1 // Copyright 2021 The Tint Authors.
2 //
3 // Licensed under the Apache License, Version 2.0 (the "License");
4 // you may not use this file except in compliance with the License.
5 // You may obtain a copy of the License at
6 //
7 // http://www.apache.org/licenses/LICENSE-2.0
8 //
9 // Unless required by applicable law or agreed to in writing, software
10 // distributed under the License is distributed on an "AS IS" BASIS,
11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 // See the License for the specific language governing permissions and
13 // limitations under the License.
14
15 #include "src/utils/io/tmpfile.h"
16
17 #include <fstream>
18
19 #include "gtest/gtest.h"
20
21 namespace tint {
22 namespace utils {
23 namespace {
24
TEST(TmpFileTest,WriteReadAppendDelete)25 TEST(TmpFileTest, WriteReadAppendDelete) {
26 std::string path;
27 {
28 TmpFile tmp;
29 if (!tmp) {
30 GTEST_SKIP() << "Unable to create a temporary file";
31 }
32
33 path = tmp.Path();
34
35 // Write a string to the temporary file
36 tmp << "hello world\n";
37
38 // Check the content of the file
39 {
40 std::ifstream file(path);
41 ASSERT_TRUE(file);
42 std::string line;
43 EXPECT_TRUE(std::getline(file, line));
44 EXPECT_EQ(line, "hello world");
45 EXPECT_FALSE(std::getline(file, line));
46 }
47
48 // Write some more content to the file
49 tmp << 42;
50
51 // Check the content of the file again
52 {
53 std::ifstream file(path);
54 ASSERT_TRUE(file);
55 std::string line;
56 EXPECT_TRUE(std::getline(file, line));
57 EXPECT_EQ(line, "hello world");
58 EXPECT_TRUE(std::getline(file, line));
59 EXPECT_EQ(line, "42");
60 EXPECT_FALSE(std::getline(file, line));
61 }
62 }
63
64 // Check the file has been deleted when it fell out of scope
65 std::ifstream file(path);
66 ASSERT_FALSE(file);
67 }
68
TEST(TmpFileTest,FileExtension)69 TEST(TmpFileTest, FileExtension) {
70 const std::string kExt = ".foo";
71 std::string path;
72 {
73 TmpFile tmp(kExt);
74 if (!tmp) {
75 GTEST_SKIP() << "Unable create a temporary file";
76 }
77 path = tmp.Path();
78 }
79
80 ASSERT_GT(path.length(), kExt.length());
81 EXPECT_EQ(kExt, path.substr(path.length() - kExt.length()));
82
83 // Check the file has been deleted when it fell out of scope
84 std::ifstream file(path);
85 ASSERT_FALSE(file);
86 }
87
88 } // namespace
89 } // namespace utils
90 } // namespace tint
91