Include node protocol along with text and variable nodes

StencilTests/NodeTests.swift

@@ -0,0 +1,59 @@
+//
+//  NodeTests.swift
+//  Stencil
+//
+//  Created by Kyle Fuller on 23/10/2014.
+//  Copyright (c) 2014 Cocode. All rights reserved.
+//
+
+import Cocoa
+import XCTest
+import Stencil
+
+class NodeTests: XCTestCase {
+    var context:Context!
+
+    override func setUp() {
+        context = Context(dictionary: [
+            "name": "Kyle",
+            "age": 27,
+        ])
+    }
+}
+
+class TextNodeTests: NodeTests {
+    func testTextNodeResolvesText() {
+        let node = TextNode(text:"Hello World")
+        let result = node.render(context)
+
+        XCTAssertEqual(result.0!, "Hello World")
+    }
+
+    func testTwoIdenticalTextNodesAreEqual() {
+        let node1 = TextNode(text:"Hello World")
+        let node2 = TextNode(text:"Hello World")
+        XCTAssertEqual(node1, node2)
+    }
+}
+
+class VariableNodeTests: NodeTests {
+    func testVariableNodeResolvesVariable() {
+        let node = VariableNode(variable:Variable("name"))
+        let result = node.render(context)
+
+        XCTAssertEqual(result.0!, "Kyle")
+    }
+
+    func testVariableNodeResolvesNonStringVariable() {
+        let node = VariableNode(variable:Variable("age"))
+        let result = node.render(context)
+
+        XCTAssertEqual(result.0!, "27")
+    }
+
+    func testTwoIdenticalVariableNodesAreEqual() {
+        let node1 = VariableNode(variable:Variable("name"))
+        let node2 = VariableNode(variable:Variable("name"))
+        XCTAssertEqual(node1, node2)
+    }
+}