mirror of
https://github.com/qurator-spk/dinglehopper.git
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Reformat using black
This commit is contained in:
Benjamin Rosemann
parent
5277593bdb
commit
2a215a1062
2 changed files with 273 additions and 171 deletions
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@ -29,20 +29,16 @@ def flexible_character_accuracy(gt: str, ocr: str) -> Tuple[float, List["Match"]
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:return: Score between 0 and 1 and match objects.
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"""
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best_score = -float('inf')
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best_score = -float("inf")
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best_matches = []
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# TODO: this should be configurable
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combinations = product(range(15, 31, 5),
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range(0, 24, 3),
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range(0, 4, 1),
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range(0, 6, 1))
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combinations = product(
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range(15, 31, 5), range(0, 24, 3), range(0, 4, 1), range(0, 6, 1)
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)
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# TODO: place to parallelize the algorithm
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for (edit_dist, length_diff, offset, length) in combinations:
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coef = Coefficients(
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edit_dist=edit_dist,
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length_diff=length_diff,
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offset=offset,
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length=length
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edit_dist=edit_dist, length_diff=length_diff, offset=offset, length=length
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)
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# Steps 1 - 6 of the flexible character accuracy algorithm.
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matches = match_with_coefficients(gt, ocr, coef)
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@ -79,17 +75,21 @@ def match_with_coefficients(gt: str, ocr: str, coef: "Coefficients") -> List["Ma
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# Step 6 of the flexible character accuracy algorithm.
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# remaining lines are considered as deletes and inserts
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deletes = [distance(line, Part(text="", line=line.line, start=line.start))
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for line in gt_lines]
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inserts = [distance(Part(text="", line=line.line, start=line.start), line)
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for line in ocr_lines]
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deletes = [
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distance(line, Part(text="", line=line.line, start=line.start))
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for line in gt_lines
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]
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inserts = [
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distance(Part(text="", line=line.line, start=line.start), line)
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for line in ocr_lines
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]
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return [*matches, *deletes, *inserts]
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def match_longest_gt_lines(gt_lines: List["Part"],
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ocr_lines: List["Part"],
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coef: "Coefficients") -> Optional["Match"]:
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def match_longest_gt_lines(
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gt_lines: List["Part"], ocr_lines: List["Part"], coef: "Coefficients"
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) -> Optional["Match"]:
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"""Find the best match for the longest line(s) in ground truth.
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The longest lines in ground truth are matched against lines in ocr to find the
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@ -99,7 +99,7 @@ def match_longest_gt_lines(gt_lines: List["Part"],
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:return: Possible match object.
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"""
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best_score, best_match, best_gt, best_ocr = -float('inf'), None, None, None
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best_score, best_match, best_gt, best_ocr = -float("inf"), None, None, None
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if not ocr_lines:
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return best_match
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@ -126,10 +126,9 @@ def match_longest_gt_lines(gt_lines: List["Part"],
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return best_match
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def match_gt_line(gt_line: "Part",
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ocr_lines: List["Part"],
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coef: "Coefficients") -> Tuple[Optional["Match"],
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Optional["Part"]]:
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def match_gt_line(
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gt_line: "Part", ocr_lines: List["Part"], coef: "Coefficients"
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) -> Tuple[Optional["Match"], Optional["Part"]]:
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"""Match the given ground truth line against all the lines in ocr.
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Reference: contains steps 3 of the flexible character accuracy algorithm.
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@ -138,19 +137,18 @@ def match_gt_line(gt_line: "Part",
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:return: Match object and the matched ocr line.
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"""
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min_penalty = float('inf')
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min_penalty = float("inf")
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best_match, best_ocr = None, None
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for ocr_line in [*ocr_lines]:
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match = match_lines(gt_line, ocr_line)
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if match:
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penalty = calculate_penalty(gt_line, ocr_line, match, coef)
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if penalty < min_penalty:
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min_penalty, best_match, best_ocr = penalty, match, ocr_line
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return best_match, best_ocr
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def remove_or_split(original: "Part",
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match: "Part",
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lines: List["Part"]) -> bool:
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def remove_or_split(original: "Part", match: "Part", lines: List["Part"]) -> bool:
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"""Removes the matched line or splits it into parts.
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Reference: contains step 4 of the flexible character accuracy algorithm.
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@ -187,17 +185,24 @@ def match_lines(gt_line: "Part", ocr_line: "Part") -> Optional["Match"]:
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if min_length == 0:
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return best_match
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length_diff = gt_line.length - ocr_line.length
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min_edit_dist = float('inf')
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min_edit_dist = float("inf")
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gt_parts = [(i, gt_line.substring(rel_start=i, rel_end=i + min_length))
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for i in range(0, max(1, length_diff + 1))]
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ocr_parts = [(j, ocr_line.substring(rel_start=j, rel_end=j + min_length))
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for j in range(0, max(1, -1 * length_diff + 1))]
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gt_parts = [
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(i, gt_line.substring(rel_start=i, rel_end=i + min_length))
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for i in range(0, max(1, length_diff + 1))
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]
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ocr_parts = [
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(j, ocr_line.substring(rel_start=j, rel_end=j + min_length))
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for j in range(0, max(1, -1 * length_diff + 1))
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]
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# add full line and empty line match
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gt_parts = [*gt_parts, (0, gt_line), (0, gt_line)]
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ocr_parts = [*ocr_parts, (0, ocr_line),
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(0, Part(text="", line=gt_line.line, start=gt_line.start))]
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ocr_parts = [
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*ocr_parts,
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(0, ocr_line),
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(0, Part(text="", line=gt_line.line, start=gt_line.start)),
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]
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for i, gt_part in gt_parts:
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for j, ocr_part in ocr_parts:
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@ -211,8 +216,10 @@ def match_lines(gt_line: "Part", ocr_line: "Part") -> Optional["Match"]:
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part_length = best_match.gt.length
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additional_length = best_match.dist.delete + best_match.dist.replace
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for k in range(part_length + 1, part_length + additional_length + 1):
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match = distance(gt_line.substring(rel_start=best_i, rel_end=best_i + k),
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ocr_line.substring(rel_start=best_j, rel_end=best_j + k))
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match = distance(
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gt_line.substring(rel_start=best_i, rel_end=best_i + k),
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ocr_line.substring(rel_start=best_j, rel_end=best_j + k),
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)
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edit_dist = score_edit_distance(match)
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if edit_dist < min_edit_dist:
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min_edit_dist = edit_dist
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@ -247,8 +254,9 @@ def score_edit_distance(match: "Match") -> int:
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return match.dist.delete + match.dist.insert + 2 * match.dist.replace
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def calculate_penalty(gt: "Part", ocr: "Part", match: "Match",
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coef: "Coefficients") -> float:
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def calculate_penalty(
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gt: "Part", ocr: "Part", match: "Match", coef: "Coefficients"
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) -> float:
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"""Calculate the penalty for a given match.
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For details and discussion see Section 3 in doi:10.1016/j.patrec.2020.02.003.
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@ -262,10 +270,12 @@ def calculate_penalty(gt: "Part", ocr: "Part", match: "Match",
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if length_diff > 1:
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substring_pos = max(match.gt.start - gt.start, match.ocr.start - ocr.start)
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offset = length_diff / 2 - abs(substring_pos - length_diff / 2)
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return (min_edit_dist * coef.edit_dist
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return (
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min_edit_dist * coef.edit_dist
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+ length_diff * coef.length_diff
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+ offset * coef.offset
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- substring_length * coef.length)
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- substring_length * coef.length
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)
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def character_accuracy_for_matches(matches: List["Match"]) -> float:
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@ -274,8 +284,9 @@ def character_accuracy_for_matches(matches: List["Match"]) -> float:
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See other `character_accuracy` for details.
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"""
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agg: Counter = reduce(lambda acc, match: acc + Counter(match.dist._asdict()),
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matches, Counter())
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agg: Counter = reduce(
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lambda acc, match: acc + Counter(match.dist._asdict()), matches, Counter()
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)
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score = character_accuracy(Distance(**agg))
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return score
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@ -299,9 +310,9 @@ def character_accuracy(edits: "Distance") -> float:
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chars = edits.match + edits.replace + edits.delete
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if not chars and not errors:
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# comparison of empty strings is considered a full match
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score = 1
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score = 1.0
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else:
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score = 1 - errors / chars
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score = 1.0 - errors / chars
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return score
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@ -315,9 +326,11 @@ def initialize_lines(text: str) -> List["Part"]:
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:param text: Text to split into lines.
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:return: List of sorted line objects.
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"""
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lines = [Part(text=line, line=i, start=0)
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lines = [
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Part(text=line, line=i, start=0)
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for i, line in enumerate(text.splitlines())
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if len(line) > 0]
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if len(line) > 0
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]
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lines.sort(key=lambda x: x.length, reverse=True)
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return lines
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@ -348,6 +361,7 @@ class Part(NamedTuple):
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This data object is maintained to be able to reproduce the original text.
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"""
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text: str = ""
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line: int = 0
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start: int = 0
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@ -392,6 +406,7 @@ class Part(NamedTuple):
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class Distance(NamedTuple):
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"""Represent distance between two sequences."""
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match: int = 0
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replace: int = 0
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delete: int = 0
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@ -400,6 +415,7 @@ class Distance(NamedTuple):
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class Match(NamedTuple):
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"""Represent a calculated match between ground truth and the ocr result."""
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gt: "Part"
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ocr: "Part"
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dist: "Distance"
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@ -411,6 +427,7 @@ class Coefficients(NamedTuple):
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See Section 3 in doi:10.1016/j.patrec.2020.02.003
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"""
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edit_dist: int = 25
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length_diff: int = 20
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offset: int = 1
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@ -35,37 +35,31 @@ COMPLEX_CASES = [
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EXTENDED_CASES = [
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# See figure 4 in 10.1016/j.patrec.2020.02.003
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# A: No errors
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((0, 1, 2, 3, 4, 11, 5, 6, 7, 8, 9),
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(0, 1, 2, 3, 4, 11, 5, 6, 7, 8, 9),
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1, 1),
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((0, 1, 2, 3, 4, 11, 5, 6, 7, 8, 9), (0, 1, 2, 3, 4, 11, 5, 6, 7, 8, 9), 1, 1),
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# B: Different ordering of text blocks
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((0, 1, 2, 3, 4, 11, 5, 6, 7, 8, 9),
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(5, 6, 7, 8, 9, 11, 0, 1, 2, 3, 4),
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1, 1),
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((0, 1, 2, 3, 4, 11, 5, 6, 7, 8, 9), (5, 6, 7, 8, 9, 11, 0, 1, 2, 3, 4), 1, 1),
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# C: Merge across columns
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((0, 1, 2, 11, 3, 4, 11, 5, 6, 7, 11, 8, 9),
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(
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(0, 1, 2, 11, 3, 4, 11, 5, 6, 7, 11, 8, 9),
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(0, 1, 2, 5, 6, 7, 11, 3, 4, 8, 9),
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1, 0.964),
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1,
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0.964,
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),
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# D: Over-segmentation
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((0, 1, 2, 3, 4, 11, 5, 6, 7, 8, 9),
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(
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(0, 1, 2, 3, 4, 11, 5, 6, 7, 8, 9),
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(0, 1, 2, 11, 5, 6, 7, 11, 3, 4, 11, 8, 9),
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1, 0.966),
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1,
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0.966,
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),
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# E: Part missing
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((0, 1, 2, 3, 4, 11, 5, 6, 7, 8, 9),
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(0, 1, 2, 3, 4),
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1, 0.50),
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((0, 1, 2, 3, 4, 11, 5, 6, 7, 8, 9), (0, 1, 2, 3, 4), 1, 0.50),
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# E.2: Part missing
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((0, 1, 2, 3, 4, 11, 5, 6, 7, 8, 9),
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(5, 6, 7, 8, 9),
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1, 0.50),
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((0, 1, 2, 3, 4, 11, 5, 6, 7, 8, 9), (5, 6, 7, 8, 9), 1, 0.50),
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# F: All missing
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((0, 1, 2, 3, 4, 11, 5, 6, 7, 8, 9),
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(),
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1, 0),
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((0, 1, 2, 3, 4, 11, 5, 6, 7, 8, 9), (), 1, 0),
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# G: Added parts
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((0, 1, 2, 3, 4),
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(0, 1, 2, 3, 4, 11, 5, 6),
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1, 0.621),
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((0, 1, 2, 3, 4), (0, 1, 2, 3, 4, 11, 5, 6), 1, 0.621),
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]
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EDIT_ARGS = "gt,ocr,expected_dist"
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@ -73,8 +67,11 @@ EDIT_ARGS = "gt,ocr,expected_dist"
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SIMPLE_EDITS = [
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(Part(text="a"), Part(text="a"), Distance(match=1)),
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(Part(text="aaa"), Part(text="aaa"), Distance(match=3)),
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(Part(text="abcd"), Part(text="beed"),
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Distance(match=2, replace=1, insert=1, delete=1)),
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(
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Part(text="abcd"),
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Part(text="beed"),
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Distance(match=2, replace=1, insert=1, delete=1),
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),
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]
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@ -83,9 +80,20 @@ def extended_case_to_text(gt, ocr):
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See figure 4 in 10.1016/j.patrec.2020.02.003
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"""
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sentence = ("Eight", "happy", "frogs", "scuba", "dived",
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"Jenny", "chick", "flaps", "white", "wings",
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"", "\n")
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sentence = (
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"Eight",
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"happy",
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"frogs",
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"scuba",
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"dived",
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"Jenny",
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"chick",
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"flaps",
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"white",
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"wings",
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"",
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"\n",
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)
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gt_sentence = " ".join(sentence[i] for i in gt).replace(" \n ", "\n")
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ocr_sentence = " ".join(sentence[i] for i in ocr).replace(" \n ", "\n")
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@ -98,22 +106,35 @@ def test_flexible_character_accuracy_simple(gt, ocr, first_line_score, all_line_
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assert score == pytest.approx(all_line_score)
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@pytest.mark.parametrize("config,ocr", [
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("Config I",
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"1 hav\nnospecial\ntalents.\nI am one\npassionate\ncuriousity.\"\nAlberto\nEmstein"
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@pytest.mark.parametrize(
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"config,ocr",
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[
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(
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"Config I",
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"1 hav\nnospecial\ntalents.\n"
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'I am one\npassionate\ncuriousity."\n'
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"Alberto\nEmstein",
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),
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("Config II",
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"1 hav\nnospecial\ntalents. Alberto\nI am one Emstein\npassionate\ncuriousity.\""
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(
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"Config II",
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'1 hav\nnospecial\ntalents. Alberto\n'
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'I am one Emstein\npassionate\ncuriousity."',
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),
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("Config III",
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"Alberto\nEmstein\n1 hav\nnospecial\ntalents.\nI am one\npassionate\ncuriousity.\""
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(
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"Config III",
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'Alberto\nEmstein\n'
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'1 hav\nnospecial\ntalents.\n'
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'I am one\npassionate\ncuriousity."',
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),
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])
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],
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)
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def test_flexible_character_accuracy(config, ocr):
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"""Tests from figure 3 in the paper."""
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gt = "\"I have\nno special\ntalent." \
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"\nI am only\npassionately\ncurious.\"" \
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"\nAlbert\nEinstein"
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gt = (
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'"I have\nno special\ntalent.\n'
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'I am only\npassionately\ncurious."\n'
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"Albert\nEinstein"
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)
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replacements, inserts, deletes = 3, 5, 7
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chars = len(gt) - gt.count("\n")
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assert chars == 68
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@ -127,21 +148,27 @@ def test_flexible_character_accuracy(config, ocr):
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replacements += 1
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deletes -= 1
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expected_dist = Distance(match=chars - deletes - replacements, replace=replacements,
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insert=inserts, delete=deletes)
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expected_dist = Distance(
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match=chars - deletes - replacements,
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replace=replacements,
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insert=inserts,
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delete=deletes,
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)
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expected_score = character_accuracy(expected_dist)
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result, matches = flexible_character_accuracy(gt, ocr)
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agg = reduce(lambda acc, match: acc + Counter(match.dist._asdict()),
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matches, Counter())
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agg = reduce(
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lambda acc, match: acc + Counter(match.dist._asdict()), matches, Counter()
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)
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dist = Distance(**agg)
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assert dist == expected_dist
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assert result == pytest.approx(expected_score, abs=0.0005)
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@pytest.mark.parametrize(CASE_ARGS, EXTENDED_CASES)
|
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def test_flexible_character_accuracy_extended(gt, ocr, first_line_score,
|
||||
all_line_score):
|
||||
def test_flexible_character_accuracy_extended(
|
||||
gt, ocr, first_line_score, all_line_score
|
||||
):
|
||||
"""Tests from figure 4 in the paper."""
|
||||
gt_sentence, ocr_sentence = extended_case_to_text(gt, ocr)
|
||||
result, _ = flexible_character_accuracy(gt_sentence, ocr_sentence)
|
||||
|
|
@ -170,10 +197,13 @@ def test_match_longest_gt_lines(gt, ocr, first_line_score, all_line_score):
|
|||
assert score == pytest.approx(first_line_score)
|
||||
|
||||
|
||||
@pytest.mark.parametrize(CASE_ARGS, [
|
||||
@pytest.mark.parametrize(
|
||||
CASE_ARGS,
|
||||
[
|
||||
*SIMPLE_CASES,
|
||||
("accc", "a\nbb\nccc", 1.0, 1.0),
|
||||
])
|
||||
],
|
||||
)
|
||||
def test_match_gt_line(gt, ocr, first_line_score, all_line_score):
|
||||
coef = Coefficients()
|
||||
gt_lines = initialize_lines(gt)
|
||||
|
|
@ -185,15 +215,22 @@ def test_match_gt_line(gt, ocr, first_line_score, all_line_score):
|
|||
assert score == pytest.approx(first_line_score)
|
||||
|
||||
|
||||
@pytest.mark.parametrize("original,match,expected_lines", [
|
||||
@pytest.mark.parametrize(
|
||||
"original,match,expected_lines",
|
||||
[
|
||||
(Part(), Part(), []),
|
||||
(Part(text="abc"), Part(), [Part(text="abc")]),
|
||||
(Part(text="abc"), Part("d"), [Part(text="bc", start=1)]),
|
||||
(Part(text="abc"), Part("a", start=100), [Part(text="abc")]),
|
||||
(Part(text="abc"), Part("a"), [Part(text="bc", start=1)]),
|
||||
(Part(text="abc"), Part("b", start=1), [Part(text="a"), Part(text="c", start=2)]),
|
||||
(
|
||||
Part(text="abc"),
|
||||
Part("b", start=1),
|
||||
[Part(text="a"), Part(text="c", start=2)],
|
||||
),
|
||||
(Part(text="abc"), Part("c", start=2), [Part(text="ab")]),
|
||||
])
|
||||
],
|
||||
)
|
||||
def test_remove_or_split(original, match, expected_lines):
|
||||
lines = [original]
|
||||
splitted = remove_or_split(original, match, lines)
|
||||
|
|
@ -201,7 +238,9 @@ def test_remove_or_split(original, match, expected_lines):
|
|||
assert lines == expected_lines
|
||||
|
||||
|
||||
@pytest.mark.parametrize(EDIT_ARGS, [
|
||||
@pytest.mark.parametrize(
|
||||
EDIT_ARGS,
|
||||
[
|
||||
*SIMPLE_EDITS,
|
||||
(Part(text="a"), Part(text="b"), Distance(delete=1)),
|
||||
(Part(text="aaa"), Part(text="bbb"), Distance(delete=3)),
|
||||
|
|
@ -210,9 +249,18 @@ def test_remove_or_split(original, match, expected_lines):
|
|||
(Part(text=""), Part(text=""), None),
|
||||
(Part(text="abcd"), Part(text="acd"), Distance(match=3, delete=1)),
|
||||
(Part(text="abc"), Part(text="abdc"), Distance(match=3, insert=1)),
|
||||
(Part(text="aaabbbaaaddd"), Part(text="aaabcbaaa"), Distance(match=8, replace=1)),
|
||||
(Part(text="aaabbbccc"), Part(text="aaabbbdddccc"), Distance(match=9, insert=3)),
|
||||
])
|
||||
(
|
||||
Part(text="aaabbbaaaddd"),
|
||||
Part(text="aaabcbaaa"),
|
||||
Distance(match=8, replace=1),
|
||||
),
|
||||
(
|
||||
Part(text="aaabbbccc"),
|
||||
Part(text="aaabbbdddccc"),
|
||||
Distance(match=9, insert=3),
|
||||
),
|
||||
],
|
||||
)
|
||||
def test_match_lines(gt, ocr, expected_dist):
|
||||
match = match_lines(gt, ocr)
|
||||
if not expected_dist:
|
||||
|
|
@ -223,14 +271,17 @@ def test_match_lines(gt, ocr, expected_dist):
|
|||
assert match.dist == expected_dist
|
||||
|
||||
|
||||
@pytest.mark.parametrize(EDIT_ARGS, [
|
||||
@pytest.mark.parametrize(
|
||||
EDIT_ARGS,
|
||||
[
|
||||
*SIMPLE_EDITS,
|
||||
(Part(text="").substring(), Part(text=""), Distance()),
|
||||
(Part(text="ab").substring(), Part("a"), Distance(match=1, delete=1)),
|
||||
(Part(text="a").substring(), Part("ab"), Distance(match=1, insert=1)),
|
||||
(Part(text="a"), Part(text="b"), Distance(replace=1)),
|
||||
(Part(text="aaa"), Part(text="bbb"), Distance(replace=3)),
|
||||
])
|
||||
],
|
||||
)
|
||||
def test_distance(gt, ocr, expected_dist):
|
||||
match = distance(gt, ocr)
|
||||
assert match.gt == gt
|
||||
|
|
@ -238,20 +289,37 @@ def test_distance(gt, ocr, expected_dist):
|
|||
assert match.dist == expected_dist
|
||||
|
||||
|
||||
@pytest.mark.parametrize("matches,expected_dist", [
|
||||
@pytest.mark.parametrize(
|
||||
"matches,expected_dist",
|
||||
[
|
||||
([], 1),
|
||||
([Match(gt=Part(text=""), ocr=Part(text=""), dist=Distance(), ops=[])], 1),
|
||||
([Match(gt=Part(text="abee"), ocr=Part("ac"),
|
||||
dist=Distance(match=1, replace=1, delete=2), ops=[]),
|
||||
Match(gt=Part(text="cd"), ocr=Part("ceff"),
|
||||
dist=Distance(match=1, replace=1, insert=2), ops=[])],
|
||||
1 - 6 / 6),
|
||||
])
|
||||
(
|
||||
[
|
||||
Match(
|
||||
gt=Part(text="abee"),
|
||||
ocr=Part("ac"),
|
||||
dist=Distance(match=1, replace=1, delete=2),
|
||||
ops=[],
|
||||
),
|
||||
Match(
|
||||
gt=Part(text="cd"),
|
||||
ocr=Part("ceff"),
|
||||
dist=Distance(match=1, replace=1, insert=2),
|
||||
ops=[],
|
||||
),
|
||||
],
|
||||
1 - 6 / 6,
|
||||
),
|
||||
],
|
||||
)
|
||||
def test_character_accuracy_matches(matches, expected_dist):
|
||||
assert character_accuracy_for_matches(matches) == pytest.approx(expected_dist)
|
||||
|
||||
|
||||
@pytest.mark.parametrize("dist,expected_dist", [
|
||||
@pytest.mark.parametrize(
|
||||
"dist,expected_dist",
|
||||
[
|
||||
(Distance(), 1),
|
||||
(Distance(match=1), 1),
|
||||
(Distance(replace=1), 0),
|
||||
|
|
@ -259,25 +327,39 @@ def test_character_accuracy_matches(matches, expected_dist):
|
|||
(Distance(match=1, insert=2), 1 - 2 / 1),
|
||||
(Distance(match=2, insert=1), 0.5),
|
||||
(Distance(match=1, delete=1), 0.5),
|
||||
])
|
||||
],
|
||||
)
|
||||
def test_character_accuracy_dist(dist, expected_dist):
|
||||
assert character_accuracy(dist) == pytest.approx(expected_dist)
|
||||
|
||||
|
||||
@pytest.mark.parametrize("line,subline,expected_rest", [
|
||||
@pytest.mark.parametrize(
|
||||
"line,subline,expected_rest",
|
||||
[
|
||||
(Part(), Part(), []),
|
||||
(Part("aaa bbb"), Part("aaa bbb"), []),
|
||||
(Part("aaa bbb"), Part("aaa"), [Part(" bbb", start=3)]),
|
||||
(Part("aaa bbb"), Part("bbb", start=4), [Part("aaa ")]),
|
||||
(Part("aaa bbb", start=3), Part("aaa", start=3), [Part(" bbb", start=6)]),
|
||||
(Part("aaa bbb", start=3), Part("bbb", start=7), [Part("aaa ", start=3)]),
|
||||
(Part("aaa bbb ccc"), Part("bbb", start=4), [Part("aaa "), Part(" ccc", start=7)]),
|
||||
(Part("aaa bbb ccc", start=3), Part("bbb", start=7),
|
||||
[Part("aaa ", start=3), Part(" ccc", start=10)]),
|
||||
(
|
||||
Part("aaa bbb ccc"),
|
||||
Part("bbb", start=4),
|
||||
[Part("aaa "), Part(" ccc", start=7)],
|
||||
),
|
||||
(
|
||||
Part("aaa bbb ccc", start=3),
|
||||
Part("bbb", start=7),
|
||||
[Part("aaa ", start=3), Part(" ccc", start=10)],
|
||||
),
|
||||
(Part("aaa bbb"), Part(" ", start=3), [Part("aaa"), Part("bbb", start=4)]),
|
||||
(Part("aaa bbb", start=3), Part(" ", start=6),
|
||||
[Part("aaa", start=3), Part("bbb", start=7)]),
|
||||
])
|
||||
(
|
||||
Part("aaa bbb", start=3),
|
||||
Part(" ", start=6),
|
||||
[Part("aaa", start=3), Part("bbb", start=7)],
|
||||
),
|
||||
],
|
||||
)
|
||||
def test_split_line(line, subline, expected_rest):
|
||||
rest = line.split(subline)
|
||||
assert len(rest) == len(expected_rest)
|
||||
|
|
@ -300,12 +382,15 @@ def test_combine_lines():
|
|||
assert False
|
||||
|
||||
|
||||
@pytest.mark.parametrize("line,start,end,expected", [
|
||||
@pytest.mark.parametrize(
|
||||
"line,start,end,expected",
|
||||
[
|
||||
(Part(text=""), 0, None, Part(text="")),
|
||||
(Part(text="a"), 0, None, Part(text="a")),
|
||||
(Part(text="ab"), 0, 1, Part(text="a")),
|
||||
(Part(text="abc"), 0, -1, Part(text="ab")),
|
||||
(Part(text="ab"), 1, None, Part(text="b", start=1)),
|
||||
])
|
||||
],
|
||||
)
|
||||
def test_line_substring(line, start, end, expected):
|
||||
assert line.substring(rel_start=start, rel_end=end) == expected
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue