  EXPECT_EQ(JavaType::TypeArray, array_of_string.type);
+  EXPECT_TRUE(array_of_string.inner_type);
+  EXPECT_EQ(JavaType::TypeString, array_of_string.inner_type->type);
+  EXPECT_FALSE(array_of_string.inner_type->inner_type);
+  EXPECT_EQ("[Ljava/lang/String;", array_of_string.JNIName());
+  EXPECT_EQ("[Ljava/lang/String;", array_of_string.JNISignature());
+
+  JavaType array_of_object =
+      JavaType::CreateFromBinaryName("[Ljava.lang.Object;");
+  EXPECT_EQ(JavaType::TypeArray, array_of_object.type);
+  EXPECT_TRUE(array_of_object.inner_type);
+  EXPECT_EQ(JavaType::TypeObject, array_of_object.inner_type->type);
+  EXPECT_FALSE(array_of_object.inner_type->inner_type);
+  EXPECT_EQ("[Ljava/lang/Object;", array_of_object.JNIName());
+  EXPECT_EQ("[Ljava/lang/Object;", array_of_object.JNISignature());
+}
+
+}  // namespace content