chore: update protocol tests (#3913)

Author: trivikr

.changes/next-release/feature-protocol-2b945450.json

@@ -0,0 +1,5 @@
+{
+  "type": "feature",
+  "category": "protocol",
+  "description": "Update protocol tests"
+}

test/fixtures/protocol/input/rest-json.json

@@ -1620,5 +1620,148 @@
         }
       }
     ]
+  },
+  {
+    "description": "Union trait",
+    "metadata": {
+      "protocol": "rest-json",
+      "apiVersion": "2014-01-01"
+    },
+    "shapes": {
+      "InputShape": {
+        "type": "structure",
+        "members": {
+          "OneOf": {"shape": "MyUnion"}
+        }
+      },
+      "MyUnion": {
+        "type": "structure",
+        "union": true,
+        "members": {
+          "a": {"shape": "StringType"},
+          "b": {"shape": "StringType"},
+          "c": {"shape": "Struct"},
+          "d": {"shape": "Struct"},
+          "e": {"shape": "ComplexList"}
+        }
+      },
+      "StringType": {
+        "type": "string"
+      },
+      "Struct": {
+        "type": "structure",
+        "members": {
+          "hello": {"shape": "StringType"}
+        }
+      },
+      "ComplexList": {
+        "type": "list",
+        "member": {"shape": "Struct"}
+      }
+    },
+    "cases": [
+      {
+        "given": {
+          "input": {
+            "shape": "InputShape"
+          },
+          "http": {
+            "method": "POST"
+          },
+          "name": "OperationName"
+        },
+        "params": {
+          "OneOf": {"a": "hi"}
+        },
+        "serialized": {
+          "uri": "/",
+          "body": "{\"OneOf\": {\"a\": \"hi\"}}"
+        }
+      },
+      {
+        "given": {
+          "input": {
+            "shape": "InputShape"
+          },
+          "http": {
+            "method": "POST"
+          },
+          "name": "OperationName"
+        },
+        "params": {
+          "OneOf": {"b": "hi"}
+        },
+        "serialized": {
+          "uri": "/",
+          "body": "{\"OneOf\": {\"b\": \"hi\"}}"
+        }
+      },
+      {
+        "given": {
+          "input": {
+            "shape": "InputShape"
+          },
+          "http": {
+            "method": "POST"
+          },
+          "name": "OperationName"
+        },
+        "params": {
+          "OneOf": {
+            "c": {
+              "hello": "hi"
+            }
+          }
+        },
+        "serialized": {
+          "uri": "/",
+          "body": "{\"OneOf\": {\"c\": {\"hello\": \"hi\"}}}"
+        }
+      },
+      {
+        "given": {
+          "input": {
+            "shape": "InputShape"
+          },
+          "http": {
+            "method": "POST"
+          },
+          "name": "OperationName"
+        },
+        "params": {
+          "OneOf": {
+            "d": {
+              "hello": "hi"
+            }
+          }
+        },
+        "serialized": {
+          "uri": "/",
+          "body": "{\"OneOf\": {\"d\": {\"hello\": \"hi\"}}}"
+        }
+      },
+      {
+        "given": {
+          "input": {
+            "shape": "InputShape"
+          },
+          "http": {
+            "method": "POST"
+          },
+          "name": "OperationName"
+        },
+        "params": {
+          "OneOf": {
+            "e": [
+              {"hello": "hi"}
+            ]
+          }
+        },
+        "serialized": {
+          "uri": "/",
+          "body": "{\"OneOf\": {\"e\": [{\"hello\": \"hi\"}]}}"
+        }
+      }
+    ]
   }
 ]

test/fixtures/protocol/output/ec2.json

@@ -567,5 +567,92 @@
         }
       }
     ]
+  },
+  {
+    "description": "Modeled exceptions",
+    "metadata": {
+      "protocol": "ec2"
+    },
+    "shapes": {
+      "ExceptionShape": {
+        "type": "structure",
+        "members": {
+          "Status": {
+            "shape": "StatusShape",
+            "location": "statusCode"
+          },
+          "BodyMember": {
+            "shape": "StringType"
+          },
+          "Message": {
+            "shape": "StringType"
+          }
+        }
+      },
+      "OtherExceptionShape": {
+        "BodyMember": {
+          "shape": "StringType"
+        }
+      },
+      "StatusShape": {
+        "type": "integer"
+      },
+      "StringType": {
+        "type": "string"
+      }
+    },
+    "cases": [
+      {
+        "given": {
+          "errors": [
+            {"shape": "ExceptionShape"}
+          ],
+          "name": "OperationName"
+        },
+        "error": {
+          "Status": 400,
+          "BodyMember": "mybody",
+          "Message": "mymessage"
+        },
+        "errorCode": "ExceptionShape",
+        "errorMessage": "mymessage",
+        "response": {
+          "status_code": 400,
+          "headers": {},
+          "body": "<Response><Errors><Error><Code>ExceptionShape</Code><Message>mymessage</Message><BodyMember>mybody</BodyMember></Error></Errors></Response>"
+        }
+      },
+      {
+        "given": {
+          "errors": [
+            {"shape": "ExceptionShape"}
+          ],
+          "name": "OperationName"
+        },
+        "error": {},
+        "errorCode": "OtherExceptionShape",
+        "errorMessage": "mymessage",
+        "response": {
+          "status_code": 400,
+          "headers": {},
+          "body": "<Response><Errors><Error><Code>OtherExceptionShape</Code><Message>mymessage</Message><BodyMember>mybody</BodyMember></Error></Errors></Response>"
+        }
+      },
+      {
+        "given": {
+          "errors": [
+            {"shape": "ExceptionShape"}
+          ],
+          "name": "OperationName"
+        },
+        "error": {},
+        "errorCode": "UndefinedShape",
+        "response": {
+          "status_code": 400,
+          "headers": {},
+          "body": "<Response><Errors><Error><Code>UndefinedShape</Code><BodyMember>mybody</BodyMember></Error></Errors></Response>"
+        }
+      }
+    ]
   }
 ]