1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
|
// Copyright 2018 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.coverageoutputgenerator;
import static com.google.common.truth.Truth.assertThat;
import static com.google.devtools.coverageoutputgenerator.Constants.TRACEFILE_EXTENSION;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.util.List;
import org.junit.Before;
import org.junit.Rule;
import org.junit.Test;
import org.junit.rules.TemporaryFolder;
import org.junit.rules.TestName;
import org.junit.runner.RunWith;
import org.junit.runners.JUnit4;
/** Test for {@link Main}. */
@RunWith(JUnit4.class)
public class MainTest {
private static final int TEST_PARSE_PARALLELISM = 4;
@Rule public TemporaryFolder temporaryFolder = new TemporaryFolder();
@Rule public TestName testName = new TestName();
private Path coverageDir;
@Before
public void createCoverageDirectory() throws IOException {
coverageDir = temporaryFolder.newFolder("coverage-dir").toPath();
}
@Test
public void testMainEmptyCoverageDir() {
assertThat(Main.getCoverageFilesInDir(coverageDir.toAbsolutePath().toString())).isEmpty();
}
@Test
public void testMainGetLcovTracefiles() throws IOException {
Path ccCoverageDir = Files.createTempDirectory(coverageDir, "cc_coverage");
Path javaCoverageDir = Files.createTempDirectory(coverageDir, "java_coverage");
Files.createTempFile(ccCoverageDir, "tracefile1", ".dat");
Files.createTempFile(javaCoverageDir, "tracefile2", ".dat");
List<File> coverageFiles = Main.getCoverageFilesInDir(coverageDir.toAbsolutePath().toString());
List<File> tracefiles = Main.getFilesWithExtension(coverageFiles, TRACEFILE_EXTENSION);
assertThat(tracefiles).hasSize(2);
}
@Test
public void testParallelParse_1KLoC_1KLcovFiles() throws Exception {
assertParallelParse(1024, 4, 256);
}
@Test
public void testParallelParse_1MLoC_4LcovFiles() throws Exception {
assertParallelParse(4, 1024, 1024);
}
@Test
public void testParallelParse_1MLoC_1LcovFiles() throws Exception {
assertParallelParse(1, 1024, 1024);
}
@Test
public void testEmptyInputProducesEmptyOutput() throws Exception {
Path output =
Paths.get(
temporaryFolder.getRoot().getAbsolutePath(),
testName.getMethodName() + ".coverage.dat");
int exitCode =
Main.runWithArgs(
"--coverage_dir", coverageDir.toAbsolutePath().toString(),
"--output_file", output.toAbsolutePath().toString());
assertThat(exitCode).isEqualTo(0);
assertThat(output.toFile().exists()).isTrue();
assertThat(output.toFile().length()).isEqualTo(0L);
}
@Test
public void testNonEmptyInputProducesNonEmptyOutput() throws Exception {
LcovMergerTestUtils.generateLcovFiles("test_data/simple_test", 8, 8, 8, coverageDir);
Path output =
Paths.get(
temporaryFolder.getRoot().getAbsolutePath(),
testName.getMethodName() + ".coverage.dat");
int exitCode =
Main.runWithArgs(
"--coverage_dir", coverageDir.toAbsolutePath().toString(),
"--output_file", output.toAbsolutePath().toString());
assertThat(exitCode).isEqualTo(0);
assertThat(output.toFile().exists()).isTrue();
assertThat(output.toFile().length()).isGreaterThan(0L);
}
private void assertParallelParse(int numLcovFiles, int numSourceFiles, int numLinesPerSourceFile)
throws Exception {
ByteArrayOutputStream sequentialOutput = new ByteArrayOutputStream();
ByteArrayOutputStream parallelOutput = new ByteArrayOutputStream();
LcovMergerTestUtils.generateLcovFiles(
"test_data/simple_test", numLcovFiles, numSourceFiles, numLinesPerSourceFile, coverageDir);
List<File> coverageFiles = Main.getCoverageFilesInDir(coverageDir.toAbsolutePath().toString());
Coverage sequentialCoverage = Main.parseFilesSequentially(coverageFiles, LcovParser::parse);
LcovPrinter.print(sequentialOutput, sequentialCoverage);
Coverage parallelCoverage =
Main.parseFilesInParallel(coverageFiles, LcovParser::parse, TEST_PARSE_PARALLELISM);
LcovPrinter.print(parallelOutput, parallelCoverage);
assertThat(parallelOutput.toString()).isEqualTo(sequentialOutput.toString());
}
}
|
