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80 lines
2.7 KiB
80 lines
2.7 KiB
import pytest
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from calculate.utils.files import Process
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from subprocess import run, PIPE
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@pytest.mark.files_utils
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class TestUtils():
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def test_if_single_correct_command_executed_using_Process_object__it_successfully_executes(self):
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try:
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ls_process = Process('ls', '-a', cwd='/')
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ls_result = run('ls -a', shell=True, stdout=PIPE, cwd='/')
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except Exception as error:
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print('error:', str(error))
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assert False
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output = ls_process.read().strip()
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result = ls_result.stdout.decode().strip()
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assert output == result
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def test_if_pipe_is_executed_using_Process_object__it_has_successfully_executed(self):
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try:
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pipe = Process('grep', 'VGA',
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stdin=Process('/usr/sbin/lspci')
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)
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pipe_result = run('/usr/sbin/lspci | grep "VGA"', shell=True, stdout=PIPE)
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except Exception as error:
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print('error:', str(error))
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assert False
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output = pipe.read().strip()
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result = pipe_result.stdout.decode().strip()
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assert output == result
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def test_if_a_pipe_Process_object_uses_for_several_writes_without_readings__it_successfully_executes(self):
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input_lines = ['KEY: important line.\n',
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'NONE: not important line.\n',
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'NONE: nothing interesting.\n',
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'KEY: another line.\n']
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output_text = 'KEY: important line.\nKEY: another line.\n'
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try:
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pipe = Process('grep', 'KEY',
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stdin=Process('cat', stdin=PIPE)
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)
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except Exception as error:
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print('error:', str(error))
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assert False
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for line in input_lines:
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pipe.write(line)
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output = pipe.read()
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assert output == output_text
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def test_if_a_pipe_Process_object_uses_for_several_writes__it_successfully_executes_even_after_read(self):
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input_lines = ['KEY: important line.\n',
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'NONE: not important line.\n',
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'NONE: nothing interesting.\n',
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'KEY: another line.\n']
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output_lines = ['KEY: important line.\n',
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'KEY: another line.\n']
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try:
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pipe = Process('grep', 'KEY',
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stdin=Process('cat', stdin=PIPE)
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)
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except Exception as error:
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print('error:', str(error))
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assert False
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output = []
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for line in input_lines:
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pipe.write(line)
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output_line = pipe.read()
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if output_line:
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output.append(output_line)
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assert output == output_lines
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