refactor: Add test for parsing date in schedule_parser_test.go

internal/parsers/schedule_parser_test.go

@@ -64,6 +64,17 @@ var _ = Describe("Schedule Parser", func() {
 
 	})
 
+	Describe("Date Parser", func() {
+		Context("parse : 31OCT", func() {
+			message := "31OCT"
+			data := parse(message, DateExpression)
+			It("should return a valid date", func() {
+				Expect(data).NotTo(BeNil())
+				Expect(data[Date]).To(Equal("31OCT"))
+			})
+		})
+	})
+
 	Describe("Flight Number Parser", func() {
 		Context("parse : FM9134", func() {
 			It("should return a valid flight number", func() {