[iOS CBCM] Add BrowserReportGeneratorIOS unit tests

Add a simple unit test case for BrowserReportGeneratorIOS class. The
test generates a basic report and checks that the values in the proto
make sense.

Bug: 1114853
Change-Id: I18dc1114c5785a4063483614b308b1f327ce1bf2
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2439785
Commit-Queue: Guillaume Jenkins <gujen@google.com>
Reviewed-by: Owen Min <zmin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#812363}

ios/chrome/browser/policy/BUILD.gn

@@ -133,6 +133,7 @@ source_set("unit_tests") {
   sources = [
     "browser_dm_token_storage_ios_unittest.mm",
     "policy_unittest.mm",
+    "reporting/browser_report_generator_ios_unittest.mm",
   ]
   deps = [
     ":policy",
@@ -146,6 +147,7 @@ source_set("unit_tests") {
     "//ios/chrome/browser:utils",
     "//ios/chrome/browser/browser_state:test_support",
     "//ios/chrome/browser/prefs",
+    "//ios/chrome/test:test_support",
     "//testing/gtest",
   ]
 }

ios/chrome/browser/policy/reporting/browser_report_generator_ios_unittest.mm

+// Copyright 2020 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 "ios/chrome/browser/policy/reporting/browser_report_generator_ios.h"
+
+#if !defined(__has_feature) || !__has_feature(objc_arc)
+#error "This file requires ARC support."
+#endif
+
+namespace em = enterprise_management;
+
+#import <Foundation/Foundation.h>
+
+#include "base/run_loop.h"
+#include "base/test/bind_test_util.h"
+#include "base/test/task_environment.h"
+#include "ios/chrome/browser/browser_state/test_chrome_browser_state.h"
+#include "ios/chrome/browser/browser_state/test_chrome_browser_state_manager.h"
+#include "ios/chrome/browser/policy/reporting/reporting_delegate_factory_ios.h"
+#include "ios/chrome/test/ios_chrome_scoped_testing_chrome_browser_state_manager.h"
+#include "ios/chrome/test/testing_application_context.h"
+#include "testing/platform_test.h"
+
+namespace enterprise_reporting {
+
+namespace {
+
+const base::FilePath kProfilePath = base::FilePath("fake/profile/default");
+
+}  // namespace
+
+class BrowserReportGeneratorIOSTest : public PlatformTest {
+ public:
+  BrowserReportGeneratorIOSTest() : generator_(&delegate_factory_) {
+    TestChromeBrowserState::Builder builder;
+    builder.SetPath(kProfilePath);
+    scoped_browser_state_manager_ =
+        std::make_unique<IOSChromeScopedTestingChromeBrowserStateManager>(
+            std::make_unique<TestChromeBrowserStateManager>(builder.Build()));
+  }
+  BrowserReportGeneratorIOSTest(const BrowserReportGeneratorIOSTest&) = delete;
+  BrowserReportGeneratorIOSTest& operator=(
+      const BrowserReportGeneratorIOSTest&) = delete;
+  ~BrowserReportGeneratorIOSTest() override = default;
+
+  void GenerateAndVerify() {
+    base::RunLoop run_loop;
+    generator_.Generate(base::BindLambdaForTesting(
+        [&run_loop](std::unique_ptr<em::BrowserReport> report) {
+          EXPECT_TRUE(report.get());
+
+          EXPECT_NE(std::string(), report->browser_version());
+          EXPECT_TRUE(report->has_channel());
+
+          EXPECT_NE(std::string(), report->executable_path());
+
+          ASSERT_EQ(1, report->chrome_user_profile_infos_size());
+          em::ChromeUserProfileInfo profile =
+              report->chrome_user_profile_infos(0);
+          EXPECT_EQ(kProfilePath.AsUTF8Unsafe(), profile.id());
+          EXPECT_EQ(kProfilePath.BaseName().AsUTF8Unsafe(), profile.name());
+
+          EXPECT_FALSE(profile.is_full_report());
+
+          EXPECT_EQ(0, report->plugins_size());
+
+          run_loop.Quit();
+        }));
+    run_loop.Run();
+  }
+
+ private:
+  base::test::TaskEnvironment task_environment_;
+
+  ReportingDelegateFactoryIOS delegate_factory_;
+  BrowserReportGenerator generator_;
+  std::unique_ptr<IOSChromeScopedTestingChromeBrowserStateManager>
+      scoped_browser_state_manager_;
+};
+
+TEST_F(BrowserReportGeneratorIOSTest, GenerateBasicReportWithProfile) {
+  GenerateAndVerify();
+}
+
+}  // namespace enterprise_reporting