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author | Nico Weber <thakis@chromium.org> | 2011-11-10 20:58:00 (GMT) |
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committer | Evan Martin <martine@danga.com> | 2011-11-13 20:17:53 (GMT) |
commit | d0a3c5c3735c52aa2fd4ecfb0d2c84dc9ebbb45a (patch) | |
tree | dcc66684f8b5b19f902e731034c69a7c7b07ca93 /src/edit_distance_test.cc | |
parent | 04097eb434d96d9c6e6aefd83c9c9d8970c2e84e (diff) | |
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Add a EditDistance() function based on the one in llvm/lib/Support/StringRef.cpp.
Diffstat (limited to 'src/edit_distance_test.cc')
-rw-r--r-- | src/edit_distance_test.cc | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/src/edit_distance_test.cc b/src/edit_distance_test.cc new file mode 100644 index 0000000..a4c0486 --- /dev/null +++ b/src/edit_distance_test.cc @@ -0,0 +1,49 @@ +// Copyright 2011 Google Inc. All Rights Reserved. +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +#include "edit_distance.h" + +#include "string_piece.h" +#include "test.h" + +TEST(EditDistanceTest, TestEmpty) { + EXPECT_EQ(5, EditDistance("", "ninja")); + EXPECT_EQ(5, EditDistance("ninja", "")); + EXPECT_EQ(0, EditDistance("", "")); +} + +TEST(EditDistanceTest, TestMaxDistance) { + const bool allow_replacements = true; + for (int max_distance = 1; max_distance < 7; ++max_distance) { + EXPECT_EQ(max_distance + 1, + EditDistance("abcdefghijklmnop", "ponmlkjihgfedcba", + allow_replacements, max_distance)); + } +} + +TEST(EditDistanceTest, TestAllowReplacements) { + bool allow_replacements = true; + EXPECT_EQ(1, EditDistance("ninja", "njnja", allow_replacements)); + EXPECT_EQ(1, EditDistance("njnja", "ninja", allow_replacements)); + + allow_replacements = false; + EXPECT_EQ(2, EditDistance("ninja", "njnja", allow_replacements)); + EXPECT_EQ(2, EditDistance("njnja", "ninja", allow_replacements)); +} + +TEST(EditDistanceTest, TestBasics) { + EXPECT_EQ(0, EditDistance("browser_tests", "browser_tests")); + EXPECT_EQ(1, EditDistance("browser_test", "browser_tests")); + EXPECT_EQ(1, EditDistance("browser_tests", "browser_test")); +} |