python-tabulate/test/test_cli.py at master · domdfcoding/python-tabulate · GitHub

History

218 lines (182 loc) · 6.83 KB

Raw

100

101

102

103

104

105

106

107

108

109

110

111

112

113

114

115

116

117

118

119

120

121

122

123

124

125

126

127

128

129

130

131

132

133

134

135

136

137

138

139

140

141

142

143

144

145

146

147

148

149

150

151

152

153

154

155

156

157

158

159

160

161

162

163

164

165

166

167

168

169

170

171

172

173

174

175

176

177

178

179

180

181

182

183

184

185

186

187

188

189

190

191

192

193

194

195

196

197

198

199

200

201

202

203

204

205

206

207

208

209

210

211

212

213

214

215

216

217

218

"""Command-line interface.

"""

import os

import sys

import subprocess

import tempfile

from common import assert_equal

SAMPLE_SIMPLE_FORMAT = "\n".join(

[

"----- ------ -------------",

"Sun 696000 1.9891e+09",

"Earth 6371 5973.6",

"Moon 1737 73.5",

"Mars 3390 641.85",

"----- ------ -------------",

]

)

SAMPLE_SIMPLE_FORMAT_WITH_HEADERS = "\n".join(

[

"Planet Radius Mass",

"-------- -------- -------------",

"Sun 696000 1.9891e+09",

"Earth 6371 5973.6",

"Moon 1737 73.5",

"Mars 3390 641.85",

]

)

SAMPLE_GRID_FORMAT_WITH_HEADERS = "\n".join(

[

"+----------+----------+---------------+",

"| Planet | Radius | Mass |",

"+==========+==========+===============+",

"| Sun | 696000 | 1.9891e+09 |",

"+----------+----------+---------------+",

"| Earth | 6371 | 5973.6 |",

"+----------+----------+---------------+",

"| Moon | 1737 | 73.5 |",

"+----------+----------+---------------+",

"| Mars | 3390 | 641.85 |",

"+----------+----------+---------------+",

]

)

SAMPLE_GRID_FORMAT_WITH_DOT1E_FLOATS = "\n".join(

[

"+-------+--------+---------+",

"| Sun | 696000 | 2.0e+09 |",

"+-------+--------+---------+",

"| Earth | 6371 | 6.0e+03 |",

"+-------+--------+---------+",

"| Moon | 1737 | 7.4e+01 |",

"+-------+--------+---------+",

"| Mars | 3390 | 6.4e+02 |",

"+-------+--------+---------+",

]

)

def sample_input(sep=" ", with_headers=False):

headers = sep.join(["Planet", "Radius", "Mass"])

rows = [

sep.join(["Sun", "696000", "1.9891e9"]),

sep.join(["Earth", "6371", "5973.6"]),

sep.join(["Moon", "1737", "73.5"]),

sep.join(["Mars", "3390", "641.85"]),

]

all_rows = ([headers] + rows) if with_headers else rows

table = "\n".join(all_rows)

return table

def run_and_capture_stdout(cmd, input=None):

x = subprocess.Popen(

cmd, stdin=subprocess.PIPE, stdout=subprocess.PIPE, stderr=subprocess.PIPE

)

input_buf = input.encode() if input else None

out, err = x.communicate(input=input_buf)

out = out.decode("utf-8")

if x.returncode != 0:

raise OSError(err)

return out

class TemporaryTextFile:

def __init__(self):

self.tmpfile = None

def __enter__(self):

self.tmpfile = tempfile.NamedTemporaryFile(

"w+", prefix="tabulate-test-tmp-", delete=False

)

return self.tmpfile

def __exit__(self, exc_type, exc_val, exc_tb):

if self.tmpfile:

self.tmpfile.close()

os.unlink(self.tmpfile.name)

def test_script_from_stdin_to_stdout():

"""Command line utility: read from stdin, print to stdout"""

cmd = [sys.executable, "tabulate/__init__.py"]

out = run_and_capture_stdout(cmd, input=sample_input())

expected = SAMPLE_SIMPLE_FORMAT

print("got: ", repr(out))

print("expected:", repr(expected))

assert_equal(out.splitlines(), expected.splitlines())

def test_script_from_file_to_stdout():

"""Command line utility: read from file, print to stdout"""

with TemporaryTextFile() as tmpfile:

tmpfile.write(sample_input())

tmpfile.seek(0)

cmd = [sys.executable, "tabulate/__init__.py", tmpfile.name]

out = run_and_capture_stdout(cmd)

expected = SAMPLE_SIMPLE_FORMAT

print("got: ", repr(out))

print("expected:", repr(expected))

assert_equal(out.splitlines(), expected.splitlines())

def test_script_from_file_to_file():

"""Command line utility: read from file, write to file"""

with TemporaryTextFile() as input_file:

with TemporaryTextFile() as output_file:

input_file.write(sample_input())

input_file.seek(0)

cmd = [

sys.executable,

"tabulate/__init__.py",

"-o",

output_file.name,

input_file.name,

]

out = run_and_capture_stdout(cmd)

# check that nothing is printed to stdout

expected = ""

print("got: ", repr(out))

print("expected:", repr(expected))

assert_equal(out.splitlines(), expected.splitlines())

# check that the output was written to file

output_file.seek(0)

out = output_file.file.read()

expected = SAMPLE_SIMPLE_FORMAT

print("got: ", repr(out))

print("expected:", repr(expected))

assert_equal(out.splitlines(), expected.splitlines())

def test_script_header_option():

"""Command line utility: -1, --header option"""

for option in ["-1", "--header"]:

cmd = [sys.executable, "tabulate/__init__.py", option]

raw_table = sample_input(with_headers=True)

out = run_and_capture_stdout(cmd, input=raw_table)

expected = SAMPLE_SIMPLE_FORMAT_WITH_HEADERS

print(out)

print("got: ", repr(out))

print("expected:", repr(expected))

assert_equal(out.splitlines(), expected.splitlines())

def test_script_sep_option():

"""Command line utility: -s, --sep option"""

for option in ["-s", "--sep"]:

cmd = [sys.executable, "tabulate/__init__.py", option, ","]

raw_table = sample_input(sep=",")

out = run_and_capture_stdout(cmd, input=raw_table)

expected = SAMPLE_SIMPLE_FORMAT

print("got: ", repr(out))

print("expected:", repr(expected))

assert_equal(out.splitlines(), expected.splitlines())

def test_script_floatfmt_option():

"""Command line utility: -F, --float option"""

for option in ["-F", "--float"]:

cmd = [

sys.executable,

"tabulate/__init__.py",

option,

".1e",

"--format",

"grid",

]

raw_table = sample_input()

out = run_and_capture_stdout(cmd, input=raw_table)

expected = SAMPLE_GRID_FORMAT_WITH_DOT1E_FLOATS

print("got: ", repr(out))

print("expected:", repr(expected))

assert_equal(out.splitlines(), expected.splitlines())

def test_script_format_option():

"""Command line utility: -f, --format option"""

for option in ["-f", "--format"]:

cmd = [sys.executable, "tabulate/__init__.py", "-1", option, "grid"]

raw_table = sample_input(with_headers=True)

out = run_and_capture_stdout(cmd, input=raw_table)

expected = SAMPLE_GRID_FORMAT_WITH_HEADERS

print(out)

print("got: ", repr(out))

print("expected:", repr(expected))

assert_equal(out.splitlines(), expected.splitlines())

python-tabulate/test/test_cli.py at master · domdfcoding/python-tabulate · GitHub

Expand file tree

Breadcrumbs

test_cli.py

Latest commit

History

Breadcrumbs

test_cli.py

File metadata and controls