def test_fetchjson_list_fails():
"""Json describing a list rather than a dict should fail if no outkey."""
context = Context({
'ok1': 'ov1',
'fetchJson': {
'path': '/arb/arbfile'}})
with patch('pypyr.steps.fetchjson.open', mock_open(read_data='[1,2,3]')):
with pytest.raises(TypeError):
filefetcher.run_step(context)
def test_fetchjson_no_path_raises():
"""None path raises."""
context = Context({
'k1': 'v1'})
with pytest.raises(KeyNotInContextError) as err_info:
filefetcher.run_step(context)
assert str(err_info.value) == ("context['fetchJson'] "
"doesn't exist. It must exist for "
"pypyr.steps.fetchjson.")
def test_fetchjson_empty_path_raises():
"""Empty path raises."""
context = Context({
'fetchJson': {
'path': None}})
with pytest.raises(KeyInContextHasNoValueError) as err_info:
filefetcher.run_step(context)
assert str(err_info.value) == ("context['fetchJson']['path'] must have a "
"value for pypyr.steps.fetchjson.")
def test_fetchjson_with_destination():
"""Json writes to destination key."""
context = Context({
'fetchJson': {
'path': '/arb/arbfile',
'key': 'outkey'}})
with patch('pypyr.steps.fetchjson.open', mock_open(read_data='[1,2,3]')):
filefetcher.run_step(context)
assert context['outkey'] == [1, 2, 3]
assert len(context) == 2
def test_fetchjson_with_destination_formatting():
"""Json writes to destination key found by formatting expression."""
context = Context({
'keyhere': {'sub': ['outkey', 2, 3]},
'fetchJson': {
'path': '/arb/arbfile',
'key': '{keyhere[sub][0]}'}})
with patch('pypyr.steps.fetchjson.open', mock_open(
read_data='{"1": 2,"2": 3}')):
filefetcher.run_step(context)
assert len(context) == 3
assert context['outkey'] == {'1': 2, '2': 3}
assert context['keyhere'] == {'sub': ['outkey', 2, 3]}
def test_json_pass_with_string():
"""Relative path to json should succeed with string input.
Strictly speaking not a unit test.
"""
context = Context({
'ok1': 'ov1',
'fetchJson': './tests/testfiles/test.json'})
filefetcher.run_step(context)
assert context, "context shouldn't be None"
assert len(context) == 5, "context should have 5 items"
assert context['ok1'] == 'ov1'
assert 'fetchJsonPath' not in context
assert context["key1"] == "value1", "key1 should be value2"
assert context["key2"] == "value2", "key2 should be value2"
assert context["key3"] == "value3", "key3 should be value2"
def test_json_pass_with_path_substitution():
"""Relative path to json should succeed, with string subsitution on path.
Strictly speaking not a unit test.
"""
context = Context({
'ok1': 'ov1',
'fileName': 'test',
'fetchJson': {
'path': './tests/testfiles/{fileName}.json'}})
filefetcher.run_step(context)
assert context, "context shouldn't be None"
assert len(context) == 6, "context should have 6 items"
assert context['ok1'] == 'ov1'
assert 'fetchJsonPath' not in context
assert context["key1"] == "value1", "key1 should be value2"
assert context["key2"] == "value2", "key2 should be value2"
assert context["key3"] == "value3", "key3 should be value2"