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import pytest
from scrapy.exceptions import UsageError
from scrapy.settings import BaseSettings, Settings
from scrapy.utils.conf import (
arglist_to_dict,
build_component_list,
feed_complete_default_values_from_settings,
feed_process_params_from_cli,
)
class TestBuildComponentList:
def test_build_dict(self):
d = {"one": 1, "two": None, "three": 8, "four": 4}
assert build_component_list(d, convert=lambda x: x) == ["one", "four", "three"]
def test_duplicate_components_in_basesettings(self):
# Higher priority takes precedence
duplicate_bs = BaseSettings({"one": 1, "two": 2}, priority=0)
duplicate_bs.set("ONE", 4, priority=10)
assert build_component_list(duplicate_bs, convert=lambda x: x.lower()) == [
"two",
"one",
]
duplicate_bs.set("one", duplicate_bs["one"], priority=20)
assert build_component_list(duplicate_bs, convert=lambda x: x.lower()) == [
"one",
"two",
]
# Same priority raises ValueError
duplicate_bs.set("ONE", duplicate_bs["ONE"], priority=20)
with pytest.raises(
ValueError, match="Some paths in .* convert to the same object"
):
build_component_list(duplicate_bs, convert=lambda x: x.lower())
def test_valid_numbers(self):
# work well with None and numeric values
d = {"a": 10, "b": None, "c": 15, "d": 5.0}
assert build_component_list(d, convert=lambda x: x) == ["d", "a", "c"]
d = {
"a": 33333333333333333333,
"b": 11111111111111111111,
"c": 22222222222222222222,
}
assert build_component_list(d, convert=lambda x: x) == ["b", "c", "a"]
class TestUtilsConf:
def test_arglist_to_dict(self):
assert arglist_to_dict(["arg1=val1", "arg2=val2"]) == {
"arg1": "val1",
"arg2": "val2",
}
class TestFeedExportConfig:
def test_feed_export_config_invalid_format(self):
settings = Settings()
with pytest.raises(UsageError):
feed_process_params_from_cli(settings, ["items.dat"])
def test_feed_export_config_mismatch(self):
settings = Settings()
with pytest.raises(UsageError):
feed_process_params_from_cli(settings, ["items1.dat", "items2.dat"])
def test_feed_export_config_explicit_formats(self):
settings = Settings()
assert {
"items_1.dat": {"format": "json"},
"items_2.dat": {"format": "xml"},
"items_3.dat": {"format": "csv"},
} == feed_process_params_from_cli(
settings, ["items_1.dat:json", "items_2.dat:xml", "items_3.dat:csv"]
)
def test_feed_export_config_implicit_formats(self):
settings = Settings()
assert {
"items_1.json": {"format": "json"},
"items_2.xml": {"format": "xml"},
"items_3.csv": {"format": "csv"},
} == feed_process_params_from_cli(
settings, ["items_1.json", "items_2.xml", "items_3.csv"]
)
def test_feed_export_config_stdout(self):
settings = Settings()
assert {"stdout:": {"format": "pickle"}} == feed_process_params_from_cli(
settings, ["-:pickle"]
)
def test_feed_export_config_overwrite(self):
settings = Settings()
assert {
"output.json": {"format": "json", "overwrite": True}
} == feed_process_params_from_cli(
settings, [], overwrite_output=["output.json"]
)
def test_output_and_overwrite_output(self):
with pytest.raises(UsageError):
feed_process_params_from_cli(
Settings(), ["output1.json"], overwrite_output=["output2.json"]
)
def test_feed_complete_default_values_from_settings_empty(self):
feed = {}
settings = Settings(
{
"FEED_EXPORT_ENCODING": "custom encoding",
"FEED_EXPORT_FIELDS": ["f1", "f2", "f3"],
"FEED_EXPORT_INDENT": 42,
"FEED_STORE_EMPTY": True,
"FEED_URI_PARAMS": (1, 2, 3, 4),
"FEED_EXPORT_BATCH_ITEM_COUNT": 2,
}
)
new_feed = feed_complete_default_values_from_settings(feed, settings)
assert new_feed == {
"encoding": "custom encoding",
"fields": ["f1", "f2", "f3"],
"indent": 42,
"store_empty": True,
"uri_params": (1, 2, 3, 4),
"batch_item_count": 2,
"item_export_kwargs": {},
}
def test_feed_complete_default_values_from_settings_non_empty(self):
feed = {
"encoding": "other encoding",
"fields": None,
}
settings = Settings(
{
"FEED_EXPORT_ENCODING": "custom encoding",
"FEED_EXPORT_FIELDS": ["f1", "f2", "f3"],
"FEED_EXPORT_INDENT": 42,
"FEED_STORE_EMPTY": True,
"FEED_EXPORT_BATCH_ITEM_COUNT": 2,
}
)
new_feed = feed_complete_default_values_from_settings(feed, settings)
assert new_feed == {
"encoding": "other encoding",
"fields": None,
"indent": 42,
"store_empty": True,
"uri_params": None,
"batch_item_count": 2,
"item_export_kwargs": {},
}
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