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1#!/usr/bin/env python
2#
3# Copyright (C) 2022 The Android Open Source Project
4#
5# Licensed under the Apache License, Version 2.0 (the "License");
6# you may not use this file except in compliance with the License.
7# You may obtain a copy of the License at
8#
9#      http://www.apache.org/licenses/LICENSE-2.0
10#
11# Unless required by applicable law or agreed to in writing, software
12# distributed under the License is distributed on an "AS IS" BASIS,
13# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14# See the License for the specific language governing permissions and
15# limitations under the License.
16
17import unittest
18
19from io import StringIO
20
21from ninja_writer import Writer
22from ninja_syntax import Variable, Rule, BuildAction
23
24
25class TestWriter(unittest.TestCase):
26    def test_simple_writer(self):
27        with StringIO() as f:
28            writer = Writer(f)
29            writer.add_variable(Variable(name="cflags", value="-Wall"))
30            writer.add_newline()
31
32            cc = Rule(name="cc")
33            cc.add_variable(name="command", value="gcc $cflags -c $in -o $out")
34            writer.add_rule(cc)
35            # Add the same rule twice.
36            ld = Rule(name="ld", variables=(("command", "ld $ldflags -o $out $in"),))
37            writer.add_rule(ld)
38            ld2 = Rule("ld", (("command", "ld $ldflags -o $out $in"),))
39            writer.add_rule(ld2)
40            writer.add_newline()
41
42            writer.add_phony("system", ("foo.o",))
43            writer.add_phony("system", ["foo.o"])
44            build_action = BuildAction(output="foo.o",
45                                       rule="cc",
46                                       inputs=["foo.c"])
47            writer.add_build_action(build_action)
48            writer.write()
49            self.assertEqual(
50                '''cflags = -Wall
51
52rule cc
53  command = gcc $cflags -c $in -o $out
54rule ld
55  command = ld $ldflags -o $out $in
56
57build system: phony foo.o
58build foo.o: cc foo.c
59''', f.getvalue())
60
61    def test_comment(self):
62        with StringIO() as f:
63            writer = Writer(f)
64            writer.add_comment("This is a comment in a ninja file")
65            writer.write()
66            self.assertEqual("# This is a comment in a ninja file\n",
67                             f.getvalue())
68
69
70if __name__ == "__main__":
71    unittest.main()
72