Merge pull request #39 from GuentherJulian/feature/assertionDirectoryNotEmpty

WIP: assertion directoryNotEmpty

Author: maybeec

assertions/directoryNotEmpty.ts

@@ -0,0 +1,9 @@
+import * as fs from "fs";
+
+export class DirectoryNotEmpty {
+    public static run(directory: string): void {
+        if(fs.readdirSync(directory).length == 0) {
+            throw new Error("directory " + directory + " is empty");
+        }
+    }
+}

assertions/index.ts

@@ -5,6 +5,7 @@ import { NoErrorCode } from "./noErrorCode";
 import { NoException } from "./noException";
 import { DirectoryExist } from "./directoryExist";
 import { FileExist } from "./fileExist";
+import { DirectoryNotEmpty } from "./directoryNotEmpty";
 
 
 export class Assertions {
@@ -24,6 +25,11 @@ export class Assertions {
         return this;
     }
 
+    public directoryNotEmpty(directory: string): Assertions {
+        DirectoryNotEmpty.run(directory);
+        return this;
+    }
+
     public fileExits(filepath: string): Assertions {
         FileExist.run(filepath);
         return this;