Add tokens and token parser

StencilTests/ParserTests.swift

@@ -0,0 +1,48 @@
+//
+//  ParserTests.swift
+//  Stencil
+//
+//  Created by Kyle Fuller on 23/10/2014.
+//  Copyright (c) 2014 Cocode. All rights reserved.
+//
+
+import Cocoa
+import XCTest
+import Stencil
+
+class TokenParserTests: XCTestCase {
+    func testParsingTextToken() {
+        let parser = TokenParser(tokens: [
+            Token.Text(value: "Hello World")
+        ])
+
+        let nodes = parser.parse()
+        let node = nodes.first as TextNode!
+
+        XCTAssertEqual(nodes.count, 1)
+        XCTAssertEqual(node.text, "Hello World")
+    }
+
+    func testParsingVariableToken() {
+        let parser = TokenParser(tokens: [
+            Token.Variable(value: "name")
+        ])
+
+        let nodes = parser.parse()
+        let node = nodes.first as VariableNode!
+        let variable = node.variable
+
+        XCTAssertEqual(nodes.count, 1)
+        XCTAssertEqual(variable, Variable("name"))
+    }
+
+    func testParsingCommentToken() {
+        let parser = TokenParser(tokens: [
+            Token.Comment(value: "Secret stuff!")
+        ])
+
+        let nodes = parser.parse()
+
+        XCTAssertEqual(nodes.count, 0)
+    }
+}