ui/views/controls/prefix_selector_unittest.cc

   1 // Copyright 2013 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "ui/views/controls/prefix_selector.h"
   6
   7 #include <string>
   8
   9 #include "base/strings/string_util.h"
  10 #include "base/strings/utf_string_conversions.h"
  11 #include "ui/views/controls/prefix_delegate.h"
  12 #include "ui/views/test/views_test_base.h"
  13
  14 using base::ASCIIToUTF16;
  15
  16 namespace views {
  17
  18 class TestPrefixDelegate : public PrefixDelegate {
  19  public:
  20   TestPrefixDelegate() : selected_row_(0) {
  21     rows_.push_back(ASCIIToUTF16("aardvark"));
  22     rows_.push_back(ASCIIToUTF16("antelope"));
  23     rows_.push_back(ASCIIToUTF16("badger"));
  24     rows_.push_back(ASCIIToUTF16("gnu"));
  25   }
  26
  27   ~TestPrefixDelegate() override {}
  28
  29   int GetRowCount() override { return static_cast<int>(rows_.size()); }
  30
  31   int GetSelectedRow() override { return selected_row_; }
  32
  33   void SetSelectedRow(int row) override { selected_row_ = row; }
  34
  35   base::string16 GetTextForRow(int row) override { return rows_[row]; }
  36
  37  private:
  38   std::vector<base::string16> rows_;
  39   int selected_row_;
  40
  41   DISALLOW_COPY_AND_ASSIGN(TestPrefixDelegate);
  42 };
  43
  44 class PrefixSelectorTest : public ViewsTestBase {
  45  public:
  46   PrefixSelectorTest() {
  47     selector_.reset(new PrefixSelector(&delegate_));
  48   }
  49   ~PrefixSelectorTest() override {
  50     // Explicitly release |selector_| here which can happen before releasing
  51     // |delegate_|.
  52     selector_.reset();
  53   }
  54
  55  protected:
  56   scoped_ptr<PrefixSelector> selector_;
  57   TestPrefixDelegate delegate_;
  58
  59  private:
  60     DISALLOW_COPY_AND_ASSIGN(PrefixSelectorTest);
  61 };
  62
  63 TEST_F(PrefixSelectorTest, PrefixSelect) {
  64   selector_->InsertText(ASCIIToUTF16("an"));
  65   EXPECT_EQ(1, delegate_.GetSelectedRow());
  66
  67   // Invoke OnViewBlur() to reset time.
  68   selector_->OnViewBlur();
  69   selector_->InsertText(ASCIIToUTF16("a"));
  70   EXPECT_EQ(0, delegate_.GetSelectedRow());
  71
  72   selector_->OnViewBlur();
  73   selector_->InsertText(ASCIIToUTF16("g"));
  74   EXPECT_EQ(3, delegate_.GetSelectedRow());
  75
  76   selector_->OnViewBlur();
  77   selector_->InsertText(ASCIIToUTF16("b"));
  78   selector_->InsertText(ASCIIToUTF16("a"));
  79   EXPECT_EQ(2, delegate_.GetSelectedRow());
  80
  81   selector_->OnViewBlur();
  82   selector_->InsertText(ASCIIToUTF16("\t"));
  83   selector_->InsertText(ASCIIToUTF16("b"));
  84   selector_->InsertText(ASCIIToUTF16("a"));
  85   EXPECT_EQ(2, delegate_.GetSelectedRow());
  86 }
  87
  88 }  // namespace views