| // Copyright 2014 The Bazel Authors. 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. |
| package com.google.devtools.build.lib.util; |
| |
| import static com.google.common.truth.Truth.assertThat; |
| import static com.google.devtools.build.lib.util.StringUtil.capitalize; |
| import static com.google.devtools.build.lib.util.StringUtil.emptyToNull; |
| import static com.google.devtools.build.lib.util.StringUtil.indent; |
| import static com.google.devtools.build.lib.util.StringUtil.joinEnglishList; |
| import static com.google.devtools.build.lib.util.StringUtil.stripSuffix; |
| |
| import com.google.common.collect.ImmutableList; |
| import java.util.Arrays; |
| import java.util.Collections; |
| import org.junit.Test; |
| import org.junit.runner.RunWith; |
| import org.junit.runners.JUnit4; |
| |
| /** A test for {@link StringUtil}. */ |
| @RunWith(JUnit4.class) |
| public class StringUtilTest { |
| |
| @Test |
| public void testJoinEnglishList() throws Exception { |
| assertThat(joinEnglishList(Collections.emptyList())).isEqualTo("nothing"); |
| assertThat(joinEnglishList(Arrays.asList("one"))).isEqualTo("one"); |
| assertThat(joinEnglishList(Arrays.asList("one", "two"))).isEqualTo("one or two"); |
| assertThat(joinEnglishList(Arrays.asList("one", "two"), "and")).isEqualTo("one and two"); |
| assertThat(joinEnglishList(Arrays.asList("one", "two", "three"))) |
| .isEqualTo("one, two or three"); |
| assertThat(joinEnglishList(Arrays.asList("one", "two", "three"), "and")) |
| .isEqualTo("one, two and three"); |
| assertThat(joinEnglishList(Arrays.asList("one", "two", "three"), "and", "'")) |
| .isEqualTo("'one', 'two' and 'three'"); |
| } |
| |
| @Test |
| public void listItemsWithLimit() throws Exception { |
| assertThat( |
| StringUtil.listItemsWithLimit( |
| new StringBuilder("begin/"), 3, ImmutableList.of("a", "b", "c")) |
| .append("/end") |
| .toString()) |
| .isEqualTo("begin/a, b, c/end"); |
| |
| assertThat( |
| StringUtil.listItemsWithLimit( |
| new StringBuilder("begin/"), 3, ImmutableList.of("a", "b", "c", "d", "e")) |
| .append("/end") |
| .toString()) |
| .isEqualTo("begin/a, b, c ...(omitting 2 more item(s))/end"); |
| } |
| |
| @Test |
| public void testIndent() throws Exception { |
| assertThat(indent("", 0)).isEmpty(); |
| assertThat(indent("", 1)).isEmpty(); |
| assertThat(indent("a", 1)).isEqualTo("a"); |
| assertThat(indent("\na", 2)).isEqualTo("\n a"); |
| assertThat(indent("a\nb", 2)).isEqualTo("a\n b"); |
| assertThat(indent("a\nb\nc\nd", 1)).isEqualTo("a\n b\n c\n d"); |
| assertThat(indent("\n", 1)).isEqualTo("\n "); |
| } |
| |
| @Test |
| public void testStripSuffix() throws Exception { |
| assertThat(stripSuffix("", "")).isEmpty(); |
| assertThat(stripSuffix("", "a")).isNull(); |
| assertThat(stripSuffix("a", "")).isEqualTo("a"); |
| assertThat(stripSuffix("aa", "a")).isEqualTo("a"); |
| assertThat(stripSuffix("ab", "c")).isNull(); |
| } |
| |
| @Test |
| public void testCapitalize() throws Exception { |
| assertThat(capitalize("")).isEmpty(); |
| assertThat(capitalize("joe")).isEqualTo("Joe"); |
| assertThat(capitalize("Joe")).isEqualTo("Joe"); |
| assertThat(capitalize("o")).isEqualTo("O"); |
| assertThat(capitalize("O")).isEqualTo("O"); |
| } |
| |
| @Test |
| public void testEmptyToNull() { |
| assertThat(emptyToNull(null)).isNull(); |
| assertThat(emptyToNull("")).isNull(); |
| assertThat(emptyToNull("a")).isEqualTo("a"); |
| assertThat(emptyToNull(" ")).isEqualTo(" "); |
| } |
| } |