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      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 "SkOSFile.h"
      9 #include "SkString.h"
     10 #include "Test.h"
     11 
     12 /**
     13  *  Test SkPathJoin and SkBasename.
     14  *  Will use SkPathJoin to append filename to dir, test that it works correctly,
     15  *  and tests using SkBasename 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 SkPATH_SEPARATOR.
     19  *  @param filename String representing the basename of a file. Must NOT
     20  *      contain SkPATH_SEPARATOR.
     21  */
     22 static void test_dir_with_file(skiatest::Reporter* reporter, SkString dir,
     23                                SkString filename) {
     24     // If filename contains SkPATH_SEPARATOR, the tests will fail.
     25     SkASSERT(!filename.contains(SkPATH_SEPARATOR));
     26 
     27     // Tests for SkOSPath::SkPathJoin and SkOSPath::SkBasename
     28 
     29     // fullName should be "dir<SkPATH_SEPARATOR>file"
     30     SkString fullName = SkOSPath::SkPathJoin(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(SkPATH_SEPARATOR)) {
     36         expectedSize++;
     37     }
     38     REPORTER_ASSERT(reporter, fullName.size() == expectedSize);
     39 
     40     SkString basename = SkOSPath::SkBasename(fullName.c_str());
     41 
     42     // basename should be the same as filename
     43     REPORTER_ASSERT(reporter, basename.equals(filename));
     44 
     45     // basename will not contain a path separator
     46     REPORTER_ASSERT(reporter, !basename.contains(SkPATH_SEPARATOR));
     47 
     48     // Now take the basename of filename, which should be the same as filename.
     49     basename = SkOSPath::SkBasename(filename.c_str());
     50     REPORTER_ASSERT(reporter, basename.equals(filename));
     51 }
     52 
     53 DEF_TEST(OSPath, reporter) {
     54     SkString dir("dir");
     55     SkString filename("file");
     56     test_dir_with_file(reporter, dir, filename);
     57 
     58     // Now make sure this works with a path separator at the end of dir.
     59     dir.appendUnichar(SkPATH_SEPARATOR);
     60     test_dir_with_file(reporter, dir, filename);
     61 
     62     // Test using no filename.
     63     test_dir_with_file(reporter, dir, SkString());
     64 
     65     // Testing using no directory.
     66     test_dir_with_file(reporter, SkString(), filename);
     67 
     68     // Test with a sub directory.
     69     dir.append("subDir");
     70     test_dir_with_file(reporter, dir, filename);
     71 
     72     // Basename of a directory with a path separator at the end is empty.
     73     dir.appendUnichar(SkPATH_SEPARATOR);
     74     SkString baseOfDir = SkOSPath::SkBasename(dir.c_str());
     75     REPORTER_ASSERT(reporter, baseOfDir.size() == 0);
     76 
     77     // Basename of NULL is an empty string.
     78     SkString empty = SkOSPath::SkBasename(NULL);
     79     REPORTER_ASSERT(reporter, empty.size() == 0);
     80 
     81     // Test that NULL can be used for the directory and filename.
     82     SkString emptyPath = SkOSPath::SkPathJoin(NULL, NULL);
     83     REPORTER_ASSERT(reporter, emptyPath.size() == 1);
     84     REPORTER_ASSERT(reporter, emptyPath.contains(SkPATH_SEPARATOR));
     85 }
     86