Fixed a bug (#2091)

Author: bmingles

packages/jsapi-utils/src/DateUtils.test.ts

@@ -450,17 +450,30 @@ describe('getJsDate', () => {
 });
 
 describe('trimDateTimeStringOverflow', () => {
-  it.each([
+  const dateTimeTexts = [
     '2024',
     '2012-04',
     '2012-04-20',
     '2012-04-20T12',
     '2012-04-20T12:13',
     '2012-04-20T12:13:14',
     '2012-04-20T12:13:14.321',
-  ])('should trim date time string overflow: %s', expected => {
-    const given = `${expected} overflow`;
-    const actual = DateUtils.trimDateTimeStringOverflow(given);
-    expect(actual).toEqual(expected);
-  });
+  ];
+
+  it.each(dateTimeTexts)(
+    'should return given string if no overflow: %s',
+    given => {
+      const actual = DateUtils.trimDateTimeStringOverflow(given);
+      expect(actual).toEqual(given);
+    }
+  );
+
+  it.each(dateTimeTexts)(
+    'should trim date time string overflow: %s',
+    expected => {
+      const given = `${expected} overflow`;
+      const actual = DateUtils.trimDateTimeStringOverflow(given);
+      expect(actual).toEqual(expected);
+    }
+  );
 });

packages/jsapi-utils/src/DateUtils.ts

@@ -394,6 +394,10 @@ export class DateUtils {
       true
     );
 
+    if (overflow === '') {
+      return dateTimeString;
+    }
+
     return dateTimeString.slice(0, -overflow.length);
   }
 }