1// Copyright 2011 Google Inc. All Rights Reserved.
2//
3// Licensed under the Apache License, Version 2.0 (the "License");
4// you may not use this file except in compliance with the License.
5// You may obtain a copy of the License at
6//
7// http://www.apache.org/licenses/LICENSE-2.0
8//
9// Unless required by applicable law or agreed to in writing, software
10// distributed under the License is distributed on an "AS IS" BASIS,
11// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12// See the License for the specific language governing permissions and
13// limitations under the License.
14
15#include "edit_distance.h"
16
17#include "test.h"
18
19TEST(EditDistanceTest, TestEmpty) {
20 EXPECT_EQ(5, EditDistance("", "ninja"));
21 EXPECT_EQ(5, EditDistance("ninja", ""));
22 EXPECT_EQ(0, EditDistance("", ""));
23}
24
25TEST(EditDistanceTest, TestMaxDistance) {
26 const bool allow_replacements = true;
27 for (int max_distance = 1; max_distance < 7; ++max_distance) {
28 EXPECT_EQ(max_distance + 1,
29 EditDistance("abcdefghijklmnop", "ponmlkjihgfedcba",
30 allow_replacements, max_distance));
31 }
32}
33
34TEST(EditDistanceTest, TestAllowReplacements) {
35 bool allow_replacements = true;
36 EXPECT_EQ(1, EditDistance("ninja", "njnja", allow_replacements));
37 EXPECT_EQ(1, EditDistance("njnja", "ninja", allow_replacements));
38
39 allow_replacements = false;
40 EXPECT_EQ(2, EditDistance("ninja", "njnja", allow_replacements));
41 EXPECT_EQ(2, EditDistance("njnja", "ninja", allow_replacements));
42}
43
44TEST(EditDistanceTest, TestBasics) {
45 EXPECT_EQ(0, EditDistance("browser_tests", "browser_tests"));
46 EXPECT_EQ(1, EditDistance("browser_test", "browser_tests"));
47 EXPECT_EQ(1, EditDistance("browser_tests", "browser_test"));
48}
49