Refactor, units, tests

test/unit/prepare.js

@@ -0,0 +1,44 @@
+const p = require('../../src/prepare')
+
+describe('Prepare', function() {
+    it('unnest', function() {
+        p.unnest({'a.b.c': 1}).should.deep.equal({a: {b: {c: 1}}})
+        p.unnest({'a.b.c': {
+            d: 2,
+            'e.f': 3
+        }}).should.deep.equal({a: {b: {c: {d: 2, e: {f: 3}}}}})
+    })
+
+    it('extend', function() {
+        p.extend('something', undefined).should.equal('something')
+        should.equal(p.extend('something', '!!unset'), undefined)
+        p.extend(undefined, 'something').should.equal('something')
+        p.extend(28, 'something').should.equal('something')
+        p.extend('something', 28).should.equal(28)
+        p.extend(27, 28).should.equal(28)
+        p.extend({a: 1, c: 1, d: 1}, {b: 2, c: 2, d: '!!unset'}).should.deep.equal({a: 1, b: 2, c: 2})
+        p.extend([3, 2, 1], [null, 4, 5]).should.deep.equal([3, 4, 5])
+    })
+
+    it('inherit', function() {
+        p.inherit({
+            a: {
+                x: 1,
+                y: 2
+            },
+            b: {
+                extends: 'a',
+                z: 3
+            },
+            c: {
+                extends: 'b',
+                w: 4
+            }
+        }).c.should.deep.equal({
+            x: 1,
+            y: 2,
+            z: 3,
+            w: 4
+        })
+    })
+})