1*f585d8a3SJacky Wang /* 2*f585d8a3SJacky Wang * Copyright (C) 2018 The Dagger Authors. 3*f585d8a3SJacky Wang * 4*f585d8a3SJacky Wang * Licensed under the Apache License, Version 2.0 (the "License"); 5*f585d8a3SJacky Wang * you may not use this file except in compliance with the License. 6*f585d8a3SJacky Wang * You may obtain a copy of the License at 7*f585d8a3SJacky Wang * 8*f585d8a3SJacky Wang * http://www.apache.org/licenses/LICENSE-2.0 9*f585d8a3SJacky Wang * 10*f585d8a3SJacky Wang * Unless required by applicable law or agreed to in writing, software 11*f585d8a3SJacky Wang * distributed under the License is distributed on an "AS IS" BASIS, 12*f585d8a3SJacky Wang * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13*f585d8a3SJacky Wang * See the License for the specific language governing permissions and 14*f585d8a3SJacky Wang * limitations under the License. 15*f585d8a3SJacky Wang */ 16*f585d8a3SJacky Wang 17*f585d8a3SJacky Wang package dagger.internal.codegen; 18*f585d8a3SJacky Wang 19*f585d8a3SJacky Wang import static java.util.Arrays.stream; 20*f585d8a3SJacky Wang import static java.util.stream.Collectors.joining; 21*f585d8a3SJacky Wang 22*f585d8a3SJacky Wang import com.google.common.base.Joiner; 23*f585d8a3SJacky Wang import java.util.regex.Pattern; 24*f585d8a3SJacky Wang 25*f585d8a3SJacky Wang /** Utility methods useful for codegen tests. */ 26*f585d8a3SJacky Wang final class TestUtils { 27*f585d8a3SJacky Wang 28*f585d8a3SJacky Wang private static final Joiner MESSAGE_JOINER = Joiner.on("\n "); 29*f585d8a3SJacky Wang 30*f585d8a3SJacky Wang /** 31*f585d8a3SJacky Wang * Returns the lines joined by {@code "\n "}. Useful for passing to {@link 32*f585d8a3SJacky Wang * com.google.testing.compile.CompilationSubject#hadErrorContaining(String)}, etc. 33*f585d8a3SJacky Wang */ message(String... lines)34*f585d8a3SJacky Wang static String message(String... lines) { 35*f585d8a3SJacky Wang return MESSAGE_JOINER.join(lines); 36*f585d8a3SJacky Wang } 37*f585d8a3SJacky Wang 38*f585d8a3SJacky Wang /** 39*f585d8a3SJacky Wang * Returns a pattern that matches strings that end with the lines joined by {@code "\n\s*"}. 40*f585d8a3SJacky Wang * Useful for passing to {@link 41*f585d8a3SJacky Wang * com.google.testing.compile.CompilationSubject#hadErrorContainingMatch(Pattern)}, etc. 42*f585d8a3SJacky Wang */ endsWithMessage(String... lines)43*f585d8a3SJacky Wang static Pattern endsWithMessage(String... lines) { 44*f585d8a3SJacky Wang return Pattern.compile( 45*f585d8a3SJacky Wang String.format("%s$", stream(lines).map(Pattern::quote).collect(joining("\n\\s*")))); 46*f585d8a3SJacky Wang } 47*f585d8a3SJacky Wang } 48