def test_delete_file(self):
"""Test delete file method."""
db = FileSystemFilestore(SERVER_DIR)
f = db.upload_file(CSV_FILE)
f = db.get_file(f.identifier)
self.assertIsNotNone(f)
self.assertTrue(db.delete_file(f.identifier))
f = db.get_file(f.identifier)
self.assertIsNone(f)
class TestDefaultVizualApi(unittest.TestCase):
api: MimirVizualApi
def setUp(self):
"""Create an instance of the default vizier API for an empty server
directory.
"""
# Drop directory if it exists
if os.path.isdir(SERVER_DIR):
shutil.rmtree(SERVER_DIR)
os.makedirs(SERVER_DIR)
self.api = MimirVizualApi()
self.datastore = MimirDatastore(DATASTORE_DIR)
self.filestore = FileSystemFilestore(FILESTORE_DIR)
def tearDown(self):
"""Clean-up by dropping the server directory.
"""
if os.path.isdir(SERVER_DIR):
shutil.rmtree(SERVER_DIR)
def test_api(self):
"""Run all tests after we initialize mimir. Make sure to create a
fresh environment after each test.
"""
self.delete_column()
self.setUp()
self.delete_row()
self.setUp()
self.filter_columns()
self.setUp()
self.insert_column()
self.setUp()
self.insert_row()
self.setUp()
self.load_dataset()
self.setUp()
self.move_column()
self.setUp()
self.move_row()
self.setUp()
self.rename_column()
self.setUp()
self.sequence_of_steps()
self.setUp()
self.sort_dataset()
self.setUp()
self.update_cell()
def delete_column(self):
"""Test functionality to delete a column."""
# Create a new dataset
fh = self.filestore.upload_file(CSV_FILE)
ds = self.api.load_dataset(datastore=self.datastore,
filestore=self.filestore,
file_id=fh.identifier).dataset
ds_rows = ds.fetch_rows()
# Keep track of column and row identifier
row_ids = [row.identifier for row in ds_rows]
# Delete Age column
col_id = ds.column_by_name('AGE').identifier
result = self.api.delete_column(ds.identifier, col_id, self.datastore)
# Resulting dataset should differ from previous one
self.assertNotEqual(result.dataset.identifier, ds.identifier)
# Retrieve modified dataset and ensure that it cobtains the following
#
# Name, Salary
# ------------
# Alice, 35K
# Bob, 30K
ds = self.datastore.get_dataset(result.dataset.identifier)
ds_rows = ds.fetch_rows()
# Schema is Name, Salary
self.assertEqual(len(ds.columns), 2)
self.assertEqual(ds.columns[0].name.upper(), 'NAME')
self.assertEqual(ds.columns[1].name.upper(), 'SALARY')
# Make sure that all rows only have two columns
row = ds_rows[0]
self.assertEqual(len(row.values), 2)
self.assertEqual(len(row.values), 2)
self.assertEqual(row.values[0], 'Alice')
self.assertEqual(row.values[1], '35K')
row = ds_rows[1]
self.assertEqual(len(row.values), 2)
self.assertEqual(len(row.values), 2)
self.assertEqual(row.values[0], 'Bob')
self.assertEqual(row.values[1], '30K')
# Ensure that row identifier haven't changed
for i in range(len(ds_rows)):
self.assertEqual(ds_rows[i].identifier, row_ids[i])
# Ensure exception is thrown if dataset identifier is unknown
with self.assertRaises(MimirError):
self.api.delete_column('unknown:uri', 0, self.datastore)
# Ensure exception is thrown if column identifier is unknown
with self.assertRaises(ValueError):
self.api.delete_column(ds.identifier, 100, self.datastore)
def delete_row(self):
"""Test functionality to delete a row."""
# Create a new dataset
fh = self.filestore.upload_file(CSV_FILE)
ds = self.api.load_dataset(datastore=self.datastore,
filestore=self.filestore,
file_id=fh.identifier).dataset
ds_rows = ds.fetch_rows()
# Keep track of column and row identifier
col_ids = [col.identifier for col in ds.columns]
row_ids = [row.identifier for row in ds_rows]
# Delete second row
result = self.api.delete_row(ds.identifier, row_ids[1], self.datastore)
del row_ids[1]
# Resulting dataset should differ from previous one
self.assertNotEqual(result.dataset.identifier, ds.identifier)
# Retrieve modified dataset and ensure that it contains the following
# data:
#
# Name, Age, Salary
# ------------
# Alice, 23, 35K
ds = self.datastore.get_dataset(result.dataset.identifier)
ds_rows = ds.fetch_rows()
# Schema is Name, Salary
col_names = ['Name', 'Age', 'Salary']
self.assertEqual(len(ds.columns), len(col_names))
for i in range(len(ds.columns)):
self.assertEqual(ds.columns[i].name.upper(), col_names[i].upper())
# Make sure column identifier haven't changed
for i in range(len(ds.columns)):
self.assertEqual(ds.columns[i].identifier, col_ids[i])
# There should only be one row
self.assertEqual(len(ds_rows), 1)
# Ensure that row identifier haven't changed
for i in range(len(ds_rows)):
self.assertEqual(ds_rows[i].identifier, row_ids[i])
# Ensure exception is thrown if dataset is unknown
with self.assertRaises(MimirError):
self.api.delete_row('unknown:uri', 0, self.datastore)
def filter_columns(self):
"""Test projection of a dataset."""
# Create a new dataset
fh = self.filestore.upload_file(CSV_FILE)
ds = self.api.load_dataset(datastore=self.datastore,
filestore=self.filestore,
file_id=fh.identifier).dataset
result = self.api.filter_columns(ds.identifier, [2, 0], ['BD', None],
self.datastore)
ds = self.datastore.get_dataset(result.dataset.identifier)
self.assertEqual(len(ds.columns), 2)
self.assertEqual(ds.columns[0].name.upper(), 'BD')
self.assertEqual(ds.columns[1].name.upper(), 'NAME')
rows = ds.fetch_rows()
self.assertEqual(rows[0].values, ['35K', 'Alice'])
self.assertEqual(rows[1].values, ['30K', 'Bob'])
def insert_column(self):
"""Test functionality to insert a columns."""
# Create a new dataset
fh = self.filestore.upload_file(CSV_FILE)
ds = self.api.load_dataset(datastore=self.datastore,
filestore=self.filestore,
file_id=fh.identifier).dataset
ds_rows = ds.fetch_rows()
# Keep track of column and row identifier
col_ids = [col.identifier for col in ds.columns]
row_ids = [row.identifier for row in ds_rows]
# Insert columns at position 1
col_ids.insert(1, ds.max_column_id() + 1)
result = self.api.insert_column(ds.identifier, 1, 'Height',
self.datastore)
# Resulting dataset should differ from previous one
self.assertNotEqual(result.dataset.identifier, ds.identifier)
# Retrieve dataset and ensure that it has the following schema:
# Name, Height, Age, Salary
ds = self.datastore.get_dataset(result.dataset.identifier)
col_names = ['Name', 'Height', 'Age', 'Salary']
# Ensure that there are four rows
self.assertEqual(len(ds.columns), len(col_names))
print(ds.columns)
for i in range(len(col_names)):
col = ds.columns[i]
self.assertEqual(col.name.upper(), col_names[i].upper())
# Insert columns at last position
col_ids.append(ds.max_column_id() + 1)
col_names.append('Weight')
result = self.api.insert_column(ds.identifier, 4, 'Weight',
self.datastore)
# Resulting dataset should differ from previous one
self.assertNotEqual(result.dataset.identifier, ds.identifier)
# Retrieve dataset and ensure that it has the following schema:
# Name, Height, Age, Salary, Weight
ds = self.datastore.get_dataset(result.dataset.identifier)
ds_rows = ds.fetch_rows()
# Ensure that there are five rows
self.assertEqual(len(ds.columns), len(col_names))
for i in range(len(col_names)):
col = ds.columns[i]
self.assertEqual(col.name.upper(), col_names[i].upper())
# The cell values for new columns are None all other values are not None
for row in ds_rows:
for i in range(len(ds.columns)):
if i == 1 or i == 4:
self.assertIsNone(row.values[i])
else:
self.assertTrue(row.values[i])
# Ensure that row identifier haven't changed
for i in range(len(ds_rows)):
self.assertEqual(ds_rows[i].identifier, row_ids[i])
# Ensure exception is thrown if dataset identifier is unknown
with self.assertRaises(MimirError):
self.api.insert_column('unknown:uri', 1, 'Height', self.datastore)
# Ensure exception is thrown if column name is invalid
self.api.insert_column(ds.identifier, 1, 'Height_from_ground',
self.datastore)
with self.assertRaises(ValueError):
self.api.insert_column(ds.identifier, 1, 'Height from ground!@#',
self.datastore)
# Ensure exception is thrown if column position is out of bounds
with self.assertRaises(ValueError):
self.api.insert_column(ds.identifier, 100, 'Height',
self.datastore)
def insert_row(self):
"""Test functionality to insert a row."""
fh = self.filestore.upload_file(CSV_FILE)
ds = self.api.load_dataset(datastore=self.datastore,
filestore=self.filestore,
file_id=fh.identifier).dataset
# Keep track of column and row identifier
ds_rows = ds.fetch_rows()
row_ids = [row.identifier for row in ds_rows]
# Insert row at index position 1
row_ids.insert(1, None)
# Result should indicate that one row was inserted. The identifier of
# the resulting dataset should differ from the identifier of the
# original dataset
result = self.api.insert_row(ds.identifier, 1, self.datastore)
# Resulting dataset should differ from previous one
self.assertNotEqual(result.dataset.identifier, ds.identifier)
# Retrieve modified dataset
ds = self.datastore.get_dataset(result.dataset.identifier)
ds_rows = ds.fetch_rows()
# Ensure that there are three rows
self.assertEqual(len(ds_rows), 3)
# The second row has empty values for each column
row = ds_rows[1]
self.assertEqual(len(row.values), len(ds.columns))
for i in range(len(ds.columns)):
self.assertIsNone(row.values[i])
# Append row at end current dataset
row_ids.append(None)
result = self.api.insert_row(ds.identifier, 3, self.datastore)
# Resulting dataset should differ from previous one
self.assertNotEqual(result.dataset.identifier, ds.identifier)
ds = self.datastore.get_dataset(result.dataset.identifier)
ds_rows = ds.fetch_rows()
# Ensure that there are three rows
self.assertEqual(len(ds_rows), 4)
# The next to last row has non-empty values for each column
row = ds_rows[2]
self.assertEqual(len(row.values), len(ds.columns))
for i in range(len(ds.columns)):
self.assertIsNotNone(row.values[i])
# The last row has empty values for each column
row = ds_rows[3]
self.assertEqual(len(row.values), len(ds.columns))
for i in range(len(ds.columns)):
self.assertIsNone(row.values[i])
# Ensure that row ids haven't changed
# ## July 16, 2020 by OK: Bug in mimir that is going to take a bunch of
# ## heavy lifting to fix: https://github.com/UBOdin/mimir-api/issues/11
# for i in range(len(ds_rows)):
# if row_ids[i] is not None:
# self.assertEqual(int(ds_rows[i].identifier), int(row_ids[i]))
# Ensure exception is thrown if dataset identifier is unknown
with self.assertRaises(MimirError):
self.api.insert_row('unknown:uri', 1, self.datastore)
# Ensure no exception is raised
self.api.insert_row(ds.identifier, 4, self.datastore)
def load_dataset(self) -> None:
"""Test functionality to load a dataset."""
# Create a new dataset
fh = self.filestore.upload_file(CSV_FILE)
result = self.api.load_dataset(datastore=self.datastore,
filestore=self.filestore,
file_id=fh.identifier)
ds = result.dataset
resources = result.resources
assert (isinstance(ds, DatasetHandle))
ds_rows = ds.fetch_rows()
self.assertEqual(len(ds.columns), 3)
self.assertEqual(len(ds_rows), 2)
for row in ds_rows:
self.assertTrue(isinstance(row.values[1], int))
self.assertIsNotNone(resources)
self.assertEqual(resources[RESOURCE_FILEID], fh.identifier)
self.assertEqual(resources[RESOURCE_DATASET], ds.identifier)
# Delete file handle and oing the same should raise an exception
self.filestore.delete_file(fh.identifier)
with self.assertRaises(ValueError):
self.api.load_dataset(datastore=self.datastore,
filestore=self.filestore,
file_id=fh.identifier)
# Ensure exception is thrown if dataset identifier is unknown
with self.assertRaises(ValueError):
self.api.load_dataset(datastore=self.datastore,
filestore=self.filestore,
file_id='unknown:uri')
# Test loading file from external resource. Skip if DOWNLOAD_URL is None
if DOWNLOAD_URL is None:
print('Skipping download test')
return
result = self.api.load_dataset(datastore=self.datastore,
filestore=self.filestore,
url=DOWNLOAD_URL,
options=[{
'delimiter': '\t'
}])
ds = result.dataset
resources = result.resources
ds_rows = ds.fetch_rows()
self.assertEqual(len(ds.columns), 4)
self.assertEqual(len(ds_rows), 54)
self.assertIsNotNone(resources)
self.assertEqual(resources[RESOURCE_URL], DOWNLOAD_URL)
self.assertEqual(resources[RESOURCE_DATASET], ds.identifier)
# Attempt to simulate re-running without downloading again. Set the
# Uri to some fake Uri that would raise an exception if an attempt was
# made to download
url = 'some fake uri'
resources[RESOURCE_URL] = url
result = self.api.load_dataset(datastore=self.datastore,
filestore=self.filestore,
url=url,
resources=resources)
prev_id = result.dataset.identifier
self.assertEqual(result.dataset.identifier, prev_id)
# If we re-run with reload flag true a new dataset should be returned
resources[RESOURCE_URL] = DOWNLOAD_URL
result = self.api.load_dataset(datastore=self.datastore,
filestore=self.filestore,
url=DOWNLOAD_URL,
resources=resources,
reload=True,
options=[{
'delimiter': '\t'
}])
self.assertNotEqual(result.dataset.identifier, prev_id)
def move_column(self):
"""Test functionality to move a column."""
# Create a new dataset
fh = self.filestore.upload_file(CSV_FILE)
ds = self.api.load_dataset(datastore=self.datastore,
filestore=self.filestore,
file_id=fh.identifier).dataset
ds_rows = ds.fetch_rows()
# Keep track of column and row identifier
col_ids = [col.identifier for col in ds.columns]
row_ids = [row.identifier for row in ds_rows]
# Swap first two columns
c = col_ids[0]
del col_ids[0]
col_ids.insert(1, c)
result = self.api.move_column(ds.identifier,
ds.column_by_name('Name').identifier, 1,
self.datastore)
self.assertNotEqual(result.dataset.identifier, ds.identifier)
ds = self.datastore.get_dataset(result.dataset.identifier)
ds_rows = ds.fetch_rows()
self.assertEqual(ds.columns[0].name.upper(), 'Age'.upper())
self.assertEqual(ds.columns[1].name.upper(), 'Name'.upper())
self.assertEqual(ds.columns[2].name.upper(), 'Salary'.upper())
row = ds_rows[0]
self.assertEqual(row.values[0], 23)
self.assertEqual(row.values[1], 'Alice')
self.assertEqual(row.values[2], '35K')
row = ds_rows[1]
self.assertEqual(row.values[0], 32)
self.assertEqual(row.values[1], 'Bob')
self.assertEqual(row.values[2], '30K')
# Ensure that row ids haven't changed
for i in range(len(ds_rows)):
self.assertEqual(int(ds_rows[i].identifier), int(row_ids[i]))
# Swap last two columns
c = col_ids[1]
del col_ids[1]
col_ids.append(c)
result = self.api.move_column(ds.identifier,
ds.column_by_name('Salary').identifier,
1, self.datastore)
ds = self.datastore.get_dataset(result.dataset.identifier)
ds_rows = ds.fetch_rows()
self.assertEqual(ds.columns[0].name.upper(), 'Age'.upper())
self.assertEqual(ds.columns[1].name.upper(), 'Salary'.upper())
self.assertEqual(ds.columns[2].name.upper(), 'Name'.upper())
row = ds_rows[0]
self.assertEqual(row.values[0], 23)
self.assertEqual(row.values[1], '35K')
self.assertEqual(row.values[2], 'Alice')
row = ds_rows[1]
self.assertEqual(row.values[0], 32)
self.assertEqual(row.values[1], '30K')
self.assertEqual(row.values[2], 'Bob')
# Ensure that row ids haven't changed
for i in range(len(ds_rows)):
self.assertEqual(int(ds_rows[i].identifier), int(row_ids[i]))
# No changes if source and target position are the same
result = self.api.move_column(ds.identifier, ds.columns[1].identifier,
1, self.datastore)
self.assertEqual(ds.identifier, result.dataset.identifier)
# Ensure exception is thrown if dataset identifier is unknown
with self.assertRaises(MimirError):
self.api.move_column('unknown:uri', 0, 1, self.datastore)
# Raise error if source column is out of bounds
with self.assertRaises(ValueError):
self.api.move_column(ds.identifier, 40, 1, self.datastore)
# Raise error if target position is out of bounds
with self.assertRaises(ValueError):
self.api.move_column(ds.identifier,
ds.column_by_name('Name').identifier, -1,
self.datastore)
with self.assertRaises(ValueError):
self.api.move_column(ds.identifier,
ds.column_by_name('Name').identifier, 4,
self.datastore)
def move_row(self):
"""Test functionality to move a row."""
# Create a new dataset
fh = self.filestore.upload_file(CSV_FILE)
ds = self.api.load_dataset(datastore=self.datastore,
filestore=self.filestore,
file_id=fh.identifier).dataset
ds_rows = ds.fetch_rows()
# Keep track of column and row identifier
row_ids = [row.identifier for row in ds_rows]
# Swap first two rows
result = self.api.move_row(ds.identifier, row_ids[0], 1,
self.datastore)
row_ids = [row for row in reversed(row_ids)]
self.assertNotEqual(result.dataset.identifier, ds.identifier)
ds = self.datastore.get_dataset(result.dataset.identifier)
ds_rows = ds.fetch_rows()
self.assertEqual(ds.columns[0].name.upper(), 'Name'.upper())
self.assertEqual(ds.columns[1].name.upper(), 'Age'.upper())
self.assertEqual(ds.columns[2].name.upper(), 'Salary'.upper())
row = ds_rows[0]
self.assertEqual(row.values[0], 'Bob')
self.assertEqual(row.values[1], 32)
self.assertEqual(row.values[2], '30K')
row = ds_rows[1]
self.assertEqual(row.values[0], 'Alice')
self.assertEqual(row.values[1], 23)
self.assertEqual(row.values[2], '35K')
# Ensure that row ids haven't changed
for i in range(len(ds_rows)):
self.assertEqual(ds_rows[i].identifier, row_ids[i])
# Swap last two rows
result = self.api.move_row(ds.identifier, row_ids[1], 0,
self.datastore)
row_ids = [row for row in reversed(row_ids)]
ds = self.datastore.get_dataset(result.dataset.identifier)
ds_rows = ds.fetch_rows()
self.assertEqual(ds.columns[0].name.upper(), 'Name'.upper())
self.assertEqual(ds.columns[1].name.upper(), 'Age'.upper())
self.assertEqual(ds.columns[2].name.upper(), 'Salary'.upper())
row = ds_rows[0]
self.assertEqual(row.values[0], 'Alice')
self.assertEqual(row.values[1], 23)
self.assertEqual(row.values[2], '35K')
row = ds_rows[1]
self.assertEqual(row.values[0], 'Bob')
self.assertEqual(row.values[1], 32)
self.assertEqual(row.values[2], '30K')
# Ensure that row ids haven't changed
for i in range(len(ds_rows)):
self.assertEqual(int(ds_rows[i].identifier), int(row_ids[i]))
# Move first row to the end
result = self.api.move_row(ds.identifier, row_ids[0], 2,
self.datastore)
row_ids = [row for row in reversed(row_ids)]
ds = self.datastore.get_dataset(result.dataset.identifier)
ds_rows = ds.fetch_rows()
row = ds_rows[0]
self.assertEqual(row.values[0], 'Bob')
self.assertEqual(row.values[1], 32)
self.assertEqual(row.values[2], '30K')
row = ds_rows[1]
self.assertEqual(row.values[0], 'Alice')
self.assertEqual(row.values[1], 23)
self.assertEqual(row.values[2], '35K')
# Ensure that row ids haven't changed
# ## July 16, 2020 by OK: Bug in mimir that is going to take a bunch of
# ## heavy lifting to fix: https://github.com/UBOdin/mimir-api/issues/11
# for i in range(len(ds_rows)):
# self.assertEqual(int(ds_rows[i].identifier), int(row_ids[i]))
# No changes if source and target position are the same
result = self.api.move_row(ds.identifier, row_ids[1], 1,
self.datastore)
# ## July 21, 2020 by OK: It would be fantastic if we could easily detect
# no-op vizual, but for now skip this check
#self.assertEqual(ds.identifier, result.dataset.identifier)
# Ensure exception is thrown if dataset identifier is unknown
with self.assertRaises(MimirError):
self.api.move_row('unknown:uri', 0, 1, self.datastore)
# Raise error if target position is out of bounds
# ## July 21, 2020 by OK: Skipping this check for now
# with self.assertRaises(ValueError):
# self.api.move_row(ds.identifier, 0, -1, self.datastore)
# with self.assertRaises(ValueError):
# self.api.move_row(ds.identifier, 1, 4, self.datastore)
def rename_column(self):
"""Test functionality to rename a column."""
# Create a new dataset
fh = self.filestore.upload_file(CSV_FILE)
ds = self.api.load_dataset(datastore=self.datastore,
filestore=self.filestore,
file_id=fh.identifier).dataset
ds_rows = ds.fetch_rows()
# Keep track of column and row identifier
row_ids = [row.identifier for row in ds_rows]
# Rename first column to Firstname
result = self.api.rename_column(ds.identifier,
ds.column_by_name('Name').identifier,
'Firstname', self.datastore)
self.assertNotEqual(result.dataset.identifier, ds.identifier)
ds = self.datastore.get_dataset(result.dataset.identifier)
self.assertEqual(ds.columns[0].name.upper(), 'Firstname'.upper())
self.assertEqual(ds.columns[1].name.upper(), 'Age'.upper())
self.assertEqual(ds.columns[2].name.upper(), 'Salary'.upper())
result = self.api.rename_column(ds.identifier,
ds.column_by_name('Age').identifier,
'BDate', self.datastore)
ds = self.datastore.get_dataset(result.dataset.identifier)
ds_rows = ds.fetch_rows()
self.assertEqual(ds.columns[0].name.upper(), 'Firstname'.upper())
self.assertEqual(ds.columns[1].name, 'BDate')
self.assertEqual(ds.columns[2].name.upper(), 'Salary'.upper())
# Ensure that row ids haven't changed
for i in range(len(ds_rows)):
self.assertEqual(int(ds_rows[i].identifier), int(row_ids[i]))
# No changes if the old and new column name are the same (with exception
# to upper and lower cases).
result = self.api.rename_column(ds.identifier,
ds.column_by_name('BDate').identifier,
'BDate', self.datastore)
# ## July 21, 2020 by OK: It would be fantastic if we could easily detect
# no-op vizual, but for now skip this check
# self.assertEqual(ds.identifier, result.dataset.identifier)
# Ensure exception is thrown if dataset identifier is unknown
with self.assertRaises(MimirError):
self.api.rename_column('unknown:uri', 0, 'Firstname',
self.datastore)
# Ensure exception is thrown for invalid column id
with self.assertRaises(ValueError):
self.api.rename_column(ds.identifier, 500, 'BDate', self.datastore)
def sequence_of_steps(self):
"""Test sequence of calls that modify a dataset."""
# Create a new dataset
fh = self.filestore.upload_file(CSV_FILE)
ds = self.api.load_dataset(datastore=self.datastore,
filestore=self.filestore,
file_id=fh.identifier).dataset
ds = self.api.insert_row(ds.identifier, 1, self.datastore).dataset
row_ids = [row.identifier for row in ds.fetch_rows()]
row0 = row_ids[0]
row1 = row_ids[1]
row2 = row_ids[2]
ds = self.api.insert_column(ds.identifier, 3, 'HDate',
self.datastore).dataset
ds = self.api.update_cell(ds.identifier,
ds.column_by_name('HDate').identifier, row0,
'180', self.datastore).dataset
ds = self.api.update_cell(ds.identifier,
ds.column_by_name('HDate').identifier, row2,
'160', self.datastore).dataset
ds = self.api.rename_column(ds.identifier,
ds.column_by_name('HDate').identifier,
'Height', self.datastore).dataset
ds = self.api.update_cell(ds.identifier,
ds.column_by_name('Height').identifier, row1,
'170', self.datastore).dataset
ds = self.api.move_row(ds.identifier, row1, 2, self.datastore).dataset
ds = self.api.update_cell(ds.identifier,
ds.column_by_name('Name').identifier, row2,
'Carla', self.datastore).dataset
ds = self.api.update_cell(ds.identifier,
ds.column_by_name('Age').identifier, row2,
'45', self.datastore).dataset
ds = self.api.update_cell(ds.identifier,
ds.column_by_name('Salary').identifier, row2,
'56K', self.datastore).dataset
ds = self.api.move_column(ds.identifier,
ds.column_by_name('Salary').identifier, 4,
self.datastore).dataset
ds = self.api.delete_column(ds.identifier,
ds.column_by_name('Age').identifier,
self.datastore).dataset
ds = self.api.delete_row(ds.identifier, row0, self.datastore).dataset
ds = self.api.delete_row(ds.identifier, row1, self.datastore).dataset
ds = self.datastore.get_dataset(ds.identifier)
ds_rows = ds.fetch_rows()
names = ['Name', 'Height', 'Salary']
self.assertEqual(len(ds.columns), len(names))
for i in range(len(names)):
col = ds.columns[i]
self.assertEqual(col.name.upper(), names[i].upper())
self.assertEqual(len(ds_rows), 1)
self.assertEqual(ds_rows[0].values, ['Carla', '160', '56K'])
def sort_dataset(self):
"""Test sorting a dataset."""
# Create a new dataset
fh = self.filestore.upload_file(SORT_FILE)
ds = self.api.load_dataset(datastore=self.datastore,
filestore=self.filestore,
file_id=fh.identifier).dataset
result = self.api.sort_dataset(ds.identifier, [1, 2, 0],
[False, False, True], self.datastore)
ds = self.datastore.get_dataset(result.dataset.identifier)
rows = ds.fetch_rows()
names = ['Alice', 'Bob', 'Dave', 'Gertrud', 'Frank']
result = list()
for row in rows:
name = row.values[0]
if name in names:
result.append(name)
for i in range(len(names)):
self.assertEqual(names[i], result[i])
result = self.api.sort_dataset(ds.identifier, [2, 1, 0],
[True, False, True], self.datastore)
ds = self.datastore.get_dataset(result.dataset.identifier)
rows = ds.fetch_rows()
names = ['Gertrud', 'Frank', 'Bob', 'Alice', 'Dave']
result = list()
for row in rows:
name = row.values[0]
if name in names:
result.append(name)
for i in range(len(names)):
self.assertEqual(names[i], result[i])
# Raises error for invalid column identifier
with self.assertRaises(ValueError):
self.api.sort_dataset(ds.identifier, [2, 10, 0],
[True, False, True], self.datastore)
def update_cell(self):
"""Test functionality to update a dataset cell."""
# Create a new dataset
fh = self.filestore.upload_file(CSV_FILE)
ds = self.api.load_dataset(datastore=self.datastore,
filestore=self.filestore,
file_id=fh.identifier).dataset
ds_rows = ds.fetch_rows()
# Keep track of column and row identifier
row_ids = [row.identifier for row in ds_rows]
# Update cell [0, 0]. Ensure that one row was updated and a new
# identifier is generated. Also ensure that the resulting datasets
# has the new value in cell [0, 0]
row_id = row_ids[0]
result = self.api.update_cell(ds.identifier, 0, row_id, 'MyValue',
self.datastore)
self.assertNotEqual(ds.identifier, result.dataset.identifier)
ds = self.datastore.get_dataset(result.dataset.identifier)
ds_rows = ds.fetch_rows()
row = None
for r in ds.fetch_rows():
if r.identifier == row_id:
row = r
break
self.assertEqual(row.values[0], 'MyValue')
result = self.api.update_cell(ds.identifier,
ds.column_by_name('Name').identifier,
row_id, 'AValue', self.datastore)
ds = self.datastore.get_dataset(result.dataset.identifier)
ds_rows = ds.fetch_rows()
row = None
for r in ds.fetch_rows():
if r.identifier == row_id:
row = r
break
self.assertEqual(row.values[0], 'AValue')
self.assertEqual(row.values[ds.column_index('Name')], 'AValue')
# Ensure that row ids haven't changed
for i in range(len(ds_rows)):
self.assertEqual(int(ds_rows[i].identifier), int(row_ids[i]))
# Set value to None
result = self.api.update_cell(ds.identifier,
ds.column_by_name('Name').identifier,
row_id, None, self.datastore)
ds = self.datastore.get_dataset(result.dataset.identifier)
ds_rows = ds.fetch_rows()
row = None
for r in ds.fetch_rows():
if r.identifier == row_id:
row = r
break
self.assertIsNone(row.values[0])
self.assertIsNone(row.values[ds.column_index('Name')])
# Ensure exception is thrown if dataset is unknown
with self.assertRaises(MimirError):
self.api.update_cell('unknown:uri', 0, 0, 'MyValue',
self.datastore)