[iOS] Upstream iOS geolocation code

ios/chrome/browser/geolocation/location_manager_unittest.mm

+// 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 "base/mac/scoped_nsobject.h"
+#import "ios/chrome/browser/geolocation/CLLocation+OmniboxGeolocation.h"
+#import "ios/chrome/browser/geolocation/location_manager+Testing.h"
+#import "ios/chrome/browser/geolocation/location_manager.h"

[sdefresne, 2015/04/28 08:34:39]

nit: shouldn't this #import be above the others (since this is the base header
file of the tested functionality)

+#import "ios/public/provider/chrome/browser/geolocation_updater_provider.h"
+#include "testing/gtest/include/gtest/gtest.h"
+#include "testing/gtest_mac.h"
+#include "testing/platform_test.h"
+#import "third_party/ocmock/OCMock/OCMock.h"
+#import "third_party/ocmock/gtest_support.h"
+
+namespace {
+
+class LocationManagerTest : public PlatformTest {
+ public:
+  LocationManagerTest() {}
+
+ protected:
+  void SetUp() override {
+    PlatformTest::SetUp();
+
+    mock_geolocation_updater_.reset(
+        [[OCMockObject mockForProtocol:@protocol(GeolocationUpdater)] retain]);
+
+    // Set up LocationManager with a mock GeolocationUpdater.
+    location_manager_.reset([[LocationManager alloc] init]);
+    [location_manager_ setGeolocationUpdater:mock_geolocation_updater_.get()];
+  }
+
+  void TearDown() override {
+    [location_manager_ setGeolocationUpdater:nil];
+
+    PlatformTest::TearDown();
+  }
+
+  base::scoped_nsobject<id> mock_geolocation_updater_;
+  base::scoped_nsobject<LocationManager> location_manager_;
+};
+
+// Verifies that -[LocationManager startUpdatingLocation] calls
+// -[GeolocationUpdater setEnabled:] when GeolocationUpdater does not yet have
+// a current location.
+TEST_F(LocationManagerTest, StartUpdatingLocationNilCurrentLocation) {
+  [[[mock_geolocation_updater_ expect] andReturn:nil] currentLocation];
+
+  // Also expect the call to -[GeolocationUpdater isEnabled];
+  BOOL no = NO;
+  [[[mock_geolocation_updater_ expect]
+      andReturnValue:OCMOCK_VALUE(no)] isEnabled];
+  [[mock_geolocation_updater_ expect] requestWhenInUseAuthorization];
+  [[mock_geolocation_updater_ expect] setEnabled:YES];
+
+  [location_manager_ startUpdatingLocation];
+  EXPECT_OCMOCK_VERIFY(mock_geolocation_updater_.get());
+}
+
+// Verifies that -[LocationManager startUpdatingLocation] calls
+// -[GeolocationUpdater setEnabled:] when GeolocationUpdater
+// |currentLocation| is stale.
+TEST_F(LocationManagerTest, StartUpdatingLocationStaleCurrentLocation) {
+  // Set up to return a stale mock CLLocation from -[GeolocationUpdater
+  // currentLocation].
+  base::scoped_nsobject<id> mock_location(
+      [[OCMockObject mockForClass:[CLLocation class]] retain]);
+  BOOL yes = YES;
+  [[[mock_location expect] andReturnValue:OCMOCK_VALUE(yes)] cr_shouldRefresh];
+
+  [[[mock_geolocation_updater_ expect]
+      andReturn:mock_location.get()] currentLocation];
+
+  // Also expect the call to -[GeolocationUpdater isEnabled];
+  BOOL no = NO;
+  [[[mock_geolocation_updater_ expect]
+      andReturnValue:OCMOCK_VALUE(no)] isEnabled];
+  [[mock_geolocation_updater_ expect] requestWhenInUseAuthorization];
+  [[mock_geolocation_updater_ expect] setEnabled:YES];
+
+  [location_manager_ startUpdatingLocation];
+  EXPECT_OCMOCK_VERIFY(mock_geolocation_updater_.get());
+  EXPECT_OCMOCK_VERIFY(mock_location.get());
+}
+
+// Verifies that -[LocationManager startUpdatingLocation] does not call
+// -[GeolocationUpdater setEnabled:] when GeolocationUpdater's
+// |currentLocation| is fresh.
+TEST_F(LocationManagerTest, StartUpdatingLocationFreshCurrentLocation) {
+  // Set up to return a fresh mock CLLocation from -[GeolocationUpdater
+  // currentLocation].
+  base::scoped_nsobject<id> mock_location(
+      [[OCMockObject mockForClass:[CLLocation class]] retain]);
+  BOOL no = NO;
+  [[[mock_location expect] andReturnValue:OCMOCK_VALUE(no)] cr_shouldRefresh];
+
+  [[[mock_geolocation_updater_ expect]
+      andReturn:mock_location.get()] currentLocation];
+
+  [location_manager_ startUpdatingLocation];
+  EXPECT_OCMOCK_VERIFY(mock_geolocation_updater_.get());
+  EXPECT_OCMOCK_VERIFY(mock_location.get());
+}
+
+}  // namespace