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import io
import sys
from unittest.mock import patch
from agate import config
from csvkit.utilities.csvlook import CSVLook, launch_new_instance
from tests.utils import CSVKitTestCase, EmptyFileTests, stdin_as_string
class TestCSVLook(CSVKitTestCase, EmptyFileTests):
Utility = CSVLook
def tearDown(self):
config.set_option('truncation_chars', '…')
def test_launch_new_instance(self):
with patch.object(sys, 'argv', [self.Utility.__name__.lower(), 'examples/dummy.csv']):
launch_new_instance()
def test_runs(self):
self.assertLines(['examples/test_utf8.csv'], [
'| foo | bar | baz |',
'| --- | --- | --- |',
'| 1 | 2 | 3 |',
'| 4 | 5 | ʤ |',
])
def test_encoding(self):
self.assertLines(['-e', 'latin1', 'examples/test_latin1.csv'], [
'| a | b | c |',
'| - | - | - |',
'| 1 | 2 | 3 |',
'| 4 | 5 | © |',
])
def test_simple(self):
self.assertLines(['examples/dummy3.csv'], [
'| a | b | c |',
'| ---- | - | - |',
'| True | 2 | 3 |',
'| True | 4 | 5 |',
])
def test_no_blanks(self):
self.assertLines(['examples/blanks.csv'], [
'| a | b | c | d | e | f |',
'| - | - | - | - | - | - |',
'| | | | | | |',
])
def test_blanks(self):
self.assertLines(['--blanks', 'examples/blanks.csv'], [
'| a | b | c | d | e | f |',
'| - | -- | --- | ---- | ---- | - |',
'| | NA | N/A | NONE | NULL | . |',
])
def test_no_header_row(self):
self.assertLines(['--no-header-row', 'examples/no_header_row3.csv'], [
'| a | b | c |',
'| - | - | - |',
'| 1 | 2 | 3 |',
'| 4 | 5 | 6 |',
])
def test_unicode(self):
self.assertLines(['examples/test_utf8.csv'], [
'| foo | bar | baz |',
'| --- | --- | --- |',
'| 1 | 2 | 3 |',
'| 4 | 5 | ʤ |',
])
def test_unicode_bom(self):
self.assertLines(['examples/test_utf8_bom.csv'], [
'| foo | bar | baz |',
'| --- | --- | --- |',
'| 1 | 2 | 3 |',
'| 4 | 5 | ʤ |',
])
def test_linenumbers(self):
self.assertLines(['--linenumbers', 'examples/dummy3.csv'], [
'| line_numbers | a | b | c |',
'| ------------ | ---- | - | - |',
'| 1 | True | 2 | 3 |',
'| 2 | True | 4 | 5 |',
])
def test_no_inference(self):
self.assertLines(['--no-inference', 'examples/dummy3.csv'], [
'| a | b | c |',
'| - | - | - |',
'| 1 | 2 | 3 |',
'| 1 | 4 | 5 |',
])
def test_sniff_limit_no_limit(self):
self.assertLines(['examples/sniff_limit.csv'], [
'| a | b | c |',
'| ---- | - | - |',
'| True | 2 | 3 |',
])
def test_sniff_limit_zero_limit(self):
self.assertLines(['--snifflimit', '0', 'examples/sniff_limit.csv'], [
'| a;b;c |',
'| ----- |',
'| 1;2;3 |',
])
def test_max_rows(self):
self.assertLines(['--max-rows', '0', 'examples/dummy.csv'], [
'| a | b | c |',
'| - | - | - |',
])
def test_max_columns(self):
self.assertLines(['--max-columns', '1', 'examples/dummy.csv'], [
'| a | ... |',
'| ---- | --- |',
'| True | ... |',
])
def test_max_column_width(self):
self.assertLines(['--max-column-width', '1', 'examples/dummy.csv'], [
'| a | b | c |',
'| ----- | - | - |',
'| Tr... | 2 | 3 |',
])
def test_max_precision(self):
self.assertLines(['--max-precision', '0', 'examples/test_precision.csv'], [
'| a |',
'| -- |',
'| 1… |',
])
def test_no_number_ellipsis(self):
self.assertLines(['--no-number-ellipsis', 'examples/test_precision.csv'], [
'| a |',
'| ----- |',
'| 1.235 |',
])
def test_max_precision_no_number_ellipsis(self):
self.assertLines(['--max-precision', '0', '--no-number-ellipsis', 'examples/test_precision.csv'], [
'| a |',
'| - |',
'| 1 |',
])
def test_stdin(self):
input_file = io.BytesIO(b'a,b,c\n1,2,3\n4,5,6\n')
with stdin_as_string(input_file):
self.assertLines([], [
'| a | b | c |',
'| - | - | - |',
'| 1 | 2 | 3 |',
'| 4 | 5 | 6 |',
])
input_file.close()
|
