Open |current_url| in Chrome when |previous_url| is empty

chrome/browser/chromeos/arc/arc_navigation_throttle_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 "chrome/browser/chromeos/arc/arc_navigation_throttle.h"
+#include "testing/gtest/include/gtest/gtest.h"
+#include "url/gurl.h"
+
+namespace arc {
+
+TEST(ArcNavigationThrottleTest, TestShouldOverrideUrlLoading) {
+  // A navigation within the same domain shouldn't be overridden.
+  EXPECT_FALSE(ArcNavigationThrottle::ShouldOverrideUrlLoadingForTesting(
+      GURL("http://google.com"), GURL("http://google.com/")));
+  EXPECT_FALSE(ArcNavigationThrottle::ShouldOverrideUrlLoadingForTesting(
+      GURL("http://google.com"), GURL("http://a.google.com/")));
+  EXPECT_FALSE(ArcNavigationThrottle::ShouldOverrideUrlLoadingForTesting(
+      GURL("http://a.google.com"), GURL("http://google.com/")));
+  EXPECT_FALSE(ArcNavigationThrottle::ShouldOverrideUrlLoadingForTesting(
+      GURL("http://a.google.com"), GURL("http://b.google.com/")));
+  EXPECT_FALSE(ArcNavigationThrottle::ShouldOverrideUrlLoadingForTesting(
+      GURL("http://a.google.com"), GURL("http://b.c.google.com/")));
+  EXPECT_FALSE(ArcNavigationThrottle::ShouldOverrideUrlLoadingForTesting(
+      GURL("http://a.b.google.com"), GURL("http://c.google.com/")));
+
+  // If either of two paramters is empty, the function should return false.
+  EXPECT_FALSE(ArcNavigationThrottle::ShouldOverrideUrlLoadingForTesting(
+      GURL(), GURL("http://a.google.com/")));
+  EXPECT_FALSE(ArcNavigationThrottle::ShouldOverrideUrlLoadingForTesting(
+      GURL("http://a.google.com/"), GURL()));
+  EXPECT_FALSE(ArcNavigationThrottle::ShouldOverrideUrlLoadingForTesting(
+      GURL(), GURL()));
+
+  // A navigation not within the same domain can be overridden.
+  EXPECT_TRUE(ArcNavigationThrottle::ShouldOverrideUrlLoadingForTesting(
+      GURL("http://www.google.com"), GURL("http://www.not-google.com/")));
+  EXPECT_TRUE(ArcNavigationThrottle::ShouldOverrideUrlLoadingForTesting(
+      GURL("http://www.not-google.com"), GURL("http://www.google.com/")));
+}
+
+}  // namespace arc