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FA-36411 / Tab interfaces / Open access

Dock target regions: center self drop noop · case 01

The tab workspace reports an incorrect center self drop noop.

Verified by executionVariant 1 · 8 checks per implementationDownload source bundle ↓JSON ↗

ROOT CAUSE

The center self drop noop decision uses x['source_pane']==x['target_pane'] instead of x['source_pane']==x['target_pane'] and (x['edge']<=x['px']<x['width']-x['edge'] and x['edge']<=x['py']<x['height']-x['edge']).

THE FAILURE

The center self drop noop decision uses x['source_pane']==x['target_pane'] instead of x['source_pane']==x['target_pane'] and (x['edge']<=x['px']<x['width']-x['edge'] and x['edge']<=x['py']<x['height']-x['edge']).

Unsuccessful approach: The partial repair False still violates a workspace boundary or normal case.

Case contract

A dropped tab creates a new ungrouped pane only in an edge docking zone; center targets join the destination group. Center drops into the source pane are no-ops. Corners resolve to the nearest normalized edge.

Why this case matters

Offline tab/panel workspace behavior; no browser or desktop framework is emulated.

1 / The failure

Exit 1
"""Failure Map reference implementation. Python standard library only."""
import json

N = 1
observations = []
def solve(x):
    r0 = x['edge']<=x['px']<x['width']-x['edge'] and x['edge']<=x['py']<x['height']-x['edge']
    r1 = 'left' if x['px']<x['width']/2 else 'right'
    r2 = 'top' if x['py']<x['height']/2 else 'bottom'
    r3 = 'horizontal' if min(x['px'],x['width']-x['px'])*x['height']<=min(x['py'],x['height']-x['py'])*x['width'] else 'vertical'
    r4 = x['source_pane']==x['target_pane']
    r5 = x['target_group'] if (x['edge']<=x['px']<x['width']-x['edge'] and x['edge']<=x['py']<x['height']-x['edge']) else None
    return [r0,r1,r2,r3,r4,r5]
def check(label, actual, expected):
    observations.append({"check": label, "actual": actual, "expected": expected, "passed": actual == expected})
fixtures = {1: [({'px': 10, 'py': 70, 'width': 200, 'height': 100, 'edge': 20, 'gutter': 4, 'source_pane': 'p', 'target_pane': 'q', 'new_pane': 'r', 'target_group': 'g'}, [False, 'left', 'bottom', 'horizontal', False, None]), ({'px': 100, 'py': 50, 'width': 200, 'height': 100, 'edge': 20, 'gutter': 4, 'source_pane': 'p', 'target_pane': 'q', 'new_pane': 'r', 'target_group': 'g'}, [True, 'right', 'bottom', 'horizontal', False, 'g']), ({'px': 190, 'py': 50, 'width': 200, 'height': 100, 'edge': 20, 'gutter': 4, 'source_pane': 'p', 'target_pane': 'q', 'new_pane': 'r', 'target_group': 'g'}, [False, 'right', 'bottom', 'horizontal', False, None]), ({'px': 100, 'py': 5, 'width': 200, 'height': 100, 'edge': 20, 'gutter': 4, 'source_pane': 'p', 'target_pane': 'q', 'new_pane': 'r', 'target_group': 'g'}, [False, 'right', 'top', 'vertical', False, None]), ({'px': 100, 'py': 95, 'width': 200, 'height': 100, 'edge': 20, 'gutter': 4, 'source_pane': 'p', 'target_pane': 'q', 'new_pane': 'r', 'target_group': 'g'}, [False, 'right', 'bottom', 'vertical', False, None]), ({'px': 5, 'py': 5, 'width': 200, 'height': 100, 'edge': 20, 'gutter': 4, 'source_pane': 'p', 'target_pane': 'q', 'new_pane': 'r', 'target_group': 'g'}, [False, 'left', 'top', 'horizontal', False, None]), ({'px': 100, 'py': 50, 'width': 200, 'height': 100, 'edge': 20, 'gutter': 4, 'source_pane': 'q', 'target_pane': 'q', 'new_pane': 'r', 'target_group': 'g'}, [True, 'right', 'bottom', 'horizontal', True, 'g']), ({'px': 10, 'py': 70, 'width': 200, 'height': 100, 'edge': 20, 'gutter': 4, 'source_pane': 'q', 'target_pane': 'q', 'new_pane': 'r', 'target_group': 'g'}, [False, 'left', 'bottom', 'horizontal', False, None])], 2: [({'px': 20, 'py': 140, 'width': 400, 'height': 200, 'edge': 40, 'gutter': 8, 'source_pane': 'p', 'target_pane': 'q', 'new_pane': 'r', 'target_group': 'g'}, [False, 'left', 'bottom', 'horizontal', False, None]), ({'px': 200, 'py': 100, 'width': 400, 'height': 200, 'edge': 40, 'gutter': 8, 'source_pane': 'p', 'target_pane': 'q', 'new_pane': 'r', 'target_group': 'g'}, [True, 'right', 'bottom', 'horizontal', False, 'g']), ({'px': 380, 'py': 100, 'width': 400, 'height': 200, 'edge': 40, 'gutter': 8, 'source_pane': 'p', 'target_pane': 'q', 'new_pane': 'r', 'target_group': 'g'}, [False, 'right', 'bottom', 'horizontal', False, None]), ({'px': 200, 'py': 10, 'width': 400, 'height': 200, 'edge': 40, 'gutter': 8, 'source_pane': 'p', 'target_pane': 'q', 'new_pane': 'r', 'target_group': 'g'}, [False, 'right', 'top', 'vertical', False, None]), ({'px': 200, 'py': 190, 'width': 400, 'height': 200, 'edge': 40, 'gutter': 8, 'source_pane': 'p', 'target_pane': 'q', 'new_pane': 'r', 'target_group': 'g'}, [False, 'right', 'bottom', 'vertical', False, None]), ({'px': 10, 'py': 10, 'width': 400, 'height': 200, 'edge': 40, 'gutter': 8, 'source_pane': 'p', 'target_pane': 'q', 'new_pane': 'r', 'target_group': 'g'}, [False, 'left', 'top', 'horizontal', False, None]), ({'px': 200, 'py': 100, 'width': 400, 'height': 200, 'edge': 40, 'gutter': 8, 'source_pane': 'q', 'target_pane': 'q', 'new_pane': 'r', 'target_group': 'g'}, [True, 'right', 'bottom', 'horizontal', True, 'g']), ({'px': 20, 'py': 140, 'width': 400, 'height': 200, 'edge': 40, 'gutter': 8, 'source_pane': 'q', 'target_pane': 'q', 'new_pane': 'r', 'target_group': 'g'}, [False, 'left', 'bottom', 'horizontal', False, None])], 3: [({'px': 30, 'py': 210, 'width': 600, 'height': 300, 'edge': 60, 'gutter': 12, 'source_pane': 'p', 'target_pane': 'q', 'new_pane': 'r', 'target_group': 'g'}, [False, 'left', 'bottom', 'horizontal', False, None]), ({'px': 300, 'py': 150, 'width': 600, 'height': 300, 'edge': 60, 'gutter': 12, 'source_pane': 'p', 'target_pane': 'q', 'new_pane': 'r', 'target_group': 'g'}, [True, 'right', 'bottom', 'horizontal', False, 'g']), ({'px': 570, 'py': 150, 'width': 600, 'height': 300, 'edge': 60, 'gutter': 12, 'source_pane': 'p', 'target_pane': 'q', 'new_pane': 'r', 'target_group': 'g'}, [False, 'right', 'bottom', 'horizontal', False, None]), ({'px': 300, 'py': 15, 'width': 600, 'height': 300, 'edge': 60, 'gutter': 12, 'source_pane': 'p', 'target_pane': 'q', 'new_pane': 'r', 'target_group': 'g'}, [False, 'right', 'top', 'vertical', False, None]), ({'px': 300, 'py': 285, 'width': 600, 'height': 300, 'edge': 60, 'gutter': 12, 'source_pane': 'p', 'target_pane': 'q', 'new_pane': 'r', 'target_group': 'g'}, [False, 'right', 'bottom', 'vertical', False, None]), ({'px': 15, 'py': 15, 'width': 600, 'height': 300, 'edge': 60, 'gutter': 12, 'source_pane': 'p', 'target_pane': 'q', 'new_pane': 'r', 'target_group': 'g'}, [False, 'left', 'top', 'horizontal', False, None]), ({'px': 300, 'py': 150, 'width': 600, 'height': 300, 'edge': 60, 'gutter': 12, 'source_pane': 'q', 'target_pane': 'q', 'new_pane': 'r', 'target_group': 'g'}, [True, 'right', 'bottom', 'horizontal', True, 'g']), ({'px': 30, 'py': 210, 'width': 600, 'height': 300, 'edge': 60, 'gutter': 12, 'source_pane': 'q', 'target_pane': 'q', 'new_pane': 'r', 'target_group': 'g'}, [False, 'left', 'bottom', 'horizontal', False, None])], 4: [({'px': 40, 'py': 280, 'width': 800, 'height': 400, 'edge': 80, 'gutter': 16, 'source_pane': 'p', 'target_pane': 'q', 'new_pane': 'r', 'target_group': 'g'}, [False, 'left', 'bottom', 'horizontal', False, None]), ({'px': 400, 'py': 200, 'width': 800, 'height': 400, 'edge': 80, 'gutter': 16, 'source_pane': 'p', 'target_pane': 'q', 'new_pane': 'r', 'target_group': 'g'}, [True, 'right', 'bottom', 'horizontal', False, 'g']), ({'px': 760, 'py': 200, 'width': 800, 'height': 400, 'edge': 80, 'gutter': 16, 'source_pane': 'p', 'target_pane': 'q', 'new_pane': 'r', 'target_group': 'g'}, [False, 'right', 'bottom', 'horizontal', False, None]), ({'px': 400, 'py': 20, 'width': 800, 'height': 400, 'edge': 80, 'gutter': 16, 'source_pane': 'p', 'target_pane': 'q', 'new_pane': 'r', 'target_group': 'g'}, [False, 'right', 'top', 'vertical', False, None]), ({'px': 400, 'py': 380, 'width': 800, 'height': 400, 'edge': 80, 'gutter': 16, 'source_pane': 'p', 'target_pane': 'q', 'new_pane': 'r', 'target_group': 'g'}, [False, 'right', 'bottom', 'vertical', False, None]), ({'px': 20, 'py': 20, 'width': 800, 'height': 400, 'edge': 80, 'gutter': 16, 'source_pane': 'p', 'target_pane': 'q', 'new_pane': 'r', 'target_group': 'g'}, [False, 'left', 'top', 'horizontal', False, None]), ({'px': 400, 'py': 200, 'width': 800, 'height': 400, 'edge': 80, 'gutter': 16, 'source_pane': 'q', 'target_pane': 'q', 'new_pane': 'r', 'target_group': 'g'}, [True, 'right', 'bottom', 'horizontal', True, 'g']), ({'px': 40, 'py': 280, 'width': 800, 'height': 400, 'edge': 80, 'gutter': 16, 'source_pane': 'q', 'target_pane': 'q', 'new_pane': 'r', 'target_group': 'g'}, [False, 'left', 'bottom', 'horizontal', False, None])], 5: [({'px': 50, 'py': 350, 'width': 1000, 'height': 500, 'edge': 100, 'gutter': 20, 'source_pane': 'p', 'target_pane': 'q', 'new_pane': 'r', 'target_group': 'g'}, [False, 'left', 'bottom', 'horizontal', False, None]), ({'px': 500, 'py': 250, 'width': 1000, 'height': 500, 'edge': 100, 'gutter': 20, 'source_pane': 'p', 'target_pane': 'q', 'new_pane': 'r', 'target_group': 'g'}, [True, 'right', 'bottom', 'horizontal', False, 'g']), ({'px': 950, 'py': 250, 'width': 1000, 'height': 500, 'edge': 100, 'gutter': 20, 'source_pane': 'p', 'target_pane': 'q', 'new_pane': 'r', 'target_group': 'g'}, [False, 'right', 'bottom', 'horizontal', False, None]), ({'px': 500, 'py': 25, 'width': 1000, 'height': 500, 'edge': 100, 'gutter': 20, 'source_pane': 'p', 'target_pane': 'q', 'new_pane': 'r', 'target_group': 'g'}, [False, 'right', 'top', 'vertical', False, None]), ({'px': 500, 'py': 475, 'width': 1000, 'height': 500, 'edge': 100, 'gutter': 20, 'source_pane': 'p', 'target_pane': 'q', 'new_pane': 'r', 'target_group': 'g'}, [False, 'right', 'bottom', 'vertical', False, None]), ({'px': 25, 'py': 25, 'width': 1000, 'height': 500, 'edge': 100, 'gutter': 20, 'source_pane': 'p', 'target_pane': 'q', 'new_pane': 'r', 'target_group': 'g'}, [False, 'left', 'top', 'horizontal', False, None]), ({'px': 500, 'py': 250, 'width': 1000, 'height': 500, 'edge': 100, 'gutter': 20, 'source_pane': 'q', 'target_pane': 'q', 'new_pane': 'r', 'target_group': 'g'}, [True, 'right', 'bottom', 'horizontal', True, 'g']), ({'px': 50, 'py': 350, 'width': 1000, 'height': 500, 'edge': 100, 'gutter': 20, 'source_pane': 'q', 'target_pane': 'q', 'new_pane': 'r', 'target_group': 'g'}, [False, 'left', 'bottom', 'horizontal', False, None])]}
for i, (inputs, expected) in enumerate(fixtures[N]):
    check("workspace regression "+str(i), solve(inputs), expected)
print(json.dumps({"observations": observations, "passed": all(x["passed"] for x in observations)}, ensure_ascii=False))
raise SystemExit(0 if all(x["passed"] for x in observations) else 1)
Boundary fixtureActualExpectedOutcome
workspace regression 0[False, 'left', 'bottom', 'horizontal', False, None][False, 'left', 'bottom', 'horizontal', False, None]Passed
workspace regression 1[True, 'right', 'bottom', 'horizontal', False, 'g'][True, 'right', 'bottom', 'horizontal', False, 'g']Passed
workspace regression 2[False, 'right', 'bottom', 'horizontal', False, None][False, 'right', 'bottom', 'horizontal', False, None]Passed
workspace regression 3[False, 'right', 'top', 'vertical', False, None][False, 'right', 'top', 'vertical', False, None]Passed
workspace regression 4[False, 'right', 'bottom', 'vertical', False, None][False, 'right', 'bottom', 'vertical', False, None]Passed
workspace regression 5[False, 'left', 'top', 'horizontal', False, None][False, 'left', 'top', 'horizontal', False, None]Passed
workspace regression 6[True, 'right', 'bottom', 'horizontal', True, 'g'][True, 'right', 'bottom', 'horizontal', True, 'g']Passed
workspace regression 7[False, 'left', 'bottom', 'horizontal', True, None][False, 'left', 'bottom', 'horizontal', False, None]Failed

SHA-256 / e126f4ba19fa0bbf498d35393bba9a899bdde24cced1f5346ad8050660c9e156

2 / The unsuccessful fix

Exit 1
"""Failure Map reference implementation. Python standard library only."""
import json

N = 1
observations = []
def solve(x):
    r0 = x['edge']<=x['px']<x['width']-x['edge'] and x['edge']<=x['py']<x['height']-x['edge']
    r1 = 'left' if x['px']<x['width']/2 else 'right'
    r2 = 'top' if x['py']<x['height']/2 else 'bottom'
    r3 = 'horizontal' if min(x['px'],x['width']-x['px'])*x['height']<=min(x['py'],x['height']-x['py'])*x['width'] else 'vertical'
    r4 = False
    r5 = x['target_group'] if (x['edge']<=x['px']<x['width']-x['edge'] and x['edge']<=x['py']<x['height']-x['edge']) else None
    return [r0,r1,r2,r3,r4,r5]
def check(label, actual, expected):
    observations.append({"check": label, "actual": actual, "expected": expected, "passed": actual == expected})
fixtures = {1: [({'px': 10, 'py': 70, 'width': 200, 'height': 100, 'edge': 20, 'gutter': 4, 'source_pane': 'p', 'target_pane': 'q', 'new_pane': 'r', 'target_group': 'g'}, [False, 'left', 'bottom', 'horizontal', False, None]), ({'px': 100, 'py': 50, 'width': 200, 'height': 100, 'edge': 20, 'gutter': 4, 'source_pane': 'p', 'target_pane': 'q', 'new_pane': 'r', 'target_group': 'g'}, [True, 'right', 'bottom', 'horizontal', False, 'g']), ({'px': 190, 'py': 50, 'width': 200, 'height': 100, 'edge': 20, 'gutter': 4, 'source_pane': 'p', 'target_pane': 'q', 'new_pane': 'r', 'target_group': 'g'}, [False, 'right', 'bottom', 'horizontal', False, None]), ({'px': 100, 'py': 5, 'width': 200, 'height': 100, 'edge': 20, 'gutter': 4, 'source_pane': 'p', 'target_pane': 'q', 'new_pane': 'r', 'target_group': 'g'}, [False, 'right', 'top', 'vertical', False, None]), ({'px': 100, 'py': 95, 'width': 200, 'height': 100, 'edge': 20, 'gutter': 4, 'source_pane': 'p', 'target_pane': 'q', 'new_pane': 'r', 'target_group': 'g'}, [False, 'right', 'bottom', 'vertical', False, None]), ({'px': 5, 'py': 5, 'width': 200, 'height': 100, 'edge': 20, 'gutter': 4, 'source_pane': 'p', 'target_pane': 'q', 'new_pane': 'r', 'target_group': 'g'}, [False, 'left', 'top', 'horizontal', False, None]), ({'px': 100, 'py': 50, 'width': 200, 'height': 100, 'edge': 20, 'gutter': 4, 'source_pane': 'q', 'target_pane': 'q', 'new_pane': 'r', 'target_group': 'g'}, [True, 'right', 'bottom', 'horizontal', True, 'g']), ({'px': 10, 'py': 70, 'width': 200, 'height': 100, 'edge': 20, 'gutter': 4, 'source_pane': 'q', 'target_pane': 'q', 'new_pane': 'r', 'target_group': 'g'}, [False, 'left', 'bottom', 'horizontal', False, None])], 2: [({'px': 20, 'py': 140, 'width': 400, 'height': 200, 'edge': 40, 'gutter': 8, 'source_pane': 'p', 'target_pane': 'q', 'new_pane': 'r', 'target_group': 'g'}, [False, 'left', 'bottom', 'horizontal', False, None]), ({'px': 200, 'py': 100, 'width': 400, 'height': 200, 'edge': 40, 'gutter': 8, 'source_pane': 'p', 'target_pane': 'q', 'new_pane': 'r', 'target_group': 'g'}, [True, 'right', 'bottom', 'horizontal', False, 'g']), ({'px': 380, 'py': 100, 'width': 400, 'height': 200, 'edge': 40, 'gutter': 8, 'source_pane': 'p', 'target_pane': 'q', 'new_pane': 'r', 'target_group': 'g'}, [False, 'right', 'bottom', 'horizontal', False, None]), ({'px': 200, 'py': 10, 'width': 400, 'height': 200, 'edge': 40, 'gutter': 8, 'source_pane': 'p', 'target_pane': 'q', 'new_pane': 'r', 'target_group': 'g'}, [False, 'right', 'top', 'vertical', False, None]), ({'px': 200, 'py': 190, 'width': 400, 'height': 200, 'edge': 40, 'gutter': 8, 'source_pane': 'p', 'target_pane': 'q', 'new_pane': 'r', 'target_group': 'g'}, [False, 'right', 'bottom', 'vertical', False, None]), ({'px': 10, 'py': 10, 'width': 400, 'height': 200, 'edge': 40, 'gutter': 8, 'source_pane': 'p', 'target_pane': 'q', 'new_pane': 'r', 'target_group': 'g'}, [False, 'left', 'top', 'horizontal', False, None]), ({'px': 200, 'py': 100, 'width': 400, 'height': 200, 'edge': 40, 'gutter': 8, 'source_pane': 'q', 'target_pane': 'q', 'new_pane': 'r', 'target_group': 'g'}, [True, 'right', 'bottom', 'horizontal', True, 'g']), ({'px': 20, 'py': 140, 'width': 400, 'height': 200, 'edge': 40, 'gutter': 8, 'source_pane': 'q', 'target_pane': 'q', 'new_pane': 'r', 'target_group': 'g'}, [False, 'left', 'bottom', 'horizontal', False, None])], 3: [({'px': 30, 'py': 210, 'width': 600, 'height': 300, 'edge': 60, 'gutter': 12, 'source_pane': 'p', 'target_pane': 'q', 'new_pane': 'r', 'target_group': 'g'}, [False, 'left', 'bottom', 'horizontal', False, None]), ({'px': 300, 'py': 150, 'width': 600, 'height': 300, 'edge': 60, 'gutter': 12, 'source_pane': 'p', 'target_pane': 'q', 'new_pane': 'r', 'target_group': 'g'}, [True, 'right', 'bottom', 'horizontal', False, 'g']), ({'px': 570, 'py': 150, 'width': 600, 'height': 300, 'edge': 60, 'gutter': 12, 'source_pane': 'p', 'target_pane': 'q', 'new_pane': 'r', 'target_group': 'g'}, [False, 'right', 'bottom', 'horizontal', False, None]), ({'px': 300, 'py': 15, 'width': 600, 'height': 300, 'edge': 60, 'gutter': 12, 'source_pane': 'p', 'target_pane': 'q', 'new_pane': 'r', 'target_group': 'g'}, [False, 'right', 'top', 'vertical', False, None]), ({'px': 300, 'py': 285, 'width': 600, 'height': 300, 'edge': 60, 'gutter': 12, 'source_pane': 'p', 'target_pane': 'q', 'new_pane': 'r', 'target_group': 'g'}, [False, 'right', 'bottom', 'vertical', False, None]), ({'px': 15, 'py': 15, 'width': 600, 'height': 300, 'edge': 60, 'gutter': 12, 'source_pane': 'p', 'target_pane': 'q', 'new_pane': 'r', 'target_group': 'g'}, [False, 'left', 'top', 'horizontal', False, None]), ({'px': 300, 'py': 150, 'width': 600, 'height': 300, 'edge': 60, 'gutter': 12, 'source_pane': 'q', 'target_pane': 'q', 'new_pane': 'r', 'target_group': 'g'}, [True, 'right', 'bottom', 'horizontal', True, 'g']), ({'px': 30, 'py': 210, 'width': 600, 'height': 300, 'edge': 60, 'gutter': 12, 'source_pane': 'q', 'target_pane': 'q', 'new_pane': 'r', 'target_group': 'g'}, [False, 'left', 'bottom', 'horizontal', False, None])], 4: [({'px': 40, 'py': 280, 'width': 800, 'height': 400, 'edge': 80, 'gutter': 16, 'source_pane': 'p', 'target_pane': 'q', 'new_pane': 'r', 'target_group': 'g'}, [False, 'left', 'bottom', 'horizontal', False, None]), ({'px': 400, 'py': 200, 'width': 800, 'height': 400, 'edge': 80, 'gutter': 16, 'source_pane': 'p', 'target_pane': 'q', 'new_pane': 'r', 'target_group': 'g'}, [True, 'right', 'bottom', 'horizontal', False, 'g']), ({'px': 760, 'py': 200, 'width': 800, 'height': 400, 'edge': 80, 'gutter': 16, 'source_pane': 'p', 'target_pane': 'q', 'new_pane': 'r', 'target_group': 'g'}, [False, 'right', 'bottom', 'horizontal', False, None]), ({'px': 400, 'py': 20, 'width': 800, 'height': 400, 'edge': 80, 'gutter': 16, 'source_pane': 'p', 'target_pane': 'q', 'new_pane': 'r', 'target_group': 'g'}, [False, 'right', 'top', 'vertical', False, None]), ({'px': 400, 'py': 380, 'width': 800, 'height': 400, 'edge': 80, 'gutter': 16, 'source_pane': 'p', 'target_pane': 'q', 'new_pane': 'r', 'target_group': 'g'}, [False, 'right', 'bottom', 'vertical', False, None]), ({'px': 20, 'py': 20, 'width': 800, 'height': 400, 'edge': 80, 'gutter': 16, 'source_pane': 'p', 'target_pane': 'q', 'new_pane': 'r', 'target_group': 'g'}, [False, 'left', 'top', 'horizontal', False, None]), ({'px': 400, 'py': 200, 'width': 800, 'height': 400, 'edge': 80, 'gutter': 16, 'source_pane': 'q', 'target_pane': 'q', 'new_pane': 'r', 'target_group': 'g'}, [True, 'right', 'bottom', 'horizontal', True, 'g']), ({'px': 40, 'py': 280, 'width': 800, 'height': 400, 'edge': 80, 'gutter': 16, 'source_pane': 'q', 'target_pane': 'q', 'new_pane': 'r', 'target_group': 'g'}, [False, 'left', 'bottom', 'horizontal', False, None])], 5: [({'px': 50, 'py': 350, 'width': 1000, 'height': 500, 'edge': 100, 'gutter': 20, 'source_pane': 'p', 'target_pane': 'q', 'new_pane': 'r', 'target_group': 'g'}, [False, 'left', 'bottom', 'horizontal', False, None]), ({'px': 500, 'py': 250, 'width': 1000, 'height': 500, 'edge': 100, 'gutter': 20, 'source_pane': 'p', 'target_pane': 'q', 'new_pane': 'r', 'target_group': 'g'}, [True, 'right', 'bottom', 'horizontal', False, 'g']), ({'px': 950, 'py': 250, 'width': 1000, 'height': 500, 'edge': 100, 'gutter': 20, 'source_pane': 'p', 'target_pane': 'q', 'new_pane': 'r', 'target_group': 'g'}, [False, 'right', 'bottom', 'horizontal', False, None]), ({'px': 500, 'py': 25, 'width': 1000, 'height': 500, 'edge': 100, 'gutter': 20, 'source_pane': 'p', 'target_pane': 'q', 'new_pane': 'r', 'target_group': 'g'}, [False, 'right', 'top', 'vertical', False, None]), ({'px': 500, 'py': 475, 'width': 1000, 'height': 500, 'edge': 100, 'gutter': 20, 'source_pane': 'p', 'target_pane': 'q', 'new_pane': 'r', 'target_group': 'g'}, [False, 'right', 'bottom', 'vertical', False, None]), ({'px': 25, 'py': 25, 'width': 1000, 'height': 500, 'edge': 100, 'gutter': 20, 'source_pane': 'p', 'target_pane': 'q', 'new_pane': 'r', 'target_group': 'g'}, [False, 'left', 'top', 'horizontal', False, None]), ({'px': 500, 'py': 250, 'width': 1000, 'height': 500, 'edge': 100, 'gutter': 20, 'source_pane': 'q', 'target_pane': 'q', 'new_pane': 'r', 'target_group': 'g'}, [True, 'right', 'bottom', 'horizontal', True, 'g']), ({'px': 50, 'py': 350, 'width': 1000, 'height': 500, 'edge': 100, 'gutter': 20, 'source_pane': 'q', 'target_pane': 'q', 'new_pane': 'r', 'target_group': 'g'}, [False, 'left', 'bottom', 'horizontal', False, None])]}
for i, (inputs, expected) in enumerate(fixtures[N]):
    check("workspace regression "+str(i), solve(inputs), expected)
print(json.dumps({"observations": observations, "passed": all(x["passed"] for x in observations)}, ensure_ascii=False))
raise SystemExit(0 if all(x["passed"] for x in observations) else 1)
Boundary fixtureActualExpectedOutcome
workspace regression 0[False, 'left', 'bottom', 'horizontal', False, None][False, 'left', 'bottom', 'horizontal', False, None]Passed
workspace regression 1[True, 'right', 'bottom', 'horizontal', False, 'g'][True, 'right', 'bottom', 'horizontal', False, 'g']Passed
workspace regression 2[False, 'right', 'bottom', 'horizontal', False, None][False, 'right', 'bottom', 'horizontal', False, None]Passed
workspace regression 3[False, 'right', 'top', 'vertical', False, None][False, 'right', 'top', 'vertical', False, None]Passed
workspace regression 4[False, 'right', 'bottom', 'vertical', False, None][False, 'right', 'bottom', 'vertical', False, None]Passed
workspace regression 5[False, 'left', 'top', 'horizontal', False, None][False, 'left', 'top', 'horizontal', False, None]Passed
workspace regression 6[True, 'right', 'bottom', 'horizontal', False, 'g'][True, 'right', 'bottom', 'horizontal', True, 'g']Failed
workspace regression 7[False, 'left', 'bottom', 'horizontal', False, None][False, 'left', 'bottom', 'horizontal', False, None]Passed

SHA-256 / e066523bd4086964057082e02f437943638c0ae60838dfe2a99eb4c2f204ec84

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This mechanism has 8 recorded checks per implementation. The open-access tier publishes the failure and the unsuccessful fix; the repaired source that passes every check, and the observations that prove it, are available to members.

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Verification & scope

Finite stipulated workspace snapshots only. Independent result fields describe observable obligations, not a full UI runtime. This reproducer isolates one failure mechanism. Results cover the supplied fixtures. Variants within a family share a test contract and should remain grouped when constructing evaluation splits. Related mechanisms with a shared evaluation_group must also remain together; these controlled models are not independent production incidents.

Observations recorded using Python 3.12.14 at 2026-09-29T14:42:51.125583+00:00.

Case digest / f192b124bfeec37a64303b68d88ce9a3af221d46c3bdefa981eb56fda243714b