fix dateParser + tests

Author: KSDaemon

packages/cubejs-api-gateway/src/dateParser.js

@@ -87,7 +87,9 @@ export function dateParser(dateString, timezone, now = new Date()) {
 
     momentRange = [momentRange[0].startOf(exactGranularity), momentRange[1].endOf(exactGranularity)];
   } else {
-    const results = parse(dateString, new Date(moment().tz(timezone).format(moment.HTML5_FMT.DATETIME_LOCAL_MS)));
+    const current = moment(now).tz(timezone);
+    const results = parse(dateString, new Date(current.format(moment.HTML5_FMT.DATETIME_LOCAL_MS)));
+
     if (!results?.length) {
       throw new UserError(`Can't parse date: '${dateString}'`);
     }

packages/cubejs-api-gateway/test/dateParser.test.js

@@ -181,12 +181,12 @@ describe('dateParser', () => {
     );
   });
 
-  test('from 12AM till now by 1 hour', () => {
+  test('from 12AM till now by hour', () => {
     Date.now = jest.fn().mockReturnValue(new Date(2021, 2, 5, 13, 0, 0, 0));
-    expect(dateParser('from 12AM till now by 1 hour', 'UTC', new Date(2021, 2, 5, 13, 0, 0, 0))).toStrictEqual(
+    expect(dateParser('2 weeks ago by hour', 'UTC', new Date(Date.UTC(2021, 2, 5, 13, 0, 0, 0)))).toStrictEqual(
       [
-        '2021-03-05T00:00:00.000',
-        '2021-03-05T11:59:59.999'
+        '2021-02-19T13:00:00.000',
+        '2021-02-19T13:59:59.999'
       ]
     );