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      1 /*
      2  * Copyright (C) 2016 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 #include "util/Files.h"
     18 
     19 #include <sstream>
     20 
     21 #include "android-base/stringprintf.h"
     22 #include "android-base/utf8.h"
     23 
     24 #include "test/Test.h"
     25 
     26 using ::android::base::StringPrintf;
     27 
     28 namespace aapt {
     29 namespace file {
     30 
     31 #ifdef _WIN32
     32 constexpr const char sTestDirSep = '\\';
     33 #else
     34 constexpr const char sTestDirSep = '/';
     35 #endif
     36 
     37 class FilesTest : public ::testing::Test {
     38  public:
     39   void SetUp() override {
     40     std::stringstream builder;
     41     builder << "hello" << sDirSep << "there";
     42     expected_path_ = builder.str();
     43   }
     44 
     45  protected:
     46   std::string expected_path_;
     47 };
     48 
     49 TEST_F(FilesTest, AppendPath) {
     50   std::string base = "hello";
     51   AppendPath(&base, "there");
     52   EXPECT_EQ(expected_path_, base);
     53 }
     54 
     55 TEST_F(FilesTest, AppendPathWithLeadingOrTrailingSeparators) {
     56   std::string base = StringPrintf("hello%c", sTestDirSep);
     57   AppendPath(&base, "there");
     58   EXPECT_EQ(expected_path_, base);
     59 
     60   base = "hello";
     61   AppendPath(&base, StringPrintf("%cthere", sTestDirSep));
     62   EXPECT_EQ(expected_path_, base);
     63 
     64   base = StringPrintf("hello%c", sTestDirSep);
     65   AppendPath(&base, StringPrintf("%cthere", sTestDirSep));
     66   EXPECT_EQ(expected_path_, base);
     67 }
     68 
     69 #ifdef _WIN32
     70 TEST_F(FilesTest, WindowsMkdirsLongPath) {
     71   // Creating directory paths longer than the Windows maximum path length (260 charatcers) should
     72   // succeed.
     73   const std::string kDirName = "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa";
     74   const size_t kRecursiveDepth = 10u;
     75 
     76   // Recursively create the test file path and clean up the created directories after the files have
     77   // been created.
     78   std::function<void(std::string, size_t)> CreateResursiveDirs =
     79       [&kDirName, &CreateResursiveDirs](std::string current_path, const size_t n) -> void {
     80     AppendPath(&current_path, kDirName);
     81 
     82     if (n == 0) {
     83       ASSERT_TRUE(file::mkdirs(current_path)) << "Failed to create path " << current_path;
     84     } else {
     85       CreateResursiveDirs(current_path, n - 1);
     86     }
     87 
     88     // Clean up the created directories.
     89     _rmdir(current_path.data());
     90   };
     91 
     92   CreateResursiveDirs(
     93       android::base::StringPrintf(R"(\\?\%s)", android::base::GetExecutableDirectory().data()),
     94       kRecursiveDepth);
     95 }
     96 
     97 TEST_F(FilesTest, WindowsMkdirsLongPathMissingDrive) {
     98   ASSERT_FALSE(file::mkdirs(R"(\\?\local\path\to\file)"));
     99   ASSERT_FALSE(file::mkdirs(R"(\\?\:local\path\to\file)"));
    100   ASSERT_FALSE(file::mkdirs(R"(\\?\\local\path\to\file)"));
    101 }
    102 #endif
    103 
    104 }  // namespace files
    105 }  // namespace aapt
    106