| // Copyright 2019 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.bazel.rules.ninja; |
| |
| import static com.google.common.truth.Truth.assertThat; |
| import static org.junit.Assert.assertThrows; |
| |
| import com.google.devtools.build.lib.bazel.rules.ninja.file.FileFragment; |
| import com.google.devtools.build.lib.bazel.rules.ninja.file.IncorrectSeparatorException; |
| import com.google.devtools.build.lib.bazel.rules.ninja.file.NinjaSeparatorFinder; |
| import java.nio.ByteBuffer; |
| import java.nio.charset.StandardCharsets; |
| import org.junit.Test; |
| import org.junit.runner.RunWith; |
| import org.junit.runners.JUnit4; |
| |
| /** Tests for {@link NinjaSeparatorFinder}. */ |
| @RunWith(JUnit4.class) |
| public class NinjaSeparatorFinderTest { |
| @Test |
| public void testIsSeparator() throws IncorrectSeparatorException { |
| doTestIsSeparator(" \na", 1); |
| doTestIsSeparator("b\na", 1); |
| doTestIsSeparator(" \na", 1); |
| doTestIsSeparator("b\n$", 1); |
| doTestIsSeparator(" \n\n", 1); |
| doTestIsSeparator("a\n\n", 1); |
| // We are pointing to the last symbol of separator. |
| doTestIsSeparator("a\r\n\n", 2); |
| doTestIsSeparator(" \r\n\n", 2); |
| doTestIsSeparator("a\r\na", 2); |
| doTestIsSeparator("\r\na", 1); |
| |
| doTestIsSeparator(" \n ", -1); |
| doTestIsSeparator(" \r\n ", -1); |
| doTestIsSeparator("$\n ", -1); |
| doTestIsSeparator("$\r\n ", -1); |
| doTestIsSeparator("$\r\n\n ", -1); |
| doTestIsSeparator("$\r\n\r\n ", -1); |
| doTestIsSeparator("$\n\n", -1); |
| doTestIsSeparator("$\na", -1); |
| doTestIsSeparator("$\r\na", -1); |
| doTestIsSeparator("a\n ", -1); |
| doTestIsSeparator("a\n\t", -1); |
| // Not enough information. |
| doTestIsSeparator("\r\n", -1); |
| doTestIsSeparator("\n", -1); |
| // Test for incorrect separators. |
| byte[] bytes = "a\rb".getBytes(StandardCharsets.ISO_8859_1); |
| ByteBuffer buffer = ByteBuffer.wrap(bytes); |
| FileFragment fragment = new FileFragment(buffer, 0, 0, buffer.limit()); |
| assertThrows( |
| IncorrectSeparatorException.class, |
| () -> NinjaSeparatorFinder.findNextSeparator(fragment, 0, -1)); |
| } |
| |
| private static void doTestIsSeparator(String s, int expected) throws IncorrectSeparatorException { |
| byte[] bytes = s.getBytes(StandardCharsets.ISO_8859_1); |
| ByteBuffer buffer = ByteBuffer.wrap(bytes); |
| FileFragment fragment = new FileFragment(buffer, 0, 0, buffer.limit()); |
| int result = NinjaSeparatorFinder.findNextSeparator(fragment, 0, -1); |
| assertThat(result).isEqualTo(expected); |
| } |
| } |