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Fix diff parser generation for empty files

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Dave Halter
2019-01-13 23:38:35 +01:00
parent 55247a5a2c
commit 76c5754b76
1 changed files with 5 additions and 3 deletions
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8
test/fuzz_diff_parser.py
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@@ -99,11 +99,12 @@ class FileModification:
lines = list(lines) lines = list(lines)
for _ in range(change_count): for _ in range(change_count):
if not lines:
break
rand = random.randint(1, 4) rand = random.randint(1, 4)
if rand == 1: if rand == 1:
if len(lines) == 1:
# We cannot delete every line, that doesn't make sense to
# fuzz and it would be annoying to rewrite everything here.
continue
l = LineDeletion(random_line()) l = LineDeletion(random_line())
elif rand == 2: elif rand == 2:
# Copy / Insertion # Copy / Insertion
@@ -127,6 +128,7 @@ class FileModification:
# fuzzer is just way more effective here. # fuzzer is just way more effective here.
random_string += random.choice(_random_python_fragments) random_string += random.choice(_random_python_fragments)
l = LineReplacement(line_nr, line[:column] + random_string + line[column:]) l = LineReplacement(line_nr, line[:column] + random_string + line[column:])
l.apply(lines)
yield l yield l
def __init__(self, modification_list): def __init__(self, modification_list):