Move part of browsing data counter text util method to components

components/browsing_data/core/browsing_data_utils_unittest.cc

+// Copyright 2016 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/browsing_data/core/browsing_data_utils.h"
+
+#include <string>
+
+#include "base/message_loop/message_loop.h"
+#include "base/strings/stringprintf.h"
+#include "base/strings/utf_string_conversions.h"
+#include "base/threading/thread_task_runner_handle.h"
+#include "components/autofill/core/browser/webdata/autofill_webdata_service.h"
+#include "components/browsing_data/core/counters/autofill_counter.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+namespace {
+
+class FakeWebDataService : public autofill::AutofillWebDataService {
+ public:
+  FakeWebDataService()
+      : AutofillWebDataService(base::ThreadTaskRunnerHandle::Get(),
+                               base::ThreadTaskRunnerHandle::Get()) {}
+
+ protected:
+  ~FakeWebDataService() override {}
+};
+
+}  // namespace
+
+class BrowsingDataUtilsTest : public testing::Test {
+ public:
+  BrowsingDataUtilsTest() {}
+  ~BrowsingDataUtilsTest() override {}
+
+ private:
+  base::MessageLoop loop_;
+};
+
+// Tests the complex output of the Autofill counter.
+TEST_F(BrowsingDataUtilsTest, AutofillCounterResult) {
+  browsing_data::AutofillCounter counter(
+      scoped_refptr<FakeWebDataService>(new FakeWebDataService()));
+
+  // Test all configurations of zero and nonzero partial results for datatypes.
+  // Test singular and plural for each datatype.
+  const struct TestCase {
+    int num_credit_cards;
+    int num_addresses;
+    int num_suggestions;
+    std::string expected_output;
+  } kTestCases[] = {
+      {0, 0, 0, "none"},
+      {1, 0, 0, "1 credit card"},
+      {0, 5, 0, "5 addresses"},
+      {0, 0, 1, "1 suggestion"},
+      {0, 0, 2, "2 suggestions"},
+      {4, 7, 0, "4 credit cards, 7 addresses"},
+      {3, 0, 9, "3 credit cards, 9 other suggestions"},
+      {0, 1, 1, "1 address, 1 other suggestion"},
+      {9, 6, 3, "9 credit cards, 6 addresses, 3 others"},
+      {4, 2, 1, "4 credit cards, 2 addresses, 1 other"},
+  };
+
+  for (const TestCase& test_case : kTestCases) {
+    browsing_data::AutofillCounter::AutofillResult result(
+        &counter, test_case.num_suggestions, test_case.num_credit_cards,
+        test_case.num_addresses);
+
+    SCOPED_TRACE(
+        base::StringPrintf("Test params: %d credit card(s), "
+                           "%d address(es), %d suggestion(s).",
+                           test_case.num_credit_cards, test_case.num_addresses,
+                           test_case.num_suggestions));
+
+    base::string16 output = browsing_data::GetCounterTextFromResult(&result);
+    EXPECT_EQ(output, base::ASCIIToUTF16(test_case.expected_output));
+  }
+}