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import pytest
from syrupy.constants import DIFF_LINE_COUNT_LIMIT
from syrupy.extensions.base import SnapshotReporter
class SnapshotReporterNoContext(SnapshotReporter):
@property
def _context_line_count(self) -> int:
return 0
@pytest.mark.parametrize("Reporter", [SnapshotReporter, SnapshotReporterNoContext])
class TestSnapshotReporter:
@pytest.mark.parametrize(
"a, b",
[
(
"line 0\nline 1\nline 02\nline 3\nline 4\r\nline 5\nline 6\nline 7",
"line 0\nline 1\nline 2\r\nline 3\nline 04\nline 5\nline 6\nline 7",
),
(
"line 0\nline 1\nline 2\nline 3\t\nline 4\nline 5\nline 6\nline 7",
"line 0\nline 1\nline 2\nline 3 \nline 4\nline 5\nline 6\nline 7",
),
(
"line 0\nline 1\nline 2\nline 3\r\nline 4\nline 5\nline 6\nline 7",
"line 0\rline 1\nline 2\r\nline 3\nline 4\nline 5\nline 6\nline 7",
),
],
ids=lambda _: "",
)
def test_diff_lines(self, a, b, Reporter, snapshot, osenv):
with osenv(NO_COLOR="true"):
assert "\n".join(Reporter().diff_lines(a, b)) == snapshot
def test_diff_large(self, Reporter, snapshot, osenv):
n_count = 3000 + DIFF_LINE_COUNT_LIMIT * 2
obj_a = [str(x) + ("a" * 20) for x in range(n_count)]
obj_b = [
line_a + ("b" if n > DIFF_LINE_COUNT_LIMIT else "")
for n, line_a in enumerate(obj_a)
]
str_a = "\n".join(obj_a)
str_b = "\n".join(obj_b)
with osenv(NO_COLOR="true"):
assert "\n".join(Reporter().diff_lines(str_a, str_b)) == snapshot
def test_diff_large_lines(self, Reporter, snapshot, osenv):
n_count = 1000000
obj_a = [str(x) + ("a" * n_count) for x in range(20)]
obj_b = [line_a[: n_count // 2] + "b" * n_count for line_a in obj_a]
str_a = "\n".join(obj_a)
str_b = "\n".join(obj_b)
with osenv(NO_COLOR="true"):
assert "\n".join(Reporter().diff_lines(str_a, str_b)) == snapshot
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