[Webkit-unassigned] [Bug 177350] New: CryptoKey in IndexedDB breaks db query

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=177350

            Bug ID: 177350
           Summary: CryptoKey in IndexedDB breaks db query
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Macintosh
                OS: macOS 10.12
            Status: NEW
          Severity: Blocker
          Priority: P2
         Component: WebCore JavaScript
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: stefan at sechel.de

Storing CryptoKeys in IndexedDB does not work well. If we store a CryptoKey in IndexedDB we loose the ability to query by index:

>  QUnit.test('Native', async assert => {
>    const req = indexedDB.open(dbName, 1);
>    req.onupgradeneeded = function() {
>      const db = this.result;
>      const testStore = db.createObjectStore('test', { autoIncrement: false, keyPath: 'id' });
>      testStore.createIndex('id', 'id', { unique: true });
>      testStore.createIndex('IDB_class', 'IDB_class', { unique: false });
>    };  
>    await new Promise(r => req.onsuccess = r);
>    const db = req.result;
>    const testData = {id: 1, IDB_class: 'test_class', key}; // key is a CryptoKey
>    tx = db.transaction(['test'], 'readwrite');
>    store = tx.objectStore('test');
>    store.add(testData);
>    await new Promise(r => tx.oncomplete = r);
>    tx = db.transaction(['test'], 'readonly');
>    store = tx.objectStore('test');
>    const req1 = store.get(1);
>    await new Promise(r => req1.onsuccess = r);  
>    assert.propEqual(req1.result, testData, 'objects should be equivalent');
>    tx = db.transaction(['test'], 'readonly');
>    store = tx.objectStore('test');  
>    const index = store.index('IDB_class');
>    const req2 = index.get('test_class');
>    await new Promise(r => req2.onsuccess = r);
>    assert.propEqual(req2.result, testData, 'objects should be equivalent');
>    indexedDB.deleteDatabase(dbName);
>  });

You can test this using this Fiddle:
https://fiddle.jshell.net/sechel/qn7oesaf/

Expected behaviour: req1.result and req2.result should be property equivalent to testData.

Observed behaviour: Only req1.result is equivalent to testData, req2.result is undefined.

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