Support new --arc-availability flag.

components/arc/arc_util_unittest.cc

 // 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.
 
 #include "components/arc/arc_util.h"
 
 #include <memory>
 
 #include "base/command_line.h"
 #include "base/macros.h"
@@ skipping 18 matching lines @@
   }
   ~ScopedArcFeature() = default;
 
  private:
   base::test::ScopedFeatureList feature_list;
   DISALLOW_COPY_AND_ASSIGN(ScopedArcFeature);
 };
 
 using ArcUtilTest = testing::Test;
 
+TEST_F(ArcUtilTest, IsArcAvailable_None) {
+  auto* command_line = base::CommandLine::ForCurrentProcess();
+
+  command_line->InitFromArgv({"", "--arc-availability=none"});
+  EXPECT_FALSE(IsArcAvailable());
+
+  // If --arc-availability flag is set to "none", even if Finch experiment is
+  // turned on, ARC cannot be used.
+  {
+    ScopedArcFeature feature(true);
+    EXPECT_FALSE(IsArcAvailable());
+  }
+}
+
 // Test --arc-available with EnableARC feature combination.
 TEST_F(ArcUtilTest, IsArcAvailable_Installed) {
   auto* command_line = base::CommandLine::ForCurrentProcess();
 
   // If ARC is not installed, IsArcAvailable() should return false,
   // regardless of EnableARC feature.
   command_line->InitFromArgv({""});
 
   // Not available, by-default.
   EXPECT_FALSE(IsArcAvailable());
@@ skipping 15 matching lines @@
   EXPECT_FALSE(IsArcAvailable());
 
   {
     ScopedArcFeature feature(true);
     EXPECT_TRUE(IsArcAvailable());
   }
   {
     ScopedArcFeature feature(false);
     EXPECT_FALSE(IsArcAvailable());
   }
+
+  // If ARC is installed, IsArcAvailable() should return true when EnableARC
+  // feature is set.
+  command_line->InitFromArgv({"", "--arc-availability=installed"});
+
+  // Not available, by-default, too.
+  EXPECT_FALSE(IsArcAvailable());
+
+  {
+    ScopedArcFeature feature(true);
+    EXPECT_TRUE(IsArcAvailable());
+  }
+  {
+    ScopedArcFeature feature(false);
+    EXPECT_FALSE(IsArcAvailable());
+  }
 }
 
-TEST_F(ArcUtilTest, IsArcAvailable_OfficialSupport) {
+TEST_F(ArcUtilTest, IsArcAvailable_OfficiallySupported) {
   // Regardless of FeatureList, IsArcAvailable() should return true.
   auto* command_line = base::CommandLine::ForCurrentProcess();
   command_line->InitFromArgv({"", "--enable-arc"});
   EXPECT_TRUE(IsArcAvailable());
+
+  command_line->InitFromArgv({"", "--arc-availability=officially-supported"});
+  EXPECT_TRUE(IsArcAvailable());
 }
 
 // TODO(hidehiko): Add test for IsArcKioskMode().
 // It depends on UserManager, but a utility to inject fake instance is
 // available only in chrome/. To use it in components/, refactoring is needed.
 
 TEST_F(ArcUtilTest, IsArcOptInVerificationDisabled) {
   auto* command_line = base::CommandLine::ForCurrentProcess();
   command_line->InitFromArgv({""});
   EXPECT_FALSE(IsArcOptInVerificationDisabled());
 
   command_line->InitFromArgv({"", "--disable-arc-opt-in-verification"});
   EXPECT_TRUE(IsArcOptInVerificationDisabled());
 }
 
 }  // namespace
 }  // namespace arc