fix mssing end with duration,add testcases

ical.js

@@ -450,33 +450,30 @@ module.exports = {
         const par = stack.pop();
 
         if (!curr.end) { // RFC5545, 3.6.1
-          if (curr.datetype === 'date-time') {
-            curr.end = new Date(curr.start.getTime());
-            // If the duration is not set
-          } else if (curr.duration === undefined) {
-            // Set the end to the start plus one day RFC5545, 3.6.1
-            curr.end = moment.utc(curr.start).add(1, 'days').toDate(); // New Date(moment(curr.start).add(1, 'days'));
-          } else {
+          // Set the end according to the datetype of event
+          curr.end = (curr.datetype === 'date-time') ? new Date(curr.start.getTime()) : moment.utc(curr.start).add(1, 'days').toDate();
+
+          // If there was a duration specified
+          if (curr.duration !== undefined) {
             const durationUnits =
-              {
-                // Y: 'years',
-                // M: 'months',
-                W: 'weeks',
-                D: 'days',
-                H: 'hours',
-                M: 'minutes',
-                S: 'seconds'
-              };
+            {
+              // Y: 'years',
+              // M: 'months',
+              W: 'weeks',
+              D: 'days',
+              H: 'hours',
+              M: 'minutes',
+              S: 'seconds'
+            };
             // Get the list of duration elements
             const r = curr.duration.match(/-?\d+[YMWDHS]/g);
+
+            // Use the duration to create the end value, from the start
             let newend = moment.utc(curr.start);
             // Is the 1st character a negative sign?
             const indicator = curr.duration.startsWith('-') ? -1 : 1;
-            // Process each element
-            for (const d of r) {
-              newend = newend.add(Number.parseInt(d, 10) * indicator, durationUnits[d.slice(-1)]);
-            }
-
+            newend = newend.add(Number.parseInt(r, 10) * indicator, durationUnits[r.toString().slice(-1)]);
+            // End is a Date type, not moment
             curr.end = newend.toDate();
           }
         }

test/test-async.js

@@ -834,7 +834,38 @@ vows
           }
         }
       }
-
+    },
+    'with test_date_time_duration.ics': {
+      topic() {
+        return ical.parseFile('./test/test_date_time_duration.ics');
+      },
+      'using an event containing a start date but no end, only duration': {
+        'topic'(events) {
+          return _.select(_.values(events), x => {
+            return x.summary === 'period test2';
+          })[0];
+        },
+        'it uses the start/end of the event'(event) {
+          assert.equal(event.start.toJSON(), '2024-02-15T09:00:00.000Z');
+          assert.equal(event.end.toJSON(), '2024-02-15T09:15:00.000Z');
+        }
+      }
+    },
+    'with test_date_duration.ics': {
+      topic() {
+        return ical.parseFile('./test/test_date_duration.ics');
+      },
+      'using an event containing a start date but no end, only duration': {
+        'topic'(events) {
+          return _.select(_.values(events), x => {
+            return x.summary === 'period test2';
+          })[0];
+        },
+        'ends one week later'(event) {
+          assert.equal(event.start.toDateString(), new Date(2024, 1, 15).toDateString());
+          assert.equal(event.end.toDateString(), new Date(2024, 1, 22).toDateString());
+        }
+      }
     }
   })
   .export(module);

test/test.js

@@ -983,6 +983,38 @@ vows
           assert.equal(topic.start.tz, 'Europe/Berlin');
         }
       }
+    },
+    'with test_date_time_duration.ics': {
+      topic() {
+        return ical.parseFile('./test/test_date_time_duration.ics');
+      },
+      'using an event containing a start date but no end, only duration': {
+        'topic'(events) {
+          return _.select(_.values(events), x => {
+            return x.summary === 'period test2';
+          })[0];
+        },
+        'it uses the start/end of the event'(event) {
+          assert.equal(event.start.toJSON(), '2024-02-15T09:00:00.000Z');
+          assert.equal(event.end.toJSON(), '2024-02-15T09:15:00.000Z');
+        }
+      }
+    },
+    'with test_date_duration.ics': {
+      topic() {
+        return ical.parseFile('./test/test_date_duration.ics');
+      },
+      'using an event containing a start date but no end, only duration': {
+        'topic'(events) {
+          return _.select(_.values(events), x => {
+            return x.summary === 'period test2';
+          })[0];
+        },
+        'ends one week later'(event) {
+          assert.equal(event.start.toDateString(), new Date(2024, 1, 15).toDateString());
+          assert.equal(event.end.toDateString(), new Date(2024, 1, 22).toDateString());
+        }
+      }
     }
   })
   .export(module);

test/test_date_duration.ics

@@ -0,0 +1,18 @@
+BEGIN:VCALENDAR
+PRODID:-//Synology//EN
+VERSION:2.0
+BEGIN:VEVENT
+CREATED:20240215T101655
+LAST-MODIFIED:20240215T101655
+DTSTAMP:20240215T101655
+UID:20240215T101655[email protected]
+SEQUENCE:2
+SUMMARY:period test2
+TRANSP:OPAQUE
+DESCRIPTION:
+LOCATION:Kriftel
+X-APPLE-STRUCTURED-LOCATION;VALUE=URI;X-TITLE=Kriftel: geo:50.083558\,8.4693855
+DTSTART:20240215
+DURATION:PT1W
+END:VEVENT
+END:VCALENDAR

test/test_date_time_duration.ics

@@ -0,0 +1,18 @@
+BEGIN:VCALENDAR
+PRODID:-//Synology//EN
+VERSION:2.0
+BEGIN:VEVENT
+CREATED:20240215T101655
+LAST-MODIFIED:20240215T101655
+DTSTAMP:20240215T101655
+UID:20240215T101655[email protected]
+SEQUENCE:2
+SUMMARY:period test2
+TRANSP:OPAQUE
+DESCRIPTION:
+LOCATION:Kriftel
+X-APPLE-STRUCTURED-LOCATION;VALUE=URI;X-TITLE=Kriftel: geo:50.083558\,8.4693855
+DTSTART:20240215T090000Z
+DURATION:PT15M
+END:VEVENT
+END:VCALENDAR