Squash Odysseus development history

tests/test_editor_layer_selection_js.py

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+import json
+import subprocess
+import textwrap
+from pathlib import Path
+
+
+ROOT = Path(__file__).resolve().parents[1]
+MODULE = (ROOT / "static/js/editor/layer-selection.js").as_uri()
+
+
+def run_node(body: str):
+    script = textwrap.dedent(
+        f"""
+        import {{
+          normalizeLayerSelection, selectedLayers, selectAllLayers,
+          selectLayerRange, selectOnlyLayer, toggleLayerSelection,
+        }} from {json.dumps(MODULE)};
+        {body}
+        """
+    )
+    result = subprocess.run(
+        ["node", "--input-type=module", "-e", script],
+        cwd=ROOT,
+        text=True,
+        capture_output=True,
+        check=True,
+    )
+    return json.loads(result.stdout)
+
+
+def test_layer_selection_supports_single_toggle_range_and_select_all():
+    result = run_node(
+        """
+        const layers=['one','two','three','four'].map(id=>({id,locked:id==='three'}));
+        const state={layers,activeLayerId:'two',selectedLayerIds:[],selectionAnchorId:null};
+        selectOnlyLayer(state,'two');
+        const single=[...state.selectedLayerIds];
+        toggleLayerSelection(state,'four');
+        const toggled={ids:[...state.selectedLayerIds],active:state.activeLayerId};
+        selectLayerRange(state,'one');
+        const ranged={ids:[...state.selectedLayerIds],active:state.activeLayerId};
+        const unlocked=selectedLayers(state,{unlockedOnly:true}).map(layer=>layer.id);
+        selectAllLayers(state);
+        console.log(JSON.stringify({single,toggled,ranged,unlocked,all:state.selectedLayerIds}));
+        """
+    )
+    assert result == {
+        "single": ["two"],
+        "toggled": {"ids": ["two", "four"], "active": "four"},
+        "ranged": {"ids": ["one", "two", "three", "four"], "active": "one"},
+        "unlocked": ["one", "two", "four"],
+        "all": ["one", "two", "three", "four"],
+    }
+
+
+def test_layer_selection_discards_stale_ids_and_keeps_active_layer_selected():
+    result = run_node(
+        """
+        const state={
+          layers:[{id:'one'},{id:'two'}],activeLayerId:'two',
+          selectedLayerIds:['missing','one'],selectionAnchorId:'missing',
+        };
+        const ids=normalizeLayerSelection(state);
+        toggleLayerSelection(state,'two');
+        console.log(JSON.stringify({ids,selected:state.selectedLayerIds,active:state.activeLayerId,anchor:state.selectionAnchorId}));
+        """
+    )
+    assert result == {
+        "ids": ["two"],
+        "selected": ["two"],
+        "active": "two",
+        "anchor": "two",
+    }