✨ year(), monthNumber(), day() extensions for Date (fixes #10)

CHANGELOG.md

@@ -7,6 +7,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ## [Unreleased]
 
 - [Date.today(), Date.yesterday(), Date.tomorrow() (#9)](https://github.com/ngarbezza/oow/issues/9)
+- [day(), monthNumber(), year() for Date objects (#10)](https://github.com/ngarbezza/oow/issues/10)
 
 ## [1.7.0] - 2019-10-01
 

src/date_extensions.js

@@ -18,7 +18,17 @@ const DateExtensions = {
       return result;
     },
   },
-  instance: { },
+  instance: {
+    day() {
+      return this.getDate();
+    },
+    monthNumber() {
+      return this.getMonth() + 1;
+    },
+    year() {
+      return this.getFullYear();
+    },
+  },
 };
 
 applyExtension(DateExtensions, Date);

test/date_extension_test.js

@@ -9,16 +9,33 @@ suite('messages added to Date', () => {
     const now = new Date();
     assert.areEqual(today.toString(), now.toString());
   });
+
   test('tomorrow() returns tomorrows date', () =>  {
     const tomorrow = Date.tomorrow();
     const now = new Date();
     now.setDate(now.getDate() + 1);
     assert.areEqual(tomorrow.toString(), now.toString());
   });
+
   test('yesterday() returns yesterdays date', () =>  {
     const yesterday = Date.yesterday();
     const now = new Date();
     now.setDate(now.getDate() - 1);
     assert.areEqual(yesterday.toString(), now.toString());
   });
+
+  test('day() is equivalent to getDate()', () => {
+    const now = new Date();
+    assert.areEqual(now.day(), now.getDate());
+  });
+
+  test('monthNumber() is equivalent to getMonth() but starting month numbers at 1', () => {
+    const now = new Date();
+    assert.areEqual(now.monthNumber(), now.getMonth() + 1);
+  });
+
+  test('year() is equivalent to getFullYear()', () => {
+    const now = new Date();
+    assert.areEqual(now.year(), now.getFullYear());
+  });
 });