xref: /aosp_15_r20/external/cronet/build/android/gyp/java_cpp_strings_tests.py (revision 6777b5387eb2ff775bb5750e3f5d96f37fb7352b) 
1#!/usr/bin/env python3
2
3# Copyright 2019 The Chromium Authors
4# Use of this source code is governed by a BSD-style license that can be
5# found in the LICENSE file.
6
7"""Tests for java_cpp_strings.py.
8
9This test suite contains various tests for the C++ -> Java string generator.
10"""
11
12import unittest
13
14import java_cpp_strings
15from util import java_cpp_utils
16
17
18class _TestStringsParser(unittest.TestCase):
19
20  def testParseComments(self):
21    test_data = """
22/**
23 * This should be ignored as well.
24 */
25
26// Comment followed by a blank line.
27
28// Comment followed by unrelated code.
29int foo() { return 3; }
30
31// Real comment.
32const char kASwitch[] = "a-value";
33
34// Real comment that spans
35// multiple lines.
36const char kAnotherSwitch[] = "another-value";
37
38// Comment followed by nothing.
39""".split('\n')
40    string_file_parser = java_cpp_utils.CppConstantParser(
41        java_cpp_strings.StringParserDelegate(), test_data)
42    strings = string_file_parser.Parse()
43    self.assertEqual(2, len(strings))
44    self.assertEqual('A_SWITCH', strings[0].name)
45    self.assertEqual('"a-value"', strings[0].value)
46    self.assertEqual(1, len(strings[0].comments.split('\n')))
47    self.assertEqual('ANOTHER_SWITCH', strings[1].name)
48    self.assertEqual('"another-value"', strings[1].value)
49    self.assertEqual(2, len(strings[1].comments.split('\n')))
50
51  def testStringValues(self):
52    test_data = r"""
53// Single line string constants.
54const char kAString[] = "a-value";
55const char kNoComment[] = "no-comment";
56
57namespace myfeature {
58const char kMyFeatureNoComment[] = "myfeature.no-comment";
59}
60
61// Single line switch with a big space.
62const char kAStringWithSpace[]                      = "a-value";
63
64// Wrapped constant definition.
65const char kAStringWithAVeryLongNameThatWillHaveToWrap[] =
66    "a-string-with-a-very-long-name-that-will-have-to-wrap";
67
68// This one has no comment before it.
69
70const char kAStringWithAVeryLongNameThatWillHaveToWrap2[] =
71    "a-string-with-a-very-long-name-that-will-have-to-wrap2";
72
73const char kStringWithEscapes[] = "tab\tquote\"newline\n";
74const char kStringWithEscapes2[] =
75    "tab\tquote\"newline\n";
76
77const char kEmptyString[] = "";
78
79// These are valid C++ but not currently supported by the script.
80const char kInvalidLineBreak[] =
81
82    "invalid-line-break";
83
84const char kConcatenateMultipleStringLiterals[] =
85    "first line"
86    "second line";
87""".split('\n')
88    string_file_parser = java_cpp_utils.CppConstantParser(
89        java_cpp_strings.StringParserDelegate(), test_data)
90    strings = string_file_parser.Parse()
91    self.assertEqual(9, len(strings))
92    self.assertEqual('A_STRING', strings[0].name)
93    self.assertEqual('"a-value"', strings[0].value)
94    self.assertEqual('NO_COMMENT', strings[1].name)
95    self.assertEqual('"no-comment"', strings[1].value)
96    self.assertEqual('MY_FEATURE_NO_COMMENT', strings[2].name)
97    self.assertEqual('"myfeature.no-comment"', strings[2].value)
98    self.assertEqual('A_STRING_WITH_SPACE', strings[3].name)
99    self.assertEqual('"a-value"', strings[3].value)
100    self.assertEqual('A_STRING_WITH_A_VERY_LONG_NAME_THAT_WILL_HAVE_TO_WRAP',
101                     strings[4].name)
102    self.assertEqual('"a-string-with-a-very-long-name-that-will-have-to-wrap"',
103                     strings[4].value)
104    self.assertEqual('A_STRING_WITH_A_VERY_LONG_NAME_THAT_WILL_HAVE_TO_WRAP2',
105                     strings[5].name)
106    self.assertEqual('"a-string-with-a-very-long-name-that-will-have-to-wrap2"',
107                     strings[5].value)
108    self.assertEqual('STRING_WITH_ESCAPES', strings[6].name)
109    self.assertEqual(r'"tab\tquote\"newline\n"', strings[6].value)
110    self.assertEqual('STRING_WITH_ESCAPES2', strings[7].name)
111    self.assertEqual(r'"tab\tquote\"newline\n"', strings[7].value)
112    self.assertEqual('EMPTY_STRING', strings[8].name)
113    self.assertEqual('""', strings[8].value)
114
115  def testTreatWebViewLikeOneWord(self):
116    test_data = """
117const char kSomeWebViewSwitch[] = "some-webview-switch";
118const char kWebViewOtherSwitch[] = "webview-other-switch";
119const char kSwitchWithPluralWebViews[] = "switch-with-plural-webviews";
120""".split('\n')
121    string_file_parser = java_cpp_utils.CppConstantParser(
122        java_cpp_strings.StringParserDelegate(), test_data)
123    strings = string_file_parser.Parse()
124    self.assertEqual('SOME_WEBVIEW_SWITCH', strings[0].name)
125    self.assertEqual('"some-webview-switch"', strings[0].value)
126    self.assertEqual('WEBVIEW_OTHER_SWITCH', strings[1].name)
127    self.assertEqual('"webview-other-switch"', strings[1].value)
128    self.assertEqual('SWITCH_WITH_PLURAL_WEBVIEWS', strings[2].name)
129    self.assertEqual('"switch-with-plural-webviews"', strings[2].value)
130
131  def testTemplateParsing(self):
132    test_data = """
133// Copyright 2019 The Chromium Authors
134// Use of this source code is governed by a BSD-style license that can be
135// found in the LICENSE file.
136
137package my.java.package;
138
139public any sort of class MyClass {{
140
141{NATIVE_STRINGS}
142
143}}
144""".split('\n')
145    package, class_name = java_cpp_utils.ParseTemplateFile(test_data)
146    self.assertEqual('my.java.package', package)
147    self.assertEqual('MyClass', class_name)
148
149
150if __name__ == '__main__':
151  unittest.main()
152