Added memory module

1 files changed, 52 insertions, 0 deletions

diff --git a/spec/spec/memory.js b/spec/spec/memory.js
new file mode 100644
index 0000000..b3a60e0
--- /dev/null
+++ b/spec/spec/memory.js
@@ -0,0 +1,52 @@
+describe('Memory', function () {
+  var rect
+
+  beforeEach(function() {
+    rect = draw.rect(100,120)
+  })
+
+  afterEach(function() {
+    draw.clear()
+  })
+
+  describe('remember()', function() {
+    it('accepts an object with values', function() {
+      rect.remember({ bbox: rect.bbox() })
+      rect.size(200,300)
+      expect(rect.remember('bbox').width).toBe(100)
+    })
+    it('accepts key / value arguments', function() {
+      rect.remember('fill', rect.attr('fill'))
+      rect.fill('#f09')
+      expect(rect.remember('fill')).toBe('#000000')
+    })
+    it('acts as a getter with one string argument', function() {
+      rect.remember('opacity', 0.85)
+      expect(rect.remember('opacity')).toBe(0.85)
+    })
+  })
+
+  describe('forget()', function() {
+    it('deletes a given memory', function() {
+      rect.remember({ grass: 'is green', one: 1 })
+      rect.forget('grass')
+      expect(rect.remember('grass')).toBe(undefined)
+      expect(rect.remember('one')).toBe(1)
+    })
+    it('accepts multiple arguments as different memories', function() {
+      rect.remember({ grass: 'might be purple', two: 2, sea: true })
+      rect.forget('grass', 'sea')
+      expect(rect.remember('grass')).toBe(undefined)
+      expect(rect.remember('sea')).toBe(undefined)
+      expect(rect.remember('two')).toBe(2)
+    })
+    it('clears the whole memory without arguments', function() {
+      rect.remember({ grass: 'is never pink', three: 3, tree: true })
+      rect.forget()
+      expect(rect.remember('grass')).toBe(undefined)
+      expect(rect.remember('tree')).toBe(undefined)
+      expect(rect.remember('three')).toBe(undefined)
+    })
+  })
+
+})
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