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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 "Test.h"
      9 #include "TestClassDef.h"
     10 #include "SkString.h"
     11 #include "SkOSFile.h"
     12 
     13 /**
     14  *  Test SkPathJoin and SkBasename.
     15  *  Will use SkPathJoin to append filename to dir, test that it works correctly,
     16  *  and tests using SkBasename on the result.
     17  *  @param reporter Reporter for test conditions.
     18  *  @param dir String representing the path to a folder. May or may not
     19  *      end with SkPATH_SEPARATOR.
     20  *  @param filename String representing the basename of a file. Must NOT
     21  *      contain SkPATH_SEPARATOR.
     22  */
     23 static void test_dir_with_file(skiatest::Reporter* reporter, SkString dir,
     24                                SkString filename) {
     25     // If filename contains SkPATH_SEPARATOR, the tests will fail.
     26     SkASSERT(!filename.contains(SkPATH_SEPARATOR));
     27 
     28     // Tests for SkOSPath::SkPathJoin and SkOSPath::SkBasename
     29 
     30     // fullName should be "dir<SkPATH_SEPARATOR>file"
     31     SkString fullName = SkOSPath::SkPathJoin(dir.c_str(), filename.c_str());
     32 
     33     // fullName should be the combined size of dir and file, plus one if
     34     // dir did not include the final path separator.
     35     size_t expectedSize = dir.size() + filename.size();
     36     if (!dir.endsWith(SkPATH_SEPARATOR)) {
     37         expectedSize++;
     38     }
     39     REPORTER_ASSERT(reporter, fullName.size() == expectedSize);
     40 
     41     SkString basename = SkOSPath::SkBasename(fullName.c_str());
     42 
     43     // basename should be the same as filename
     44     REPORTER_ASSERT(reporter, basename.equals(filename));
     45 
     46     // basename will not contain a path separator
     47     REPORTER_ASSERT(reporter, !basename.contains(SkPATH_SEPARATOR));
     48 
     49     // Now take the basename of filename, which should be the same as filename.
     50     basename = SkOSPath::SkBasename(filename.c_str());
     51     REPORTER_ASSERT(reporter, basename.equals(filename));
     52 }
     53 
     54 DEF_TEST(OSPath, reporter) {
     55     SkString dir("dir");
     56     SkString filename("file");
     57     test_dir_with_file(reporter, dir, filename);
     58 
     59     // Now make sure this works with a path separator at the end of dir.
     60     dir.appendUnichar(SkPATH_SEPARATOR);
     61     test_dir_with_file(reporter, dir, filename);
     62 
     63     // Test using no filename.
     64     test_dir_with_file(reporter, dir, SkString());
     65 
     66     // Testing using no directory.
     67     test_dir_with_file(reporter, SkString(), filename);
     68 
     69     // Test with a sub directory.
     70     dir.append("subDir");
     71     test_dir_with_file(reporter, dir, filename);
     72 
     73     // Basename of a directory with a path separator at the end is empty.
     74     dir.appendUnichar(SkPATH_SEPARATOR);
     75     SkString baseOfDir = SkOSPath::SkBasename(dir.c_str());
     76     REPORTER_ASSERT(reporter, baseOfDir.size() == 0);
     77 
     78     // Basename of NULL is an empty string.
     79     SkString empty = SkOSPath::SkBasename(NULL);
     80     REPORTER_ASSERT(reporter, empty.size() == 0);
     81 
     82     // Test that NULL can be used for the directory and filename.
     83     SkString emptyPath = SkOSPath::SkPathJoin(NULL, NULL);
     84     REPORTER_ASSERT(reporter, emptyPath.size() == 1);
     85     REPORTER_ASSERT(reporter, emptyPath.contains(SkPATH_SEPARATOR));
     86 }
     87