| /* |
| * Copyright (C) 2016 The Android Open Source Project |
| * |
| * 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 android.util; |
| |
| import androidx.test.filters.LargeTest; |
| |
| import junit.framework.TestCase; |
| |
| import java.io.PrintWriter; |
| import java.io.StringWriter; |
| import java.util.Arrays; |
| import java.util.Collections; |
| import java.util.List; |
| |
| @LargeTest |
| public class LocalLogTest extends TestCase { |
| |
| public void testA() { |
| String[] lines = { |
| "foo", |
| "bar", |
| "baz" |
| }; |
| String[] want = lines; |
| testcase(new LocalLog(10), lines, want); |
| } |
| |
| public void testB() { |
| String[] lines = { |
| "foo", |
| "bar", |
| "baz" |
| }; |
| String[] want = {}; |
| testcase(new LocalLog(0), lines, want); |
| } |
| |
| public void testC() { |
| String[] lines = { |
| "dropped", |
| "dropped", |
| "dropped", |
| "dropped", |
| "dropped", |
| "dropped", |
| "foo", |
| "bar", |
| "baz", |
| }; |
| String[] want = { |
| "foo", |
| "bar", |
| "baz", |
| }; |
| testcase(new LocalLog(3), lines, want); |
| } |
| |
| void testcase(LocalLog logger, String[] input, String[] want) { |
| for (String l : input) { |
| logger.log(l); |
| } |
| verifyAllLines(want, dump(logger).split("\n")); |
| verifyAllLines(reverse(want), reverseDump(logger).split("\n")); |
| } |
| |
| void verifyAllLines(String[] wantLines, String[] gotLines) { |
| for (int i = 0; i < wantLines.length; i++) { |
| String want = wantLines[i]; |
| String got = gotLines[i]; |
| String msg = String.format("%s did not contain %s", quote(got), quote(want)); |
| assertTrue(msg, got.contains(want)); |
| } |
| } |
| |
| static String dump(LocalLog logger) { |
| StringWriter buffer = new StringWriter(); |
| PrintWriter writer = new PrintWriter(buffer); |
| logger.dump(null, writer, new String[0]); |
| return buffer.toString(); |
| } |
| |
| static String reverseDump(LocalLog logger) { |
| StringWriter buffer = new StringWriter(); |
| PrintWriter writer = new PrintWriter(buffer); |
| logger.reverseDump(null, writer, new String[0]); |
| return buffer.toString(); |
| } |
| |
| static String quote(String s) { |
| return '"' + s + '"'; |
| } |
| |
| static String[] reverse(String[] ary) { |
| List<String> ls = Arrays.asList(ary); |
| Collections.reverse(ls); |
| return ls.toArray(new String[ary.length]); |
| } |
| } |