Add support for Swift 3.0

Tests/StencilTests/ForNodeSpec.swift

@@ -0,0 +1,66 @@
+import Spectre
+import Stencil
+import Foundation
+
+
+func testForNode() {
+  describe("ForNode") {
+    let context = Context(dictionary: [
+      "items": [1, 2, 3],
+      "emptyItems": [Int](),
+    ])
+
+    $0.it("renders the given nodes for each item") {
+      let nodes: [NodeType] = [VariableNode(variable: "item")]
+      let node = ForNode(variable: "items", loopVariable: "item", nodes: nodes, emptyNodes: [])
+      try expect(try node.render(context)) == "123"
+    }
+
+    $0.it("renders the given empty nodes when no items found item") {
+      let nodes: [NodeType] = [VariableNode(variable: "item")]
+      let emptyNodes: [NodeType] = [TextNode(text: "empty")]
+      let node = ForNode(variable: "emptyItems", loopVariable: "item", nodes: nodes, emptyNodes: emptyNodes)
+      try expect(try node.render(context)) == "empty"
+    }
+
+    $0.it("renders a context variable of type Array<Any>") {
+      let any_context = Context(dictionary: [
+        "items": ([1, 2, 3] as [Any])
+      ])
+
+      let nodes: [NodeType] = [VariableNode(variable: "item")]
+      let node = ForNode(variable: "items", loopVariable: "item", nodes: nodes, emptyNodes: [])
+      try expect(try node.render(any_context)) == "123" 
+    }
+
+#if os(OSX)
+    $0.it("renders a context variable of type NSArray") {
+      let nsarray_context = Context(dictionary: [
+        "items": NSArray(array: [1, 2, 3])
+      ])
+
+      let nodes: [NodeType] = [VariableNode(variable: "item")]
+      let node = ForNode(variable: "items", loopVariable: "item", nodes: nodes, emptyNodes: [])
+      try expect(try node.render(nsarray_context)) == "123"
+    }
+#endif
+
+    $0.it("renders the given nodes while providing if the item is first in the context") {
+      let nodes: [NodeType] = [VariableNode(variable: "item"), VariableNode(variable: "forloop.first")]
+      let node = ForNode(variable: "items", loopVariable: "item", nodes: nodes, emptyNodes: [])
+      try expect(try node.render(context)) == "1true2false3false"
+    }
+
+    $0.it("renders the given nodes while providing if the item is last in the context") {
+      let nodes: [NodeType] = [VariableNode(variable: "item"), VariableNode(variable: "forloop.last")]
+      let node = ForNode(variable: "items", loopVariable: "item", nodes: nodes, emptyNodes: [])
+      try expect(try node.render(context)) == "1false2false3true"
+    }
+
+    $0.it("renders the given nodes while providing item counter") {
+      let nodes: [NodeType] = [VariableNode(variable: "item"), VariableNode(variable: "forloop.counter")]
+      let node = ForNode(variable: "items", loopVariable: "item", nodes: nodes, emptyNodes: [])
+      try expect(try node.render(context)) == "112233"
+    }
+  }
+}