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
TEST(EditDistanceTest,TestEmpty)19 TEST(EditDistanceTest, TestEmpty) {
20 EXPECT_EQ(5, EditDistance("", "ninja"));
21 EXPECT_EQ(5, EditDistance("ninja", ""));
22 EXPECT_EQ(0, EditDistance("", ""));
23 }
24
TEST(EditDistanceTest,TestMaxDistance)25 TEST(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
TEST(EditDistanceTest,TestAllowReplacements)34 TEST(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
TEST(EditDistanceTest,TestBasics)44 TEST(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