| from fontTools.varLib.featureVars import ( |
| overlayFeatureVariations) |
| |
| |
| def test_linear(n = 10): |
| conds = [] |
| for i in range(n): |
| end = i / n |
| start = end - 1. |
| region = [{'X': (start, end)}] |
| subst = {'g%.2g'%start: 'g%.2g'%end} |
| conds.append((region, subst)) |
| overlaps = overlayFeatureVariations(conds) |
| assert len(overlaps) == 2 * n - 1, overlaps |
| return conds, overlaps |
| |
| def test_quadratic(n = 10): |
| conds = [] |
| for i in range(1, n + 1): |
| region = [{'X': (0, i / n), |
| 'Y': (0, (n + 1 - i) / n)}] |
| subst = {str(i): str(n + 1 - i)} |
| conds.append((region, subst)) |
| overlaps = overlayFeatureVariations(conds) |
| assert len(overlaps) == n * (n + 1) // 2, overlaps |
| return conds, overlaps |
| |
| def _merge_substitutions(substitutions): |
| merged = {} |
| for subst in substitutions: |
| merged.update(subst) |
| return merged |
| |
| def _match_condition(location, overlaps): |
| for box, substitutions in overlaps: |
| for tag, coord in location.items(): |
| start, end = box[tag] |
| if start <= coord <= end: |
| return _merge_substitutions(substitutions) |
| return {} # no match |
| |
| def test_overlaps_1(): |
| # https://github.com/fonttools/fonttools/issues/1400 |
| conds = [ |
| ([{'abcd': (4, 9)}], {0: 0}), |
| ([{'abcd': (5, 10)}], {1: 1}), |
| ([{'abcd': (0, 8)}], {2: 2}), |
| ([{'abcd': (3, 7)}], {3: 3}), |
| ] |
| overlaps = overlayFeatureVariations(conds) |
| subst = _match_condition({'abcd': 0}, overlaps) |
| assert subst == {2: 2} |
| subst = _match_condition({'abcd': 1}, overlaps) |
| assert subst == {2: 2} |
| subst = _match_condition({'abcd': 3}, overlaps) |
| assert subst == {2: 2, 3: 3} |
| subst = _match_condition({'abcd': 4}, overlaps) |
| assert subst == {0: 0, 2: 2, 3: 3} |
| subst = _match_condition({'abcd': 5}, overlaps) |
| assert subst == {0: 0, 1: 1, 2: 2, 3: 3} |
| subst = _match_condition({'abcd': 7}, overlaps) |
| assert subst == {0: 0, 1: 1, 2: 2, 3: 3} |
| subst = _match_condition({'abcd': 8}, overlaps) |
| assert subst == {0: 0, 1: 1, 2: 2} |
| subst = _match_condition({'abcd': 9}, overlaps) |
| assert subst == {0: 0, 1: 1} |
| subst = _match_condition({'abcd': 10}, overlaps) |
| assert subst == {1: 1} |
| |
| def test_overlaps_2(): |
| # https://github.com/fonttools/fonttools/issues/1400 |
| conds = [ |
| ([{'abcd': (1, 9)}], {0: 0}), |
| ([{'abcd': (8, 10)}], {1: 1}), |
| ([{'abcd': (3, 4)}], {2: 2}), |
| ([{'abcd': (1, 10)}], {3: 3}), |
| ] |
| overlaps = overlayFeatureVariations(conds) |
| subst = _match_condition({'abcd': 0}, overlaps) |
| assert subst == {} |
| subst = _match_condition({'abcd': 1}, overlaps) |
| assert subst == {0: 0, 3: 3} |
| subst = _match_condition({'abcd': 2}, overlaps) |
| assert subst == {0: 0, 3: 3} |
| subst = _match_condition({'abcd': 3}, overlaps) |
| assert subst == {0: 0, 2: 2, 3: 3} |
| subst = _match_condition({'abcd': 5}, overlaps) |
| assert subst == {0: 0, 3: 3} |
| subst = _match_condition({'abcd': 10}, overlaps) |
| assert subst == {1: 1, 3: 3} |
| |
| |
| def run(test, n, quiet): |
| |
| print() |
| print("%s:" % test.__name__) |
| input, output = test(n) |
| if quiet: |
| print(len(output)) |
| else: |
| print() |
| print("Input:") |
| pprint(input) |
| print() |
| print("Output:") |
| pprint(output) |
| print() |
| |
| if __name__ == "__main__": |
| import sys |
| from pprint import pprint |
| quiet = False |
| n = 3 |
| if len(sys.argv) > 1 and sys.argv[1] == '-q': |
| quiet = True |
| del sys.argv[1] |
| if len(sys.argv) > 1: |
| n = int(sys.argv[1]) |
| |
| run(test_linear, n=n, quiet=quiet) |
| run(test_quadratic, n=n, quiet=quiet) |
