[Payment Request] Populates region field if region code/name is valid.

ios/chrome/browser/ui/payments/region_data_loader_unittest.mm

 // Copyright 2017 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.
 
 #import "ios/chrome/browser/ui/payments/region_data_loader.h"
 
 #include <string>
 #include <utility>
 #include <vector>
 
 #include "base/logging.h"
 #include "base/strings/sys_string_conversions.h"
 #include "components/autofill/core/browser/test_region_data_loader.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "testing/platform_test.h"
 #include "third_party/ocmock/OCMock/OCMock.h"
 #include "third_party/ocmock/gtest_support.h"
 
 #if !defined(__has_feature) || !__has_feature(objc_arc)
 #error "This file requires ARC support."
 #endif
 
 namespace {
-const char kQuebec[] = "QC";
-const char kOntario[] = "ON";
+const char kQuebecCode[] = "QC";
+const char kOntarioCode[] = "ON";
+const char kQuebec[] = "Quebec";
+const char kOntario[] = "Ontario";
 }  // namespace
 
 class PaymentRequestRegionDataLoaderTest : public PlatformTest {
  protected:
   PaymentRequestRegionDataLoaderTest() {}
   ~PaymentRequestRegionDataLoaderTest() override {}
 
   autofill::TestRegionDataLoader autofill_region_data_loader_;
 };
 
 // Tests that the two regions returned by the source are correctly returned.
 TEST_F(PaymentRequestRegionDataLoaderTest, SourceSuccess) {
   // Mock the consumer.
   id consumer =
       [OCMockObject mockForProtocol:@protocol(RegionDataLoaderConsumer)];
-  [[consumer expect] regionDataLoaderDidSucceedWithRegions:@[
-    base::SysUTF8ToNSString(kQuebec), base::SysUTF8ToNSString(kOntario)
-  ]];
+  [[consumer expect] regionDataLoaderDidSucceedWithRegions:@{
+    base::SysUTF8ToNSString(kQuebecCode) : base::SysUTF8ToNSString(kQuebec),
+    base::SysUTF8ToNSString(kOntarioCode) : base::SysUTF8ToNSString(kOntario)
+  }];
 
   RegionDataLoader region_data_loader(consumer);
   region_data_loader.LoadRegionData("some country",
                                     &autofill_region_data_loader_);
 
   std::vector<std::pair<std::string, std::string>> regions;
-  regions.push_back(std::make_pair(kQuebec, "Quebec"));
-  regions.push_back(std::make_pair(kOntario, "Ontario"));
+  regions.push_back(std::make_pair(kQuebecCode, kQuebec));
+  regions.push_back(std::make_pair(kOntarioCode, kOntario));
   autofill_region_data_loader_.SendAsynchronousData(regions);
 
   EXPECT_OCMOCK_VERIFY(consumer);
 }
 
 // Tests that the source emptiness/failure is properly handled.
 TEST_F(PaymentRequestRegionDataLoaderTest, SourceFailure) {
   // Mock the consumer.
   id consumer =
       [OCMockObject mockForProtocol:@protocol(RegionDataLoaderConsumer)];
-  [[consumer expect] regionDataLoaderDidSucceedWithRegions:@[]];
+  [[consumer expect] regionDataLoaderDidSucceedWithRegions:@{}];
 
   RegionDataLoader region_data_loader(consumer);
   region_data_loader.LoadRegionData("some country",
                                     &autofill_region_data_loader_);
 
   autofill_region_data_loader_.SendAsynchronousData(
       std::vector<std::pair<std::string, std::string>>());
 
   EXPECT_OCMOCK_VERIFY(consumer);
 }