Merge pull request diffblue#564 from diffblue/bugfix/block

Fix bugs in Block

Author: smowton

env-model-generator/src/javaCode.ts

@@ -253,7 +253,7 @@ class Braces extends CodeElement {
 
   public flatten(): string[] {
     return [
-      this.intro + " {",
+      this.intro ? this.intro + " {" : "{",
       ..._.flatMap(this.body, (block) => block.flatten()).map(indent),
       "}",
     ];
@@ -262,6 +262,10 @@ class Braces extends CodeElement {
 
 export class Block extends Braces implements Statement {
   public isStatement: true = true;
+
+  public constructor(body: Statement[]) {
+    super("", body);
+  }
 }
 
 export class Method extends Braces implements Member {