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# Copyright 2015 The Shaderc Authors. All rights reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import expect
import os.path
from glslc_test_framework import inside_glslc_testsuite
from placeholder import FileShader, TempFileName
from builtins import bytes
@inside_glslc_testsuite('OptionDashO')
class TestOptionDashOConcatenatedArg(expect.SuccessfulReturn,
expect.CorrectObjectFilePreamble):
"""Tests that we can concatenate -o and the output filename."""
shader = FileShader('#version 140\nvoid main() {}', '.vert')
glslc_args = ['-ofoo', shader]
def check_output_foo(self, status):
output_name = os.path.join(status.directory, 'foo')
return self.verify_object_file_preamble(output_name)
@inside_glslc_testsuite('OptionDashO')
class ManyOutputFilesWithDashO(expect.ErrorMessage):
"""Tests -o and -c with several files generates an error."""
shader1 = FileShader('', '.vert')
shader2 = FileShader('', '.frag')
glslc_args = ['-o', 'foo', '-c', shader1, shader2]
expected_error = [
'glslc: error: cannot specify -o when '
'generating multiple output files\n']
@inside_glslc_testsuite('OptionDashO')
class OutputFileLocation(expect.SuccessfulReturn,
expect.CorrectObjectFilePreamble):
"""Tests that the -o flag puts a file in a new location."""
shader = FileShader('#version 310 es\nvoid main() {}', '.frag')
glslc_args = [shader, '-o', TempFileName('a.out')]
def check_output_a_out(self, status):
output_name = os.path.join(status.directory, 'a.out')
return self.verify_object_file_preamble(output_name)
@inside_glslc_testsuite('OptionDashO')
class DashOMissingArgumentIsAnError(expect.ErrorMessage):
"""Tests that -o without an argument is an error."""
glslc_args = ['-o']
expected_error = ['glslc: error: argument to \'-o\' is missing ' +
'(expected 1 value)\n']
@inside_glslc_testsuite('OptionDashO')
class OutputFileBinaryAvoidsCRLFTranslation(expect.ReturnCodeIsZero,
expect.NoOutputOnStderr,
expect.NoGeneratedFiles,
expect.CorrectBinaryLengthAndPreamble):
"""Tests that the -o flag emits a binary file without CR/LF translation.
"""
# A shader whose compiled output has three bytes that are newlines.
# If the output stream converts the newlines to CR/LF, then we end up
# with a file that is 4k + 3 bytes long. That will be caught by the
# object file checks.
SHADER_WITH_THREE_NEWLINES_IN_BINARY = """#version 450
layout(location = 0) out uint ovar;
void main() { ovar = 9; }
"""
shader = FileShader(SHADER_WITH_THREE_NEWLINES_IN_BINARY, '.vert')
glslc_args = [shader, '-o', '-']
def check_stdout_binary(self, status):
binary = bytes(status.stdout)
newlines = [x for x in binary if x == ord('\n')]
num_newlines = len(newlines)
if num_newlines % 4 == 0:
return False, "Bad test. Need nontrivial number of newlines"
if num_newlines != 3:
return False, ("Update this test. Expected 3 newlines in the "
"binary, but found {}").format(num_newlines)
return self.verify_binary_length_and_header(bytes(status.stdout))
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