Revert of Removes Native App Launcher functionality.

ios/chrome/browser/tabs/tab_unittest.mm

Index: ios/chrome/browser/tabs/tab_unittest.mm
diff --git a/ios/chrome/browser/tabs/tab_unittest.mm b/ios/chrome/browser/tabs/tab_unittest.mm
index 75e89edce72453f7e2d7daf2ed7cd2e967f5644f..dae23a9d52fe66a81e9521daa6149543544cae26 100644
--- a/ios/chrome/browser/tabs/tab_unittest.mm
+++ b/ios/chrome/browser/tabs/tab_unittest.mm
@@ -411,4 +411,147 @@
   EXPECT_NSEQ(@"Document.pdf", [[tab_ openInController] suggestedFilename]);
 }
 
+// A separate test fixture is used to test opening external URLs using Google
+// App Launcher. In any of the tests for this feature, scenarios have to be
+// tested with the regular ChromeBrowserState AND the incognito
+// ChromeBrowserState.
+// In Incognito, -urlTriggersNativeAppLaunch:sourceURL should always return NO.
+class TabOpenAppTest : public TabTest {
+ protected:
+  // Tests that calling |urlTriggersNativeAppLaunch:sourceURL:linkClicked| calls
+  // |openURL:| the expected number of times. |return_value| is the value to be
+  // returned from |openURL:|. |expected_result| is the value that is checked
+  // for from |urlTriggersNativeAppLaunch:sourceURL:linkClicked|.
+  void TestOpenNativeAppURL(const GURL& url,
+                            BOOL return_value,
+                            NSUInteger expected_tab_call_count,
+                            BOOL expected_result) {
+    ExpectWithMockedExternalAppLauncherOpenURL(
+        return_value, expected_tab_call_count, ^{
+          EXPECT_EQ(expected_result,
+                    [tab_ urlTriggersNativeAppLaunch:url
+                                           sourceURL:GURL("http://google.com")
+                                         linkClicked:YES]);
+        });
+  }
+
+  // Stubs out |openURL:| and checks how many times it was called.
+  void ExpectWithMockedExternalAppLauncherOpenURL(
+      BOOL return_value,
+      NSUInteger expected_tab_call_count,
+      ProceduralBlock expectation_block) {
+    __block NSUInteger counter = 0;
+    [mock_external_app_launcher_
+                  onSelector:@selector(openURL:linkClicked:)
+        callBlockExpectation:(id) ^ (const GURL& url, BOOL linkClicked) {
+          ++counter;
+          return return_value;
+        }];
+    expectation_block();
+    EXPECT_EQ(expected_tab_call_count, counter);
+    [mock_external_app_launcher_
+        removeBlockExpectationOnSelector:@selector(openURL:linkClicked:)];
+  }
+};
+
+// A version of TabOpenAppTests customized to use the off-the-record browser
+// state (instead of the non-incognito one).
+class TabOpenAppOffTheRecordTest : public TabOpenAppTest {
+ private:
+  bool UseOffTheRecordBrowserState() const override { return true; }
+};
+
+// Tests the opening of matching native apps.
+TEST_F(TabOpenAppTest, testDummyURL) {
+  EXPECT_FALSE([tab_ browserState]->IsOffTheRecord());
+
+  GURL no_native_app_url("dummy string");
+  TestOpenNativeAppURL(no_native_app_url, NO, 0, NO);
+}
+
+TEST_F(TabOpenAppTest, testURL) {
+  EXPECT_FALSE([tab_ browserState]->IsOffTheRecord());
+
+  GURL testURL("http://www.youtube.com/");
+  // Fake metadata object to enable and disable autoopenlinks for testURL.
+  base::scoped_nsobject<FakeNativeAppMetadata> metadata(
+      [[FakeNativeAppMetadata alloc] init]);
+  IOSChromeScopedTestingChromeBrowserProvider provider(
+      base::MakeUnique<FakeChromeBrowserProvider>(metadata));
+  // Turn auto open on.
+  int expectedCallCount = 1;
+  [metadata setShouldAutoOpenLinks:YES];
+  TestOpenNativeAppURL(testURL, YES, expectedCallCount, YES);
+  TestOpenNativeAppURL(testURL, NO, expectedCallCount, NO);
+
+  // Turn auto open off.
+  expectedCallCount = 0;
+  [metadata setShouldAutoOpenLinks:NO];
+  TestOpenNativeAppURL(testURL, NO, expectedCallCount, NO);
+}
+
+// TODO(crbug.com/330189): This test fails if Google Maps is installed (usually
+// on device).
+TEST_F(TabOpenAppTest, DISABLED_testResetShouldAutoOpenOnFailure) {
+  EXPECT_FALSE([tab_ browserState]->IsOffTheRecord());
+
+  // With a regular profile.
+  GURL testURL("http://maps.google.com/");
+  // Fake metadata object
+  base::scoped_nsobject<FakeNativeAppMetadata> metadata(
+      [[FakeNativeAppMetadata alloc] init]);
+
+  // Turn auto open on.
+  [metadata setShouldAutoOpenLinks:YES];
+  int expectedCallCount = 2;
+  TestOpenNativeAppURL(testURL, NO, expectedCallCount, NO);
+  EXPECT_FALSE([metadata shouldAutoOpenLinks]);
+}
+
+// Tests the opening of matching native apps with off-the-record browser state.
+TEST_F(TabOpenAppOffTheRecordTest, testDummyURL) {
+  EXPECT_TRUE([tab_ browserState]->IsOffTheRecord());
+
+  GURL no_native_app_url("dummy string");
+  TestOpenNativeAppURL(no_native_app_url, NO, 0, NO);
+}
+
+TEST_F(TabOpenAppOffTheRecordTest, testURL) {
+  EXPECT_TRUE([tab_ browserState]->IsOffTheRecord());
+
+  // With a regular chrome browser state.
+  GURL testURL("http://www.youtube.com/");
+  // Mock metadata object to enable and disable autoopenlinks for testURL.
+  base::scoped_nsobject<FakeNativeAppMetadata> metadata(
+      [[FakeNativeAppMetadata alloc] init]);
+  IOSChromeScopedTestingChromeBrowserProvider provider(
+      base::MakeUnique<FakeChromeBrowserProvider>(metadata));
+
+  // Turn auto open on.
+  [metadata setShouldAutoOpenLinks:YES];
+  TestOpenNativeAppURL(testURL, NO, 0, NO);
+
+  // Turn auto open off.
+  [metadata setShouldAutoOpenLinks:NO];
+  TestOpenNativeAppURL(testURL, NO, 0, NO);
+}
+
+// TODO(crbug.com/330189): This test fails if Google Maps is installed (usually
+// on device).
+TEST_F(TabOpenAppOffTheRecordTest, DISABLED_testResetShouldAutoOpenOnFailure) {
+  EXPECT_TRUE([tab_ browserState]->IsOffTheRecord());
+
+  // With a regular profile.
+  GURL testURL("http://maps.google.com/");
+  // Fake metadata object.
+  base::scoped_nsobject<FakeNativeAppMetadata> metadata(
+      [[FakeNativeAppMetadata alloc] init]);
+
+  // Turn auto open on.
+  [metadata setShouldAutoOpenLinks:YES];
+  int expectedCallCount = 2;
+  TestOpenNativeAppURL(testURL, NO, expectedCallCount, NO);
+  EXPECT_FALSE([metadata shouldAutoOpenLinks]);
+}
+
 }  // namespace