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      1 /*
      2  * Copyright (C) 2011 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 "base/file_utils.h"
     18 
     19 #include <libgen.h>
     20 #include <stdlib.h>
     21 
     22 #include "base/stl_util.h"
     23 #include "common_art_test.h"
     24 
     25 namespace art {
     26 
     27 class FileUtilsTest : public CommonArtTest {};
     28 
     29 TEST_F(FileUtilsTest, GetDalvikCacheFilename) {
     30   std::string name;
     31   std::string error;
     32 
     33   EXPECT_TRUE(GetDalvikCacheFilename("/system/app/Foo.apk", "/foo", &name, &error)) << error;
     34   EXPECT_EQ("/foo/system@app (at) Foo.apk@classes.dex", name);
     35 
     36   EXPECT_TRUE(GetDalvikCacheFilename("/data/app/foo-1.apk", "/foo", &name, &error)) << error;
     37   EXPECT_EQ("/foo/data@app (at) foo-1.apk@classes.dex", name);
     38 
     39   EXPECT_TRUE(GetDalvikCacheFilename("/system/framework/core.jar", "/foo", &name, &error)) << error;
     40   EXPECT_EQ("/foo/system@framework (at) core.jar@classes.dex", name);
     41 
     42   EXPECT_TRUE(GetDalvikCacheFilename("/system/framework/boot.art", "/foo", &name, &error)) << error;
     43   EXPECT_EQ("/foo/system@framework (at) boot.art", name);
     44 
     45   EXPECT_TRUE(GetDalvikCacheFilename("/system/framework/boot.oat", "/foo", &name, &error)) << error;
     46   EXPECT_EQ("/foo/system@framework (at) boot.oat", name);
     47 }
     48 
     49 TEST_F(FileUtilsTest, GetDalvikCache) {
     50   EXPECT_STREQ("", GetDalvikCache("should-not-exist123").c_str());
     51 
     52   EXPECT_STREQ((android_data_ + "/dalvik-cache/.").c_str(), GetDalvikCache(".").c_str());
     53 }
     54 
     55 
     56 TEST_F(FileUtilsTest, GetSystemImageFilename) {
     57   EXPECT_STREQ("/system/framework/arm/boot.art",
     58                GetSystemImageFilename("/system/framework/boot.art", InstructionSet::kArm).c_str());
     59 }
     60 
     61 TEST_F(FileUtilsTest, GetAndroidRootSafe) {
     62   std::string error_msg;
     63 
     64   // We don't expect null returns for most cases, so don't check and let std::string crash.
     65 
     66   // CommonArtTest sets ANDROID_ROOT, so expect this to be the same.
     67   std::string android_root = GetAndroidRootSafe(&error_msg);
     68   std::string android_root_env = getenv("ANDROID_ROOT");
     69   EXPECT_EQ(android_root, android_root_env) << error_msg;
     70 
     71   // Set ANDROID_ROOT to something else (but the directory must exist). So use dirname.
     72   UniqueCPtr<char> root_dup(strdup(android_root_env.c_str()));
     73   char* dir = dirname(root_dup.get());
     74   ASSERT_EQ(0, setenv("ANDROID_ROOT", dir, /* overwrite */ 1));
     75   std::string android_root2 = GetAndroidRootSafe(&error_msg);
     76   EXPECT_STREQ(dir, android_root2.c_str()) << error_msg;
     77 
     78   // Set a bogus value for ANDROID_ROOT. This should be an error.
     79   ASSERT_EQ(0, setenv("ANDROID_ROOT", "/this/is/obviously/bogus", /* overwrite */ 1));
     80   EXPECT_EQ(GetAndroidRootSafe(&error_msg), "");
     81 
     82   // Unset ANDROID_ROOT and see that it still returns something (as libart code is running).
     83   ASSERT_EQ(0, unsetenv("ANDROID_ROOT"));
     84   std::string android_root3 = GetAndroidRootSafe(&error_msg);
     85   // This should be the same as the other root (modulo realpath), otherwise the test setup is
     86   // broken. On non-bionic. On bionic we can be running with a different libart that lives outside
     87   // of ANDROID_ROOT
     88   UniqueCPtr<char> real_root3(realpath(android_root3.c_str(), nullptr));
     89 #if !defined(__BIONIC__ ) || defined(__ANDROID__)
     90   UniqueCPtr<char> real_root(realpath(android_root.c_str(), nullptr));
     91   EXPECT_STREQ(real_root.get(), real_root3.get()) << error_msg;
     92 #else
     93   EXPECT_STRNE(real_root3.get(), "") << error_msg;
     94 #endif
     95 
     96   // Reset ANDROID_ROOT, as other things may depend on it.
     97   ASSERT_EQ(0, setenv("ANDROID_ROOT", android_root_env.c_str(), /* overwrite */ 1));
     98 }
     99 
    100 TEST_F(FileUtilsTest, GetAndroidRuntimeRootSafe) {
    101   std::string error_msg;
    102 
    103   // We don't expect null returns for most cases, so don't check and let std::string crash.
    104 
    105   // CommonArtTest sets ANDROID_RUNTIME_ROOT, so expect this to be the same.
    106   std::string android_runtime_root = GetAndroidRuntimeRootSafe(&error_msg);
    107   std::string android_runtime_root_env = getenv("ANDROID_RUNTIME_ROOT");
    108   EXPECT_EQ(android_runtime_root, android_runtime_root_env) << error_msg;
    109 
    110   // Set ANDROID_RUNTIME_ROOT to something else (but the directory must exist). So use dirname.
    111   UniqueCPtr<char> root_dup(strdup(android_runtime_root_env.c_str()));
    112   char* dir = dirname(root_dup.get());
    113   ASSERT_EQ(0, setenv("ANDROID_RUNTIME_ROOT", dir, /* overwrite */ 1));
    114   std::string android_runtime_root2 = GetAndroidRuntimeRootSafe(&error_msg);
    115   EXPECT_STREQ(dir, android_runtime_root2.c_str()) << error_msg;
    116 
    117   // Set a bogus value for ANDROID_RUNTIME_ROOT. This should be an error.
    118   ASSERT_EQ(0, setenv("ANDROID_RUNTIME_ROOT", "/this/is/obviously/bogus", /* overwrite */ 1));
    119   EXPECT_EQ(GetAndroidRuntimeRootSafe(&error_msg), "");
    120 
    121   // Reset ANDROID_RUNTIME_ROOT, as other things may depend on it.
    122   ASSERT_EQ(0, setenv("ANDROID_RUNTIME_ROOT", android_runtime_root_env.c_str(), /* overwrite */ 1));
    123 }
    124 
    125 TEST_F(FileUtilsTest, ReplaceFileExtension) {
    126   EXPECT_EQ("/directory/file.vdex", ReplaceFileExtension("/directory/file.oat", "vdex"));
    127   EXPECT_EQ("/.directory/file.vdex", ReplaceFileExtension("/.directory/file.oat", "vdex"));
    128   EXPECT_EQ("/directory/file.vdex", ReplaceFileExtension("/directory/file", "vdex"));
    129   EXPECT_EQ("/.directory/file.vdex", ReplaceFileExtension("/.directory/file", "vdex"));
    130 }
    131 
    132 }  // namespace art
    133