1 // Copyright 2020 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/diagnostic/printer.h"
16
17 #include "gtest/gtest.h"
18
19 namespace tint {
20 namespace diag {
21 namespace {
22
23 // Actually verifying that the expected colors are printed is exceptionally
24 // difficult as:
25 // a) The color emission varies by OS.
26 // b) The logic checks to see if the printer is writing to a terminal, making
27 // mocking hard.
28 // c) Actually probing what gets written to a FILE* is notoriously tricky.
29 //
30 // The least we can do is to exersice the code - which is what we do here.
31 // The test will print each of the colors, and can be examined with human
32 // eyeballs.
33 // This can be enabled or disabled with ENABLE_PRINTER_TESTS
34 #define ENABLE_PRINTER_TESTS 0
35 #if ENABLE_PRINTER_TESTS
36
37 using PrinterTest = testing::Test;
38
TEST_F(PrinterTest,WithColors)39 TEST_F(PrinterTest, WithColors) {
40 auto printer = Printer::create(stdout, true);
41 printer->write("Default", Style{Color::kDefault, false});
42 printer->write("Black", Style{Color::kBlack, false});
43 printer->write("Red", Style{Color::kRed, false});
44 printer->write("Green", Style{Color::kGreen, false});
45 printer->write("Yellow", Style{Color::kYellow, false});
46 printer->write("Blue", Style{Color::kBlue, false});
47 printer->write("Magenta", Style{Color::kMagenta, false});
48 printer->write("Cyan", Style{Color::kCyan, false});
49 printer->write("White", Style{Color::kWhite, false});
50 printf("\n");
51 }
52
TEST_F(PrinterTest,BoldWithColors)53 TEST_F(PrinterTest, BoldWithColors) {
54 auto printer = Printer::create(stdout, true);
55 printer->write("Default", Style{Color::kDefault, true});
56 printer->write("Black", Style{Color::kBlack, true});
57 printer->write("Red", Style{Color::kRed, true});
58 printer->write("Green", Style{Color::kGreen, true});
59 printer->write("Yellow", Style{Color::kYellow, true});
60 printer->write("Blue", Style{Color::kBlue, true});
61 printer->write("Magenta", Style{Color::kMagenta, true});
62 printer->write("Cyan", Style{Color::kCyan, true});
63 printer->write("White", Style{Color::kWhite, true});
64 printf("\n");
65 }
66
TEST_F(PrinterTest,WithoutColors)67 TEST_F(PrinterTest, WithoutColors) {
68 auto printer = Printer::create(stdout, false);
69 printer->write("Default", Style{Color::kDefault, false});
70 printer->write("Black", Style{Color::kBlack, false});
71 printer->write("Red", Style{Color::kRed, false});
72 printer->write("Green", Style{Color::kGreen, false});
73 printer->write("Yellow", Style{Color::kYellow, false});
74 printer->write("Blue", Style{Color::kBlue, false});
75 printer->write("Magenta", Style{Color::kMagenta, false});
76 printer->write("Cyan", Style{Color::kCyan, false});
77 printer->write("White", Style{Color::kWhite, false});
78 printf("\n");
79 }
80
TEST_F(PrinterTest,BoldWithoutColors)81 TEST_F(PrinterTest, BoldWithoutColors) {
82 auto printer = Printer::create(stdout, false);
83 printer->write("Default", Style{Color::kDefault, true});
84 printer->write("Black", Style{Color::kBlack, true});
85 printer->write("Red", Style{Color::kRed, true});
86 printer->write("Green", Style{Color::kGreen, true});
87 printer->write("Yellow", Style{Color::kYellow, true});
88 printer->write("Blue", Style{Color::kBlue, true});
89 printer->write("Magenta", Style{Color::kMagenta, true});
90 printer->write("Cyan", Style{Color::kCyan, true});
91 printer->write("White", Style{Color::kWhite, true});
92 printf("\n");
93 }
94
95 #endif // ENABLE_PRINTER_TESTS
96 } // namespace
97 } // namespace diag
98 } // namespace tint
99