def example_failing_verification():
n_failures = 0
df = pd.DataFrame({
'a': [0, 1, 2, 10, pd.np.NaN],
'b': ['one', 'one', 'two', 'three', pd.np.NaN]
})
v = verify_df(df, TDDA_FILE)
if v.failures > 0:
print('Correctly failed to verify dataframe that does not satisify '
'all the constraints in %s' % TDDA_FILE)
if v.failures != 7 and v.passes != 5:
print('However, expected 7 failures and 5 passes.\n'
'Actual: Failures: %d, Passes: %s.\n'
'*** Not great!' % (v.failures, v.passes))
n_failures = 1
elif v.failures == 0:
print('*** Incorrectly verified dataframe that should have failed '
'against constraints in\n %s.' % TDDA_FILE,
file=sys.stderr)
n_failures = 1
print('\nRESULT AS A STRING:\n')
print(str(v))
print('\nRESULT AS A DATAFRAME:\n')
print(v.to_frame())
print('\n')
return n_failures
def testElements92(self):
csv_path = os.path.join(TESTDATA_DIR, 'elements92.csv')
df = pd.read_csv(csv_path)
constraints_path = os.path.join(TESTDATA_DIR, 'elements92.tdda')
v = verify_df(df, constraints_path)
self.assertEqual(v.passes, 72)
self.assertEqual(v.failures, 0)
def testElements118(self):
csv_path = os.path.join(TESTDATA_DIR, 'elements118.csv')
df = pd.read_csv(csv_path)
constraints_path = os.path.join(TESTDATA_DIR, 'elements92.tdda')
v = verify_df(df, constraints_path, report='fields')
self.assertEqual(v.passes, 57)
self.assertEqual(v.failures, 15)
vdf = v.to_dataframe()
vdf.sort_values('field', inplace=True)
def example_positive_verification():
n_failures = 0
df = pd.DataFrame({'a': [2, 4], 'b': ['one', pd.np.NaN]})
v = verify_df(df, TDDA_FILE)
if v.failures == 0:
print('Correctly verified dataframe against constraints in %s.' %
TDDA_FILE)
else:
print('*** Unexpectedly failed to verify dataframe against constraints'
' in %s.\nSomething is wrong!' % TDDA_FILE,
file=sys.stderr)
print(v)
n_failures = 1
return n_failures
def verify_df_from_file(df_path, constraints_path, **kwargs):
df = load_df(df_path)
print(verify_df(df, constraints_path, **kwargs))
# elements_verify_118.py
from __future__ import print_function
import pandas as pd
from tdda.constraints.pdconstraints import verify_df
df = pd.read_csv('testdata/elements118.csv')
print(verify_df(df, 'elements92.tdda'))
import pandas as pd
from tdda.constraints.pdconstraints import verify_df
df = pd.DataFrame({'a': [2, 4], 'b': ['one', pd.np.NaN]})
v = verify_df(df, 'example_constraints.tdda')
print('Passes: %d' % v.passes)
print('Failures: %d\n\n\n' % v.failures)
print(str(v))
print('\n\n')
print(v.to_frame())
# elements_verify_118.py
from __future__ import print_function
import pandas as pd
from tdda.constraints.pdconstraints import verify_df
df = pd.read_csv('testdata/elements118.csv')
print(verify_df(df, 'elements118.tdda'))