mentat/test/js/tests.js

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// This Source Code Form is subject to the terms of the Mozilla Public
// License, v. 2.0. If a copy of the MPL was not distributed with this
// file, You can obtain one at http://mozilla.org/MPL/2.0/.
var datomish = require("../../target/release-node/datomish.js");
var schema = {
"name": "pages",
"attributes": [
{"name": "page/url",
"type": "string",
"cardinality": "one",
"unique": "identity",
"doc": "A page's URL."},
{"name": "page/title",
"type": "string",
"cardinality": "one",
"doc": "A page's title."},
{"name": "page/starred",
"type": "boolean",
"cardinality": "one",
"doc": "Whether the page is starred."},
{"name": "page/visit",
"type": "ref",
"cardinality": "many",
"doc": "A visit to the page."}
]
};
async function testOpen() {
let db = await datomish.open("/tmp/testing.db");
await db.ensureSchema(schema);
let txResult = await db.transact([{"db/id": 55,
"page/url": "http://foo.com/bar",
"page/starred": true}]);
console.log("Transaction returned " + JSON.stringify(txResult));
console.log("Transaction instant: " + txResult.txInstant);
let results = await datomish.q(db.db(), "[:find ?url :in $ :where [?e :page/url ?url]]")
results = results.map(r => r[0]);
console.log("Query results: " + JSON.stringify(results));
await db.close();
}
testOpen()
.then((r) => console.log("Done."))
.catch((e) => console.log("Failure: " + e.stack));