1/*
2 * Copyright 2013 Google Inc.
3 *
4 * Use of this source code is governed by a BSD-style license that can be
5 * found in the LICENSE file.
6 */
7
8#include "SkOSPath.h"
9#include "SkString.h"
10#include "Test.h"
11
12/**
13 *  Test SkOSPath::Join, SkOSPath::Basename, and SkOSPath::Dirname.
14 *  Will use SkOSPath::Join to append filename to dir, test that it works correctly,
15 *  and tests using SkOSPath::Basename on the result.
16 *  @param reporter Reporter for test conditions.
17 *  @param dir String representing the path to a folder. May or may not
18 *      end with SkOSPath::SEPARATOR.
19 *  @param filename String representing the basename of a file. Must NOT
20 *      contain SkOSPath::SEPARATOR.
21 */
22static void test_dir_with_file(skiatest::Reporter* reporter, SkString dir,
23                               SkString filename) {
24    // If filename contains SkOSPath::SEPARATOR, the tests will fail.
25    SkASSERT(!filename.contains(SkOSPath::SEPARATOR));
26
27    // Tests for SkOSPath::Join and SkOSPath::Basename
28
29    // fullName should be "dir<SkOSPath::SEPARATOR>file"
30    SkString fullName = SkOSPath::Join(dir.c_str(), filename.c_str());
31
32    // fullName should be the combined size of dir and file, plus one if
33    // dir did not include the final path separator.
34    size_t expectedSize = dir.size() + filename.size();
35    if (!dir.endsWith(SkOSPath::SEPARATOR) && !dir.isEmpty()) {
36        expectedSize++;
37    }
38    REPORTER_ASSERT(reporter, fullName.size() == expectedSize);
39
40    SkString basename = SkOSPath::Basename(fullName.c_str());
41    SkString dirname = SkOSPath::Dirname(fullName.c_str());
42
43    // basename should be the same as filename
44    REPORTER_ASSERT(reporter, basename.equals(filename));
45
46    // dirname should be the same as dir with any trailing seperators removed.
47    // Except when the the string is just "/".
48    SkString strippedDir = dir;
49    while (strippedDir.size() > 2 && strippedDir[strippedDir.size() - 1] == SkOSPath::SEPARATOR) {
50        strippedDir.remove(strippedDir.size() - 1, 1);
51    }
52    if (!dirname.equals(strippedDir)) {
53        SkDebugf("OOUCH %s %s %s\n", dir.c_str(), strippedDir.c_str(), dirname.c_str());
54    }
55    REPORTER_ASSERT(reporter, dirname.equals(strippedDir));
56
57    // basename will not contain a path separator
58    REPORTER_ASSERT(reporter, !basename.contains(SkOSPath::SEPARATOR));
59
60    // Now take the basename of filename, which should be the same as filename.
61    basename = SkOSPath::Basename(filename.c_str());
62    REPORTER_ASSERT(reporter, basename.equals(filename));
63}
64
65DEF_TEST(OSPath, reporter) {
66    SkString dir("dir");
67    SkString filename("file");
68    test_dir_with_file(reporter, dir, filename);
69
70    // Now make sure this works with a path separator at the end of dir.
71    dir.appendUnichar(SkOSPath::SEPARATOR);
72    test_dir_with_file(reporter, dir, filename);
73
74    // Test using no filename.
75    test_dir_with_file(reporter, dir, SkString());
76
77    // Testing using no directory.
78    test_dir_with_file(reporter, SkString(), filename);
79
80    // Test with a sub directory.
81    dir.append("subDir");
82    test_dir_with_file(reporter, dir, filename);
83
84    // Basename of a directory with a path separator at the end is empty.
85    dir.appendUnichar(SkOSPath::SEPARATOR);
86    SkString baseOfDir = SkOSPath::Basename(dir.c_str());
87    REPORTER_ASSERT(reporter, baseOfDir.size() == 0);
88
89    // Basename of nullptr is an empty string.
90    SkString empty = SkOSPath::Basename(nullptr);
91    REPORTER_ASSERT(reporter, empty.size() == 0);
92
93    // File in root dir
94    dir.printf("%c", SkOSPath::SEPARATOR);
95    filename.set("file");
96    test_dir_with_file(reporter, dir, filename);
97
98    // Just the root dir
99    filename.reset();
100    test_dir_with_file(reporter, dir, filename);
101
102    // Test that nullptr can be used for the directory and filename.
103    SkString emptyPath = SkOSPath::Join(nullptr, nullptr);
104    REPORTER_ASSERT(reporter, emptyPath.isEmpty());
105}
106