2 files changed, 10 insertions, 2 deletions
diff --git a/modules/test/test-memory-graph.js b/modules/test/test-memory-graph.js
index d4fe37a..8c3bb6e 100644
--- a/modules/test/test-memory-graph.js
+++ b/modules/test/test-memory-graph.js
@@ -220,8 +220,15 @@ const sessionOf = d => 'session-session-' + Math.floor(new Date(d).getTime() / 8
         mg2._edges.every(e => Array.isArray(e.source_agents) && typeof e.weight === 'number'),
         JSON.stringify(mg2._edges));
     const legFailed = mg2._edges.find(e => e.type === 'failed');
-    ok('T6.4 a legacy 0.8 failure is capped below success on load',
-        !!legFailed && legFailed.weight < 0.5, 'weight ' + (legFailed || {}).weight);
+    // The cap is applied at READ time, not by rewriting the store: a load must not mutate
+    // user data (the next debounced save would have made it permanent, silently).
+    ok('T6.4a a legacy 0.8 failure is NOT rewritten on load',
+        !!legFailed && legFailed.weight === 0.8, 'stored weight ' + (legFailed || {}).weight);
+    ok('T6.4b it ranks at 0.2 through _effectiveWeight',
+        !!legFailed && mg2._effectiveWeight(legFailed) === 0.2, 'effective ' + (legFailed && mg2._effectiveWeight(legFailed)));
+    ok('T6.4c a success edge keeps its own weight',
+        mg2._effectiveWeight({ type: 'used', weight: 0.5 }) === 0.5,
+        String(mg2._effectiveWeight({ type: 'used', weight: 0.5 })));
     ok('T6.5 unrelated legacy weights are untouched',
         (mg2._edges.find(e => e.type === 'executed') || {}).weight === 0.6,
         String((mg2._edges.find(e => e.type === 'executed') || {}).weight));
diff --git a/modules/test/test-webdav-sizes.js b/modules/test/test-webdav-sizes.js
index 68cb90b..9085f23 100644
--- a/modules/test/test-webdav-sizes.js
+++ b/modules/test/test-webdav-sizes.js
@@ -229,6 +229,7 @@ const said = (out, re) => out.some(o => re.test(o.msg));
     // for a 3 GB file) and must not print 'NaN MB' for a missing size.
     ok('A14a 2 GiB renders as GB', WebDAVModule.prototype._formatSize.call(null, 2 * 1024 * 1024 * 1024) === '2.0 GB', WebDAVModule.prototype._formatSize.call(null, 2 * 1024 * 1024 * 1024));
     ok('A14b undefined does not render NaN', WebDAVModule.prototype._formatSize.call(null, undefined) === '—', WebDAVModule.prototype._formatSize.call(null, undefined));
+    ok('A14d null renders as unknown, not 0 B', WebDAVModule.prototype._formatSize.call(null, null) === '—', WebDAVModule.prototype._formatSize.call(null, null));
     ok('A14c 0 bytes is still B', WebDAVModule.prototype._formatSize.call(null, 0) === '0 B', WebDAVModule.prototype._formatSize.call(null, 0));
 
     console.log('test-webdav-sizes: ' + passes + ' passed, ' + fails + ' failed');