From c6e9c28fd23488c89266a7344709601717e00c79 Mon Sep 17 00:00:00 2001
From: Herwin <herwinw@users.noreply.github.com>
Date: Mon, 13 Nov 2023 20:56:42 +0100
Subject: [PATCH] Extend specs for Date.iso8601

Include a few invalid inputs, mostly to illustrate the difference
between `Date.iso8601` and `Date._iso8601`
---
 library/date/iso8601_spec.rb | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)

diff --git a/library/date/iso8601_spec.rb b/library/date/iso8601_spec.rb
index a29652014e..af66845a6b 100644
--- a/library/date/iso8601_spec.rb
+++ b/library/date/iso8601_spec.rb
@@ -22,6 +22,18 @@
     d.should == Date.civil(-4712, 1, 1)
   end
 
+  it "raises a Date::Error if the argument is a invalid Date" do
+    -> {
+      Date.iso8601('invalid')
+    }.should raise_error(Date::Error, "invalid date")
+  end
+
+  it "raises a Date::Error when passed a nil" do
+    -> {
+      Date.iso8601(nil)
+    }.should raise_error(Date::Error, "invalid date")
+  end
+
   it "raises a TypeError when passed an Object" do
     -> { Date.iso8601(Object.new) }.should raise_error(TypeError)
   end
@@ -32,4 +44,13 @@
     h = Date._iso8601('invalid')
     h.should == {}
   end
+
+  it "returns an empty hash if the argument is nil" do
+    h = Date._iso8601(nil)
+    h.should == {}
+  end
+
+  it "raises a TypeError when passed an Object" do
+    -> { Date._iso8601(Object.new) }.should raise_error(TypeError)
+  end
 end