Update to Spectre 0.9.0 (#247)

* update to Spectre 0.9.0

* fix variable spec tests

* fix flatMap warning

* updated CHANGELOG

Tests/StencilTests/NodeSpec.swift

@@ -1,7 +1,7 @@
+import XCTest
 import Spectre
 @testable import Stencil
 
-
 class ErrorNode : NodeType {
   let token: Token?
   init(token: Token? = nil) {
@@ -13,52 +13,53 @@ class ErrorNode : NodeType {
   }
 }
 
+class NodeTests: XCTestCase {
+  func testNode() {
+    describe("Node") {
+      let context = Context(dictionary: [
+        "name": "Kyle",
+        "age": 27,
+        "items": [1, 2, 3],
+        ])
 
-func testNode() {
-  describe("Node") {
-    let context = Context(dictionary: [
-      "name": "Kyle",
-      "age": 27,
-      "items": [1, 2, 3],
-    ])
-
-    $0.describe("TextNode") {
-      $0.it("renders the given text") {
-        let node = TextNode(text: "Hello World")
-        try expect(try node.render(context)) == "Hello World"
-      }
-    }
-
-    $0.describe("VariableNode") {
-      $0.it("resolves and renders the variable") {
-        let node = VariableNode(variable: Variable("name"))
-        try expect(try node.render(context)) == "Kyle"
+      $0.describe("TextNode") {
+        $0.it("renders the given text") {
+          let node = TextNode(text: "Hello World")
+          try expect(try node.render(context)) == "Hello World"
+        }
       }
 
-      $0.it("resolves and renders a non string variable") {
-        let node = VariableNode(variable: Variable("age"))
-        try expect(try node.render(context)) == "27"
-      }
-    }
+      $0.describe("VariableNode") {
+        $0.it("resolves and renders the variable") {
+          let node = VariableNode(variable: Variable("name"))
+          try expect(try node.render(context)) == "Kyle"
+        }
 
-    $0.describe("rendering nodes") {
-      $0.it("renders the nodes") {
-        let nodes: [NodeType] = [
-          TextNode(text:"Hello "),
-          VariableNode(variable: "name"),
-        ]
-
-        try expect(try renderNodes(nodes, context)) == "Hello Kyle"
+        $0.it("resolves and renders a non string variable") {
+          let node = VariableNode(variable: Variable("age"))
+          try expect(try node.render(context)) == "27"
+        }
       }
 
-      $0.it("correctly throws a nodes failure") {
-        let nodes: [NodeType] = [
-          TextNode(text:"Hello "),
-          VariableNode(variable: "name"),
-          ErrorNode(),
-        ]
+      $0.describe("rendering nodes") {
+        $0.it("renders the nodes") {
+          let nodes: [NodeType] = [
+            TextNode(text:"Hello "),
+            VariableNode(variable: "name"),
+            ]
 
-        try expect(try renderNodes(nodes, context)).toThrow(TemplateSyntaxError("Custom Error"))
+          try expect(try renderNodes(nodes, context)) == "Hello Kyle"
+        }
+
+        $0.it("correctly throws a nodes failure") {
+          let nodes: [NodeType] = [
+            TextNode(text:"Hello "),
+            VariableNode(variable: "name"),
+            ErrorNode(),
+            ]
+
+          try expect(try renderNodes(nodes, context)).toThrow(TemplateSyntaxError("Custom Error"))
+        }
       }
     }
   }