1 files changed, 56 insertions, 0 deletions
diff --git a/spec/ruby/library/date/iso8601_spec.rb b/spec/ruby/library/date/iso8601_spec.rb
new file mode 100644
index 0000000000..26815bd76c
--- /dev/null
+++ b/spec/ruby/library/date/iso8601_spec.rb
@@ -0,0 +1,56 @@
+require_relative '../../spec_helper'
+require 'date'
+
+describe "Date.iso8601" do
+  it "parses YYYY-MM-DD into a Date object" do
+    d = Date.iso8601("2018-01-01")
+    d.should == Date.civil(2018, 1, 1)
+  end
+
+  it "parses YYYYMMDD into a Date object" do
+    d = Date.iso8601("20180715")
+    d.should == Date.civil(2018, 7, 15)
+  end
+
+  it "parses a negative Date" do
+    d = Date.iso8601("-4712-01-01")
+    d.should == Date.civil(-4712, 1, 1)
+  end
+
+  it "parses a StringSubclass into a Date object" do
+    d = Date.iso8601(Class.new(String).new("-4712-01-01"))
+    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(Date::Error, "invalid date")
+  end
+
+  it "raises a Date::Error when passed a nil" do
+    -> {
+      Date.iso8601(nil)
+    }.should.raise(Date::Error, "invalid date")
+  end
+
+  it "raises a TypeError when passed an Object" do
+    -> { Date.iso8601(Object.new) }.should.raise(TypeError)
+  end
+end
+
+describe "Date._iso8601" do
+  it "returns an empty hash if the argument is a invalid Date" do
+    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(TypeError)
+  end
+end