Added new test suites in emaail validation of the format.json file of the draft3 in test file along python enviroment variables.

Author: sahajsrivastava044-spec

.gitignore

@@ -158,3 +158,4 @@ cython_debug/
 #  and can be added to the global gitignore or merged into this file.  For a more nuclear
 #  option (not recommended) you can uncomment the following to ignore the entire idea folder.
 #.idea/
+sandbox

package-lock.json

@@ -8,5 +8,8 @@
     "tests"
   ],
   "author": "http://json-schema.org",
-  "license": "MIT"
+  "license": "MIT",
+  "dependencies": {
+    "jsonschema": "^1.5.0"
+  }
 }

package.json

@@ -32,6 +32,31 @@
                 "description": "all string formats ignore nulls",
                 "data": null,
                 "valid": true
+            },
+            {
+                "description": "User with double dot in email",
+                "data": "user@example..com",
+                "valid": false
+            },
+            {
+                "description": "User should use a specific domain",
+                "data": "user@",
+                "valid": false
+            },
+            {
+                "description": "Invalid email with space",
+                "data": "user name@example.com",
+                "valid": false
+            },
+            {
+                "description": "Invalid email with no spec interpretation",
+                "data": "user@localhost",
+                "valid": false
+            },
+            {
+                "description": "Invalid email with unwanted special symbols",
+                "data": "user//@example.com",
+                "valid": false
             }
         ]
     },
@@ -69,6 +94,7 @@
                 "data": null,
                 "valid": true
             }
+
         ]
     },
     {