| // Copyright 2017 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.rules.objc; |
| |
| import static com.google.common.truth.Truth.assertThat; |
| import static org.junit.Assert.fail; |
| |
| import com.google.common.base.Functions; |
| import com.google.common.collect.ImmutableList; |
| import com.google.common.collect.Iterables; |
| import org.junit.Test; |
| import org.junit.runner.RunWith; |
| import org.junit.runners.JUnit4; |
| |
| /** Test case for the Interspersing utility. */ |
| @RunWith(JUnit4.class) |
| public class InterspersingTest { |
| @Test |
| public void beforeEach_empty() { |
| assertThat(Interspersing.beforeEach("foo", ImmutableList.<String>of())).isEmpty(); |
| } |
| |
| @Test |
| public void beforeEach_isLazy() { |
| Iterable<Integer> result = Interspersing.beforeEach(1011, Iterables.cycle(1, 2, 3)); |
| assertThat(Iterables.get(result, 0)).isEqualTo((Object) 1011); |
| assertThat(Iterables.get(result, 1)).isEqualTo((Object) 1); |
| assertThat(Iterables.get(result, 2)).isEqualTo((Object) 1011); |
| assertThat(Iterables.get(result, 3)).isEqualTo((Object) 2); |
| } |
| |
| @Test |
| public void beforeEach_throwsForNullWhat() { |
| try { |
| Interspersing.beforeEach(null, ImmutableList.of("a")); |
| fail("should have thrown"); |
| } catch (NullPointerException expected) {} |
| } |
| |
| @Test |
| public void prependEach_empty() { |
| assertThat(Interspersing.prependEach("foo", ImmutableList.<String>of())).isEmpty(); |
| } |
| |
| @Test |
| public void prependEach_isLazy() { |
| Iterable<String> result = Interspersing.prependEach( |
| "#", Iterables.cycle(1, 2, 3), Functions.toStringFunction()); |
| assertThat(Iterables.get(result, 0)).isEqualTo("#1"); |
| } |
| |
| @Test |
| public void prependEach_typicalList() { |
| Iterable<String> result = Interspersing.prependEach( |
| "*", ImmutableList.of("a", "b", "c")); |
| assertThat(result).containsExactly("*a", "*b", "*c").inOrder(); |
| } |
| |
| @Test |
| public void prependEach_throwsForNullWhat() { |
| try { |
| Interspersing.prependEach(null, ImmutableList.of("a")); |
| fail("should have thrown"); |
| } catch (NullPointerException expected) {} |
| } |
| } |