Revert of [TTS] Gather surrounding text on Tap before any UX.

chrome/browser/android/contextualsearch/search_action_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 "chrome/browser/android/contextualsearch/search_action.h"
-
-#include "base/gtest_prod_util.h"
-#include "base/strings/utf_string_conversions.h"
-#include "testing/gtest/include/gtest/gtest.h"
-
-using base::string16;
-using base::UTF8ToUTF16;
-using std::pair;
-
-// Tests parts of the SearchAction class.
-// This is part of the 2016-refactoring (crbug.com/624609,
-// go/cs-refactoring-2016).
-class SearchActionTest : public testing::Test {
- public:
-  SearchActionTest() {}
-  ~SearchActionTest() override {}
-
-  // The class under test.
-  std::unique_ptr<SearchAction> search_action_;
-
- protected:
-  void SetUp() override { search_action_.reset(new SearchAction()); }
-  void TearDown() override {}
-
-  // Helper to set the context to the given sample and focus on |focus|.
-  void SetContext(std::string sample, std::string focus);
-};
-
-void SearchActionTest::SetContext(std::string sample, std::string focus) {
-  size_t offset = sample.find(focus);
-  ASSERT_NE(offset, std::string::npos);
-  search_action_->SetContext(sample, offset, offset + focus.length());
-}
-
-TEST_F(SearchActionTest, IsValidCharacterTest) {
-  EXPECT_TRUE(search_action_->IsValidCharacter('a'));
-  EXPECT_TRUE(search_action_->IsValidCharacter('A'));
-  EXPECT_TRUE(search_action_->IsValidCharacter('0'));
-
-  EXPECT_FALSE(search_action_->IsValidCharacter(','));
-  EXPECT_FALSE(search_action_->IsValidCharacter(' '));
-  EXPECT_FALSE(search_action_->IsValidCharacter('-'));
-}
-
-TEST_F(SearchActionTest, FindFocusedWordTest) {
-  // Test finding "word" within this sample string.
-  std::string sample = "Sample word, text";
-
-  // Any range inside the word but before the end should return the word.
-  search_action_->SetContext(sample, 7, 7);
-  EXPECT_EQ("word", search_action_->FindFocusedWord());
-  search_action_->SetContext(sample, 10, 10);
-  EXPECT_EQ("word", search_action_->FindFocusedWord());
-  search_action_->SetContext(sample, 7, 11);
-  EXPECT_EQ("word", search_action_->FindFocusedWord());
-
-  // A range just past the word returns an empty string.
-  search_action_->SetContext(sample, 11, 11);
-  EXPECT_EQ("", search_action_->FindFocusedWord());
-}
-
-TEST_F(SearchActionTest, SampleSurroundingsTest) {
-  std::string focus = "focus";
-  std::string sample = "987654321focus123456789";
-
-  // Sample big enough to include both ends.
-  SetContext(sample, focus);
-  EXPECT_EQ(sample, search_action_->GetSampleText(100));
-
-  // Must trim both ends, trimming 6 off each end.
-  EXPECT_EQ("321focus123", search_action_->GetSampleText(12));
-
-  // With focus near the beginning, extra is shifted to the end.
-  SetContext("321focus123456789", focus);
-  EXPECT_EQ("321focus12345", search_action_->GetSampleText(13));
-
-  // With focus near the end, extra is shifted to the beginning.
-  SetContext("987654321focus123", focus);
-  EXPECT_EQ("54321focus123", search_action_->GetSampleText(13));
-
-  // Requesting less than the focus.
-  SetContext("focus", focus);
-  EXPECT_EQ("c", search_action_->GetSampleText(1));
-}