From 698ce9f272c8e09e0a2c291a6ee9b8812369b370 Mon Sep 17 00:00:00 2001
From: Juan Cruz Viotti <jv@jviotti.com>
Date: Wed, 22 Oct 2025 16:15:48 -0400
Subject: [PATCH] Add some more ISO 8601-1:2019 interval tests

Signed-off-by: Juan Cruz Viotti <jv@jviotti.com>
---
 .../start-end-calendar-extended.test.json     | 145 ++++++++++++++++++
 .../start-end-ordinal-basic.test.json         | 135 ++++++++++++++++
 .../start-end-ordinal-extended.test.json      | 135 ++++++++++++++++
 .../interval/start-end-week-basic.test.json   | 145 ++++++++++++++++++
 .../start-end-week-extended.test.json         | 145 ++++++++++++++++++
 5 files changed, 705 insertions(+)

diff --git a/test/iso/datetime/2019/interval/start-end-calendar-extended.test.json b/test/iso/datetime/2019/interval/start-end-calendar-extended.test.json
index 214443ca..4ddd947a 100644
--- a/test/iso/datetime/2019/interval/start-end-calendar-extended.test.json
+++ b/test/iso/datetime/2019/interval/start-end-calendar-extended.test.json
@@ -346,6 +346,151 @@
       "description": "Valid - reversed order (end before start is syntactically valid per ISO 8601)",
       "data": "1985-06-25T10:30:00/1985-04-12T23:20:50",
       "valid": true
+    },
+    {
+      "description": "Invalid - start hour 99",
+      "data": "1985-04-12T99:20:50/1985-06-25T10:30:00",
+      "valid": false
+    },
+    {
+      "description": "Invalid - end hour 99",
+      "data": "1985-04-12T23:20:50/1985-06-25T99:30:00",
+      "valid": false
+    },
+    {
+      "description": "Invalid - start minute 99",
+      "data": "1985-04-12T23:99:50/1985-06-25T10:30:00",
+      "valid": false
+    },
+    {
+      "description": "Invalid - end minute 99",
+      "data": "1985-04-12T23:20:50/1985-06-25T10:99:00",
+      "valid": false
+    },
+    {
+      "description": "Invalid - start second 99",
+      "data": "1985-04-12T23:20:99/1985-06-25T10:30:00",
+      "valid": false
+    },
+    {
+      "description": "Invalid - end second 99",
+      "data": "1985-04-12T23:20:50/1985-06-25T10:30:99",
+      "valid": false
+    },
+    {
+      "description": "Invalid - letter in start year",
+      "data": "I985-04-12T23:20:50/1985-06-25T10:30:00",
+      "valid": false
+    },
+    {
+      "description": "Invalid - letter in end year",
+      "data": "1985-04-12T23:20:50/I985-06-25T10:30:00",
+      "valid": false
+    },
+    {
+      "description": "Invalid - letter in start month",
+      "data": "1985-0I-12T23:20:50/1985-06-25T10:30:00",
+      "valid": false
+    },
+    {
+      "description": "Invalid - letter in end month",
+      "data": "1985-04-12T23:20:50/1985-0I-25T10:30:00",
+      "valid": false
+    },
+    {
+      "description": "Invalid - letter in start day",
+      "data": "1985-04-I2T23:20:50/1985-06-25T10:30:00",
+      "valid": false
+    },
+    {
+      "description": "Invalid - letter in end day",
+      "data": "1985-04-12T23:20:50/1985-06-I5T10:30:00",
+      "valid": false
+    },
+    {
+      "description": "Invalid - letter in start hour",
+      "data": "1985-04-12TI3:20:50/1985-06-25T10:30:00",
+      "valid": false
+    },
+    {
+      "description": "Invalid - letter in end hour",
+      "data": "1985-04-12T23:20:50/1985-06-25TI0:30:00",
+      "valid": false
+    },
+    {
+      "description": "Invalid - letter in start minute",
+      "data": "1985-04-12T23:I0:50/1985-06-25T10:30:00",
+      "valid": false
+    },
+    {
+      "description": "Invalid - letter in end minute",
+      "data": "1985-04-12T23:20:50/1985-06-25T10:I0:00",
+      "valid": false
+    },
+    {
+      "description": "Invalid - letter in start second",
+      "data": "1985-04-12T23:20:I0/1985-06-25T10:30:00",
+      "valid": false
+    },
+    {
+      "description": "Invalid - letter in end second",
+      "data": "1985-04-12T23:20:50/1985-06-25T10:30:I0",
+      "valid": false
+    },
+    {
+      "description": "Invalid - too short start datetime",
+      "data": "1985-04-12T23:20:5/1985-06-25T10:30:00",
+      "valid": false
+    },
+    {
+      "description": "Invalid - too short end datetime",
+      "data": "1985-04-12T23:20:50/1985-06-25T10:30:0",
+      "valid": false
+    },
+    {
+      "description": "Invalid - too long start datetime",
+      "data": "1985-04-12T23:20:500/1985-06-25T10:30:00",
+      "valid": false
+    },
+    {
+      "description": "Invalid - too long end datetime",
+      "data": "1985-04-12T23:20:50/1985-06-25T10:30:000",
+      "valid": false
+    },
+    {
+      "description": "Invalid - extra character at start",
+      "data": "X1985-04-12T23:20:50/1985-06-25T10:30:00",
+      "valid": false
+    },
+    {
+      "description": "Invalid - extra character at end",
+      "data": "1985-04-12T23:20:50/1985-06-25T10:30:00X",
+      "valid": false
+    },
+    {
+      "description": "Invalid - extra character in middle",
+      "data": "1985-04-12T23:20:50X/1985-06-25T10:30:00",
+      "valid": false
+    },
+    {
+      "description": "Invalid - space in start date",
+      "data": "1985-04- 12T23:20:50/1985-06-25T10:30:00",
+      "valid": false
+    },
+    {
+      "description": "Invalid - space in end date",
+      "data": "1985-04-12T23:20:50/1985-06- 25T10:30:00",
+      "valid": false
+    },
+    {
+      "description": "Invalid - space in start time",
+      "data": "1985-04-12T23: 20:50/1985-06-25T10:30:00",
+      "valid": false
+    },
+    {
+      "description": "Invalid - space in end time",
+      "data": "1985-04-12T23:20:50/1985-06-25T10: 30:00",
+      "valid": false
     }
   ]
 }
diff --git a/test/iso/datetime/2019/interval/start-end-ordinal-basic.test.json b/test/iso/datetime/2019/interval/start-end-ordinal-basic.test.json
index 6d866b29..f0c8ed8e 100644
--- a/test/iso/datetime/2019/interval/start-end-ordinal-basic.test.json
+++ b/test/iso/datetime/2019/interval/start-end-ordinal-basic.test.json
@@ -276,6 +276,141 @@
       "description": "Invalid - week date format instead of ordinal in end",
       "data": "1985102T232050/1985W261T103000",
       "valid": false
+    },
+    {
+      "description": "Invalid - start hour 99",
+      "data": "1985102T992050/1985176T103000",
+      "valid": false
+    },
+    {
+      "description": "Invalid - end hour 99",
+      "data": "1985102T232050/1985176T993000",
+      "valid": false
+    },
+    {
+      "description": "Invalid - start minute 99",
+      "data": "1985102T239950/1985176T103000",
+      "valid": false
+    },
+    {
+      "description": "Invalid - end minute 99",
+      "data": "1985102T232050/1985176T109900",
+      "valid": false
+    },
+    {
+      "description": "Invalid - start second 99",
+      "data": "1985102T232099/1985176T103000",
+      "valid": false
+    },
+    {
+      "description": "Invalid - end second 99",
+      "data": "1985102T232050/1985176T103099",
+      "valid": false
+    },
+    {
+      "description": "Invalid - letter in start year",
+      "data": "I985102T232050/1985176T103000",
+      "valid": false
+    },
+    {
+      "description": "Invalid - letter in end year",
+      "data": "1985102T232050/I985176T103000",
+      "valid": false
+    },
+    {
+      "description": "Invalid - letter in start day",
+      "data": "1985I02T232050/1985176T103000",
+      "valid": false
+    },
+    {
+      "description": "Invalid - letter in end day",
+      "data": "1985102T232050/1985I76T103000",
+      "valid": false
+    },
+    {
+      "description": "Invalid - letter in start hour",
+      "data": "1985102TI32050/1985176T103000",
+      "valid": false
+    },
+    {
+      "description": "Invalid - letter in end hour",
+      "data": "1985102T232050/1985176TI03000",
+      "valid": false
+    },
+    {
+      "description": "Invalid - letter in start minute",
+      "data": "1985102T23I050/1985176T103000",
+      "valid": false
+    },
+    {
+      "description": "Invalid - letter in end minute",
+      "data": "1985102T232050/1985176T10I000",
+      "valid": false
+    },
+    {
+      "description": "Invalid - letter in start second",
+      "data": "1985102T2320I0/1985176T103000",
+      "valid": false
+    },
+    {
+      "description": "Invalid - letter in end second",
+      "data": "1985102T232050/1985176T1030I0",
+      "valid": false
+    },
+    {
+      "description": "Invalid - too short start datetime",
+      "data": "1985102T23205/1985176T103000",
+      "valid": false
+    },
+    {
+      "description": "Invalid - too short end datetime",
+      "data": "1985102T232050/1985176T10300",
+      "valid": false
+    },
+    {
+      "description": "Invalid - too long start datetime",
+      "data": "1985102T2320500/1985176T103000",
+      "valid": false
+    },
+    {
+      "description": "Invalid - too long end datetime",
+      "data": "1985102T232050/1985176T1030000",
+      "valid": false
+    },
+    {
+      "description": "Invalid - extra character at start",
+      "data": "X1985102T232050/1985176T103000",
+      "valid": false
+    },
+    {
+      "description": "Invalid - extra character at end",
+      "data": "1985102T232050/1985176T103000X",
+      "valid": false
+    },
+    {
+      "description": "Invalid - extra character in middle",
+      "data": "1985102T232050X/1985176T103000",
+      "valid": false
+    },
+    {
+      "description": "Invalid - space in start date",
+      "data": "1985 102T232050/1985176T103000",
+      "valid": false
+    },
+    {
+      "description": "Invalid - space in end date",
+      "data": "1985102T232050/1985 176T103000",
+      "valid": false
+    },
+    {
+      "description": "Invalid - space in start time",
+      "data": "1985102T23 2050/1985176T103000",
+      "valid": false
+    },
+    {
+      "description": "Invalid - space in end time",
+      "data": "1985102T232050/1985176T10 3000",
+      "valid": false
     }
   ]
 }
diff --git a/test/iso/datetime/2019/interval/start-end-ordinal-extended.test.json b/test/iso/datetime/2019/interval/start-end-ordinal-extended.test.json
index 930dc0a9..25f5e5fd 100644
--- a/test/iso/datetime/2019/interval/start-end-ordinal-extended.test.json
+++ b/test/iso/datetime/2019/interval/start-end-ordinal-extended.test.json
@@ -261,6 +261,141 @@
       "description": "Invalid - week date format instead of ordinal in end",
       "data": "1985-102T23:20:50/1985-W26-1T10:30:00",
       "valid": false
+    },
+    {
+      "description": "Invalid - start hour 99",
+      "data": "1985-102T99:20:50/1985-176T10:30:00",
+      "valid": false
+    },
+    {
+      "description": "Invalid - end hour 99",
+      "data": "1985-102T23:20:50/1985-176T99:30:00",
+      "valid": false
+    },
+    {
+      "description": "Invalid - start minute 99",
+      "data": "1985-102T23:99:50/1985-176T10:30:00",
+      "valid": false
+    },
+    {
+      "description": "Invalid - end minute 99",
+      "data": "1985-102T23:20:50/1985-176T10:99:00",
+      "valid": false
+    },
+    {
+      "description": "Invalid - start second 99",
+      "data": "1985-102T23:20:99/1985-176T10:30:00",
+      "valid": false
+    },
+    {
+      "description": "Invalid - end second 99",
+      "data": "1985-102T23:20:50/1985-176T10:30:99",
+      "valid": false
+    },
+    {
+      "description": "Invalid - letter in start year",
+      "data": "I985-102T23:20:50/1985-176T10:30:00",
+      "valid": false
+    },
+    {
+      "description": "Invalid - letter in end year",
+      "data": "1985-102T23:20:50/I985-176T10:30:00",
+      "valid": false
+    },
+    {
+      "description": "Invalid - letter in start day",
+      "data": "1985-I02T23:20:50/1985-176T10:30:00",
+      "valid": false
+    },
+    {
+      "description": "Invalid - letter in end day",
+      "data": "1985-102T23:20:50/1985-I76T10:30:00",
+      "valid": false
+    },
+    {
+      "description": "Invalid - letter in start hour",
+      "data": "1985-102TI3:20:50/1985-176T10:30:00",
+      "valid": false
+    },
+    {
+      "description": "Invalid - letter in end hour",
+      "data": "1985-102T23:20:50/1985-176TI0:30:00",
+      "valid": false
+    },
+    {
+      "description": "Invalid - letter in start minute",
+      "data": "1985-102T23:I0:50/1985-176T10:30:00",
+      "valid": false
+    },
+    {
+      "description": "Invalid - letter in end minute",
+      "data": "1985-102T23:20:50/1985-176T10:I0:00",
+      "valid": false
+    },
+    {
+      "description": "Invalid - letter in start second",
+      "data": "1985-102T23:20:I0/1985-176T10:30:00",
+      "valid": false
+    },
+    {
+      "description": "Invalid - letter in end second",
+      "data": "1985-102T23:20:50/1985-176T10:30:I0",
+      "valid": false
+    },
+    {
+      "description": "Invalid - too short start datetime",
+      "data": "1985-102T23:20:5/1985-176T10:30:00",
+      "valid": false
+    },
+    {
+      "description": "Invalid - too short end datetime",
+      "data": "1985-102T23:20:50/1985-176T10:30:0",
+      "valid": false
+    },
+    {
+      "description": "Invalid - too long start datetime",
+      "data": "1985-102T23:20:500/1985-176T10:30:00",
+      "valid": false
+    },
+    {
+      "description": "Invalid - too long end datetime",
+      "data": "1985-102T23:20:50/1985-176T10:30:000",
+      "valid": false
+    },
+    {
+      "description": "Invalid - extra character at start",
+      "data": "X1985-102T23:20:50/1985-176T10:30:00",
+      "valid": false
+    },
+    {
+      "description": "Invalid - extra character at end",
+      "data": "1985-102T23:20:50/1985-176T10:30:00X",
+      "valid": false
+    },
+    {
+      "description": "Invalid - extra character in middle",
+      "data": "1985-102T23:20:50X/1985-176T10:30:00",
+      "valid": false
+    },
+    {
+      "description": "Invalid - space in start date",
+      "data": "1985- 102T23:20:50/1985-176T10:30:00",
+      "valid": false
+    },
+    {
+      "description": "Invalid - space in end date",
+      "data": "1985-102T23:20:50/1985- 176T10:30:00",
+      "valid": false
+    },
+    {
+      "description": "Invalid - space in start time",
+      "data": "1985-102T23: 20:50/1985-176T10:30:00",
+      "valid": false
+    },
+    {
+      "description": "Invalid - space in end time",
+      "data": "1985-102T23:20:50/1985-176T10: 30:00",
+      "valid": false
     }
   ]
 }
diff --git a/test/iso/datetime/2019/interval/start-end-week-basic.test.json b/test/iso/datetime/2019/interval/start-end-week-basic.test.json
index 568c7369..8ae6f2ec 100644
--- a/test/iso/datetime/2019/interval/start-end-week-basic.test.json
+++ b/test/iso/datetime/2019/interval/start-end-week-basic.test.json
@@ -276,6 +276,151 @@
       "description": "Valid - reversed order (end before start is syntactically valid per ISO 8601)",
       "data": "1985W261T103000/1985W155T232050",
       "valid": true
+    },
+    {
+      "description": "Invalid - start hour 99",
+      "data": "1985W155T992050/1985W261T103000",
+      "valid": false
+    },
+    {
+      "description": "Invalid - end hour 99",
+      "data": "1985W155T232050/1985W261T993000",
+      "valid": false
+    },
+    {
+      "description": "Invalid - start minute 99",
+      "data": "1985W155T239950/1985W261T103000",
+      "valid": false
+    },
+    {
+      "description": "Invalid - end minute 99",
+      "data": "1985W155T232050/1985W261T109900",
+      "valid": false
+    },
+    {
+      "description": "Invalid - start second 99",
+      "data": "1985W155T232099/1985W261T103000",
+      "valid": false
+    },
+    {
+      "description": "Invalid - end second 99",
+      "data": "1985W155T232050/1985W261T103099",
+      "valid": false
+    },
+    {
+      "description": "Invalid - letter in start year",
+      "data": "I985W155T232050/1985W261T103000",
+      "valid": false
+    },
+    {
+      "description": "Invalid - letter in end year",
+      "data": "1985W155T232050/I985W261T103000",
+      "valid": false
+    },
+    {
+      "description": "Invalid - letter in start week",
+      "data": "1985WI55T232050/1985W261T103000",
+      "valid": false
+    },
+    {
+      "description": "Invalid - letter in end week",
+      "data": "1985W155T232050/1985WI61T103000",
+      "valid": false
+    },
+    {
+      "description": "Invalid - letter in start day",
+      "data": "1985W15IT232050/1985W261T103000",
+      "valid": false
+    },
+    {
+      "description": "Invalid - letter in end day",
+      "data": "1985W155T232050/1985W26IT103000",
+      "valid": false
+    },
+    {
+      "description": "Invalid - letter in start hour",
+      "data": "1985W155TI32050/1985W261T103000",
+      "valid": false
+    },
+    {
+      "description": "Invalid - letter in end hour",
+      "data": "1985W155T232050/1985W261TI03000",
+      "valid": false
+    },
+    {
+      "description": "Invalid - letter in start minute",
+      "data": "1985W155T23I050/1985W261T103000",
+      "valid": false
+    },
+    {
+      "description": "Invalid - letter in end minute",
+      "data": "1985W155T232050/1985W261T10I000",
+      "valid": false
+    },
+    {
+      "description": "Invalid - letter in start second",
+      "data": "1985W155T2320I0/1985W261T103000",
+      "valid": false
+    },
+    {
+      "description": "Invalid - letter in end second",
+      "data": "1985W155T232050/1985W261T1030I0",
+      "valid": false
+    },
+    {
+      "description": "Invalid - too short start datetime",
+      "data": "1985W155T23205/1985W261T103000",
+      "valid": false
+    },
+    {
+      "description": "Invalid - too short end datetime",
+      "data": "1985W155T232050/1985W261T10300",
+      "valid": false
+    },
+    {
+      "description": "Invalid - too long start datetime",
+      "data": "1985W155T2320500/1985W261T103000",
+      "valid": false
+    },
+    {
+      "description": "Invalid - too long end datetime",
+      "data": "1985W155T232050/1985W261T1030000",
+      "valid": false
+    },
+    {
+      "description": "Invalid - extra character at start",
+      "data": "X1985W155T232050/1985W261T103000",
+      "valid": false
+    },
+    {
+      "description": "Invalid - extra character at end",
+      "data": "1985W155T232050/1985W261T103000X",
+      "valid": false
+    },
+    {
+      "description": "Invalid - extra character in middle",
+      "data": "1985W155T232050X/1985W261T103000",
+      "valid": false
+    },
+    {
+      "description": "Invalid - space in start date",
+      "data": "1985W15 5T232050/1985W261T103000",
+      "valid": false
+    },
+    {
+      "description": "Invalid - space in end date",
+      "data": "1985W155T232050/1985W26 1T103000",
+      "valid": false
+    },
+    {
+      "description": "Invalid - space in start time",
+      "data": "1985W155T23 2050/1985W261T103000",
+      "valid": false
+    },
+    {
+      "description": "Invalid - space in end time",
+      "data": "1985W155T232050/1985W261T10 3000",
+      "valid": false
     }
   ]
 }
diff --git a/test/iso/datetime/2019/interval/start-end-week-extended.test.json b/test/iso/datetime/2019/interval/start-end-week-extended.test.json
index 150cfab6..40e4a922 100644
--- a/test/iso/datetime/2019/interval/start-end-week-extended.test.json
+++ b/test/iso/datetime/2019/interval/start-end-week-extended.test.json
@@ -296,6 +296,151 @@
       "description": "Valid - reversed order (end before start is syntactically valid per ISO 8601)",
       "data": "1985-W26-1T10:30:00/1985-W15-5T23:20:50",
       "valid": true
+    },
+    {
+      "description": "Invalid - start hour 99",
+      "data": "1985-W15-5T99:20:50/1985-W26-1T10:30:00",
+      "valid": false
+    },
+    {
+      "description": "Invalid - end hour 99",
+      "data": "1985-W15-5T23:20:50/1985-W26-1T99:30:00",
+      "valid": false
+    },
+    {
+      "description": "Invalid - start minute 99",
+      "data": "1985-W15-5T23:99:50/1985-W26-1T10:30:00",
+      "valid": false
+    },
+    {
+      "description": "Invalid - end minute 99",
+      "data": "1985-W15-5T23:20:50/1985-W26-1T10:99:00",
+      "valid": false
+    },
+    {
+      "description": "Invalid - start second 99",
+      "data": "1985-W15-5T23:20:99/1985-W26-1T10:30:00",
+      "valid": false
+    },
+    {
+      "description": "Invalid - end second 99",
+      "data": "1985-W15-5T23:20:50/1985-W26-1T10:30:99",
+      "valid": false
+    },
+    {
+      "description": "Invalid - letter in start year",
+      "data": "I985-W15-5T23:20:50/1985-W26-1T10:30:00",
+      "valid": false
+    },
+    {
+      "description": "Invalid - letter in end year",
+      "data": "1985-W15-5T23:20:50/I985-W26-1T10:30:00",
+      "valid": false
+    },
+    {
+      "description": "Invalid - letter in start week",
+      "data": "1985-WI5-5T23:20:50/1985-W26-1T10:30:00",
+      "valid": false
+    },
+    {
+      "description": "Invalid - letter in end week",
+      "data": "1985-W15-5T23:20:50/1985-WI6-1T10:30:00",
+      "valid": false
+    },
+    {
+      "description": "Invalid - letter in start day",
+      "data": "1985-W15-IT23:20:50/1985-W26-1T10:30:00",
+      "valid": false
+    },
+    {
+      "description": "Invalid - letter in end day",
+      "data": "1985-W15-5T23:20:50/1985-W26-IT10:30:00",
+      "valid": false
+    },
+    {
+      "description": "Invalid - letter in start hour",
+      "data": "1985-W15-5TI3:20:50/1985-W26-1T10:30:00",
+      "valid": false
+    },
+    {
+      "description": "Invalid - letter in end hour",
+      "data": "1985-W15-5T23:20:50/1985-W26-1TI0:30:00",
+      "valid": false
+    },
+    {
+      "description": "Invalid - letter in start minute",
+      "data": "1985-W15-5T23:I0:50/1985-W26-1T10:30:00",
+      "valid": false
+    },
+    {
+      "description": "Invalid - letter in end minute",
+      "data": "1985-W15-5T23:20:50/1985-W26-1T10:I0:00",
+      "valid": false
+    },
+    {
+      "description": "Invalid - letter in start second",
+      "data": "1985-W15-5T23:20:I0/1985-W26-1T10:30:00",
+      "valid": false
+    },
+    {
+      "description": "Invalid - letter in end second",
+      "data": "1985-W15-5T23:20:50/1985-W26-1T10:30:I0",
+      "valid": false
+    },
+    {
+      "description": "Invalid - too short start datetime",
+      "data": "1985-W15-5T23:20:5/1985-W26-1T10:30:00",
+      "valid": false
+    },
+    {
+      "description": "Invalid - too short end datetime",
+      "data": "1985-W15-5T23:20:50/1985-W26-1T10:30:0",
+      "valid": false
+    },
+    {
+      "description": "Invalid - too long start datetime",
+      "data": "1985-W15-5T23:20:500/1985-W26-1T10:30:00",
+      "valid": false
+    },
+    {
+      "description": "Invalid - too long end datetime",
+      "data": "1985-W15-5T23:20:50/1985-W26-1T10:30:000",
+      "valid": false
+    },
+    {
+      "description": "Invalid - extra character at start",
+      "data": "X1985-W15-5T23:20:50/1985-W26-1T10:30:00",
+      "valid": false
+    },
+    {
+      "description": "Invalid - extra character at end",
+      "data": "1985-W15-5T23:20:50/1985-W26-1T10:30:00X",
+      "valid": false
+    },
+    {
+      "description": "Invalid - extra character in middle",
+      "data": "1985-W15-5T23:20:50X/1985-W26-1T10:30:00",
+      "valid": false
+    },
+    {
+      "description": "Invalid - space in start date",
+      "data": "1985-W15- 5T23:20:50/1985-W26-1T10:30:00",
+      "valid": false
+    },
+    {
+      "description": "Invalid - space in end date",
+      "data": "1985-W15-5T23:20:50/1985-W26- 1T10:30:00",
+      "valid": false
+    },
+    {
+      "description": "Invalid - space in start time",
+      "data": "1985-W15-5T23: 20:50/1985-W26-1T10:30:00",
+      "valid": false
+    },
+    {
+      "description": "Invalid - space in end time",
+      "data": "1985-W15-5T23:20:50/1985-W26-1T10: 30:00",
+      "valid": false
     }
   ]
 }