Add mojo struct traits for GURL so that it can be sent over mojoms.

url/mojo/mojo_gurl_unittest.cc

+// 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.
+
+#include "base/logging.h"
+#include "base/macros.h"
+#include "mojo/public/cpp/bindings/binding.h"
+#include "testing/gtest/include/gtest/gtest.h"
+#include "url/mojo/url_test.mojom.h"
+
+namespace url {
+
+class UrlTestImpl : public mojom::UrlTest {
+ public:
+  explicit UrlTestImpl(mojo::InterfaceRequest<url::mojom::UrlTest> request)
+      : binding_(this, std::move(request)) {
+  }
+
+  // UrlTest:
+  void Bounce(const GURL& in, const BounceCallback& callback) override {
+    callback.Run(in);
+  }
+
+ private:
+  mojo::Binding<UrlTest> binding_;
+};
+
+// Mojo version of chrome IPC test in
+// content/common/common_param_traits_unittest.cc
+TEST(MojoGURLTest, Basic) {
+  base::MessageLoop message_loop;
+
+  mojom::UrlTestPtr proxy;
+  UrlTestImpl impl(GetProxy(&proxy));
+
+  const char* serialize_cases[] = {
+    "http://www.google.com/",
+    "http://user:pass@host.com:888/foo;bar?baz#nop",
+  };
+
+  for (size_t i = 0; i < arraysize(serialize_cases); i++) {
+    GURL input(serialize_cases[i]);
+    GURL output;
+    EXPECT_TRUE(proxy->Bounce(input, &output));
+
+    // We want to test each component individually to make sure its range was
+    // correctly serialized and deserialized, not just the spec.
+    EXPECT_EQ(input.possibly_invalid_spec(), output.possibly_invalid_spec());
+    EXPECT_EQ(input.is_valid(), output.is_valid());
+    EXPECT_EQ(input.scheme(), output.scheme());
+    EXPECT_EQ(input.username(), output.username());
+    EXPECT_EQ(input.password(), output.password());
+    EXPECT_EQ(input.host(), output.host());
+    EXPECT_EQ(input.port(), output.port());
+    EXPECT_EQ(input.path(), output.path());
+    EXPECT_EQ(input.query(), output.query());
+    EXPECT_EQ(input.ref(), output.ref());
+  }
+
+  // Test an excessively long GURL.
+  {
+    const std::string url = std::string("http://example.org/").append(
+        mojo::kMaxURLChars + 1, 'a');
+    GURL input(url.c_str());
+    GURL output;
+    EXPECT_TRUE(proxy->Bounce(input, &output));
+    EXPECT_TRUE(output.is_empty());
+  }
+}
+
+}  // namespace url