def test_extract_first_without_default(element, expr):
extractor = JSONExtractor(expr)
with pytest.raises(ExtractError) as catch:
extractor.extract_first(element)
exc = catch.value
assert len(exc.extractors) == 1
assert exc.extractors[0] is extractor
assert exc.element is element
def test_extract_first(element, expr, expect, build_first):
extractor = JSONExtractor(expr)
if build_first:
extractor.build()
assert expect == extractor.extract_first(element, default="default")
def test_extract_first(element, expr, expect):
extractor = JSONExtractor(expr)
assert expect == extractor.extract_first(element, default="default")
