From 79435f9a93d91b3aa9d478544fe60f368ad3fbc3 Mon Sep 17 00:00:00 2001
From: ee7 <45465154+ee7@users.noreply.github.com>
Date: Sun, 27 Dec 2020 21:30:01 +0100
Subject: [PATCH] grade-school: Change a UUID to be version 4

Commit 03529d08e743 (#1735) added a new test case for the `grade-school`
exercise, but the UUID added was version 1 rather than version 4. This
was not caught by CI because the regex in the schema validator was
too permissive (fixed by #1759).

Some reasons to prefer version 4 UUIDs:
- Version 4 is the right version for a fully random and unique
  identifer; we don't want to indicate anything about the machine that
  generated the UUID, and version 1 UUIDs have a timestamp and MAC
  address component.
- All of the other UUIDs currently in `problem-specifications` are valid
  version 4 UUIDs.
- `configlet uuid` generates a version 4 UUID.
- A reader familiar with the UUID specification (RFC 4122) might see a
  version 1 UUID and infer that the timestamp or MAC address component
  is useful, causing them to wonder why the others are version 4.
- A user who generates a version 1 UUID might unintentionally leak their
  MAC address.

See also:
- https://tools.ietf.org/html/rfc4122.html
---
 exercises/grade-school/canonical-data.json | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/exercises/grade-school/canonical-data.json b/exercises/grade-school/canonical-data.json
index 61f78ac529..51210d8330 100644
--- a/exercises/grade-school/canonical-data.json
+++ b/exercises/grade-school/canonical-data.json
@@ -15,7 +15,7 @@
             "expected": ["Aimee"]
         },
         {
-          "uuid": "dece43c8-3ba5-11eb-8fdf-7f8daeaeb5f2",
+          "uuid": "c125dab7-2a53-492f-a99a-56ad511940d8",
           "description": "A student can't be in two different grades",
           "property": "roster",
           "input": {