ensure we do not parse email strings permissively

e.g. we do not accept the entire "From" line from an email, nor two
comma-separated email addresses

Author: karenetheridge

tests/draft-next/optional/format/email.json

@@ -115,6 +115,16 @@
                 "description": "an invalid IPv4-address-literal",
                 "data": "joe.bloggs@[127.0.0.300]",
                 "valid": false
+            },
+            {
+                "description": "two email addresses is not valid",
+                "data": "user1@oceania.org, user2@oceania.org",
+                "valid": false
+            },
+            {
+                "description": "full \"From\" header is invalid",
+                "data": "\"Winston Smith\" <winston.smith@recdep.minitrue> (Records Department)",
+                "valid": false
             }
         ]
     }

tests/draft2019-09/optional/format/email.json

@@ -80,6 +80,16 @@
                 "description": "two subsequent dots inside local part are not valid",
                 "data": "te..st@example.com",
                 "valid": false
+            },
+            {
+                "description": "two email addresses is not valid",
+                "data": "user1@oceania.org, user2@oceania.org",
+                "valid": false
+            },
+            {
+                "description": "full \"From\" header is invalid",
+                "data": "\"Winston Smith\" <winston.smith@recdep.minitrue> (Records Department)",
+                "valid": false
             }
         ]
     }

tests/draft2020-12/optional/format/email.json

@@ -115,6 +115,16 @@
                 "description": "an invalid IPv4-address-literal",
                 "data": "joe.bloggs@[127.0.0.300]",
                 "valid": false
+            },
+            {
+                "description": "two email addresses is not valid",
+                "data": "user1@oceania.org, user2@oceania.org",
+                "valid": false
+            },
+            {
+                "description": "full \"From\" header is invalid",
+                "data": "\"Winston Smith\" <winston.smith@recdep.minitrue> (Records Department)",
+                "valid": false
             }
         ]
     }

tests/draft3/optional/format/email.json

@@ -47,6 +47,16 @@
                 "description": "two subsequent dots inside local part are not valid",
                 "data": "te..st@example.com",
                 "valid": false
+            },
+            {
+                "description": "two email addresses is not valid",
+                "data": "user1@oceania.org, user2@oceania.org",
+                "valid": false
+            },
+            {
+                "description": "full \"From\" header is invalid",
+                "data": "\"Winston Smith\" <winston.smith@recdep.minitrue> (Records Department)",
+                "valid": false
             }
         ]
     }

tests/draft4/optional/format/email.json

@@ -77,6 +77,16 @@
                 "description": "two subsequent dots inside local part are not valid",
                 "data": "te..st@example.com",
                 "valid": false
+            },
+            {
+                "description": "two email addresses is not valid",
+                "data": "user1@oceania.org, user2@oceania.org",
+                "valid": false
+            },
+            {
+                "description": "full \"From\" header is invalid",
+                "data": "\"Winston Smith\" <winston.smith@recdep.minitrue> (Records Department)",
+                "valid": false
             }
         ]
     }

tests/draft6/optional/format/email.json

@@ -77,6 +77,16 @@
                 "description": "two subsequent dots inside local part are not valid",
                 "data": "te..st@example.com",
                 "valid": false
+            },
+            {
+                "description": "two email addresses is not valid",
+                "data": "user1@oceania.org, user2@oceania.org",
+                "valid": false
+            },
+            {
+                "description": "full \"From\" header is invalid",
+                "data": "\"Winston Smith\" <winston.smith@recdep.minitrue> (Records Department)",
+                "valid": false
             }
         ]
     }

tests/draft7/optional/format/email.json

@@ -77,6 +77,16 @@
                 "description": "two subsequent dots inside local part are not valid",
                 "data": "te..st@example.com",
                 "valid": false
+            },
+            {
+                "description": "two email addresses is not valid",
+                "data": "user1@oceania.org, user2@oceania.org",
+                "valid": false
+            },
+            {
+                "description": "full \"From\" header is invalid",
+                "data": "\"Winston Smith\" <winston.smith@recdep.minitrue> (Records Department)",
+                "valid": false
             }
         ]
     }