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      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   virtual ~TestPrefixDelegate() {}
     28 
     29   virtual int GetRowCount() OVERRIDE {
     30     return static_cast<int>(rows_.size());
     31   }
     32 
     33   virtual int GetSelectedRow() OVERRIDE {
     34     return selected_row_;
     35   }
     36 
     37   virtual void SetSelectedRow(int row) OVERRIDE {
     38     selected_row_ = row;
     39   }
     40 
     41   virtual base::string16 GetTextForRow(int row) OVERRIDE {
     42     return rows_[row];
     43   }
     44 
     45  private:
     46   std::vector<base::string16> rows_;
     47   int selected_row_;
     48 
     49   DISALLOW_COPY_AND_ASSIGN(TestPrefixDelegate);
     50 };
     51 
     52 class PrefixSelectorTest : public ViewsTestBase {
     53  public:
     54   PrefixSelectorTest() {
     55     selector_.reset(new PrefixSelector(&delegate_));
     56   }
     57 
     58  protected:
     59   scoped_ptr<PrefixSelector> selector_;
     60   TestPrefixDelegate delegate_;
     61 
     62  private:
     63     DISALLOW_COPY_AND_ASSIGN(PrefixSelectorTest);
     64 };
     65 
     66 TEST_F(PrefixSelectorTest, PrefixSelect) {
     67   selector_->InsertText(ASCIIToUTF16("an"));
     68   EXPECT_EQ(1, delegate_.GetSelectedRow());
     69 
     70   // Invoke OnViewBlur() to reset time.
     71   selector_->OnViewBlur();
     72   selector_->InsertText(ASCIIToUTF16("a"));
     73   EXPECT_EQ(0, delegate_.GetSelectedRow());
     74 
     75   selector_->OnViewBlur();
     76   selector_->InsertText(ASCIIToUTF16("g"));
     77   EXPECT_EQ(3, delegate_.GetSelectedRow());
     78 
     79   selector_->OnViewBlur();
     80   selector_->InsertText(ASCIIToUTF16("b"));
     81   selector_->InsertText(ASCIIToUTF16("a"));
     82   EXPECT_EQ(2, delegate_.GetSelectedRow());
     83 
     84   selector_->OnViewBlur();
     85   selector_->InsertText(ASCIIToUTF16("\t"));
     86   selector_->InsertText(ASCIIToUTF16("b"));
     87   selector_->InsertText(ASCIIToUTF16("a"));
     88   EXPECT_EQ(2, delegate_.GetSelectedRow());
     89 }
     90 
     91 }  // namespace views
     92