Update to Spectre 0.9.0 (#247)

* update to Spectre 0.9.0

* fix variable spec tests

* fix flatMap warning

* updated CHANGELOG

Tests/StencilTests/ParserSpec.swift

@@ -1,61 +1,63 @@
+import XCTest
 import Spectre
 @testable import Stencil
 
+class TokenParserTests: XCTestCase {
+  func testTokenParser() {
+    describe("TokenParser") {
+      $0.it("can parse a text token") {
+        let parser = TokenParser(tokens: [
+          .text(value: "Hello World", at: .unknown)
+          ], environment: Environment())
 
-func testTokenParser() {
-  describe("TokenParser") {
-    $0.it("can parse a text token") {
-      let parser = TokenParser(tokens: [
-        .text(value: "Hello World", at: .unknown)
-      ], environment: Environment())
+        let nodes = try parser.parse()
+        let node = nodes.first as? TextNode
 
-      let nodes = try parser.parse()
-      let node = nodes.first as? TextNode
-
-      try expect(nodes.count) == 1
-      try expect(node?.text) == "Hello World"
-    }
-
-    $0.it("can parse a variable token") {
-      let parser = TokenParser(tokens: [
-        .variable(value: "'name'", at: .unknown)
-      ], environment: Environment())
-
-      let nodes = try parser.parse()
-      let node = nodes.first as? VariableNode
-      try expect(nodes.count) == 1
-      let result = try node?.render(Context())
-      try expect(result) == "name"
-    }
-
-    $0.it("can parse a comment token") {
-      let parser = TokenParser(tokens: [
-        .comment(value: "Secret stuff!", at: .unknown)
-      ], environment: Environment())
-
-      let nodes = try parser.parse()
-      try expect(nodes.count) == 0
-    }
-
-    $0.it("can parse a tag token") {
-      let simpleExtension = Extension()
-      simpleExtension.registerSimpleTag("known") { _ in
-        return ""
+        try expect(nodes.count) == 1
+        try expect(node?.text) == "Hello World"
       }
 
-      let parser = TokenParser(tokens: [
-        .block(value: "known", at: .unknown),
-      ], environment: Environment(extensions: [simpleExtension]))
+      $0.it("can parse a variable token") {
+        let parser = TokenParser(tokens: [
+          .variable(value: "'name'", at: .unknown)
+          ], environment: Environment())
 
-      let nodes = try parser.parse()
-      try expect(nodes.count) == 1
-    }
+        let nodes = try parser.parse()
+        let node = nodes.first as? VariableNode
+        try expect(nodes.count) == 1
+        let result = try node?.render(Context())
+        try expect(result) == "name"
+      }
 
-    $0.it("errors when parsing an unknown tag") {
-      let tokens: [Token] = [.block(value: "unknown", at: .unknown)]
-      let parser = TokenParser(tokens: tokens, environment: Environment())
+      $0.it("can parse a comment token") {
+        let parser = TokenParser(tokens: [
+          .comment(value: "Secret stuff!", at: .unknown)
+          ], environment: Environment())
 
-      try expect(try parser.parse()).toThrow(TemplateSyntaxError(reason: "Unknown template tag 'unknown'", token: tokens.first))
+        let nodes = try parser.parse()
+        try expect(nodes.count) == 0
+      }
+
+      $0.it("can parse a tag token") {
+        let simpleExtension = Extension()
+        simpleExtension.registerSimpleTag("known") { _ in
+          return ""
+        }
+
+        let parser = TokenParser(tokens: [
+          .block(value: "known", at: .unknown),
+          ], environment: Environment(extensions: [simpleExtension]))
+
+        let nodes = try parser.parse()
+        try expect(nodes.count) == 1
+      }
+
+      $0.it("errors when parsing an unknown tag") {
+        let tokens: [Token] = [.block(value: "unknown", at: .unknown)]
+        let parser = TokenParser(tokens: tokens, environment: Environment())
+
+        try expect(try parser.parse()).toThrow(TemplateSyntaxError(reason: "Unknown template tag 'unknown'", token: tokens.first))
+      }
     }
   }
 }