Fix to allow specifying restler_multipart_formdata directly in the grammar

[marina-p]

Using the following in the dictionary and grammar, with this change, restler_multipart_formdata can be used to send a file as the body of the corresponding
POST request:

    # Remove this next Content-Type line
    #primitives.restler_static_string("Content-Type: application/json\r\n"),
    primitives.restler_refreshable_authentication_token("authentication_token_tag"),
    primitives.restler_static_string("\r\n"), # Make sure this is here
    primitives.restler_multipart_formdata("file1"),
    primitives.restler_static_string("\r\n"),

Dictionary:

  "restler_multipart_formdata": {
    "file1": [
      {
        "content-disposition": "name=\"file1\"; filename=\"test0.txt\"",
        "datastream": "c:\\temp\\restler\\test0.txt"
      },
      {
          "content-disposition": "name=\"file2\"; filename=\"test1.txt\"",
          "datastream": "c:\\temp\\restler\\test1.txt"
      }
    ]
  }

[PatGod]

restler_mutipart_formdata does not seem to be documented anywhere in any of the .md file.

Could you please add this, or is this just some scaffolding and this doc will come in a future PR?

[ijard-akshay]

We did give a try using your branch with .zip file as multipart file as payload. But it is failing at 2 levels:

1. In your code branch for Restler-> Engine -> primitives.py:
   It is missing basepath implementation. It is throwing below error:
   Cannot import grammar: module 'engine.primitives' has no attribute 'restler_basepath'

2. Dictinary.json is throwing error similar to earlier found issue:

Cannot deserialize mutations dictionary: An exception occurred during deserialization: Newtonsoft.Json.JsonSerializationException: Could not find member 'restler_multipart_formdata' on object of type 'MutationsDictionary'. Path 'restler_multipart_formdata',

[Oleggg2000]

I have the save 2nd issue as @ijard-akshay
StdErr.txt of Compile folder:

Unhandled exception. System.ArgumentException: Could not read dictionary: ERROR: Cannot deserialize mutations dictionary. An exception occurred during deserialization: Newtonsoft.Json.JsonSerializationException: Could not find member 'restler_multipart_formdata' on object of type 'MutationsDictionary'. Path 'restler_multipart_formdata', line 33, position 33.
at Newtonsoft.Json.Serialization.JsonSerializerInternalReader.ResolvePropertyAndCreatorValues(JsonObjectContract contract, JsonProperty containerProperty, JsonReader reader, Type objectType)
at Newtonsoft.Json.Serialization.JsonSerializerInternalReader.CreateObjectUsingCreatorWithParameters(JsonReader reader, JsonObjectContract contract, JsonProperty containerProperty, ObjectConstructor`1 creator, String id)
at Newtonsoft.Json.Serialization.JsonSerializerInternalReader.CreateNewObject(JsonReader reader, JsonObjectContract objectContract, JsonProperty containerMember, JsonProperty containerProperty, String id, Boolean& createdFromNonDefaultCreator)
at Newtonsoft.Json.Serialization.JsonSerializerInternalReader.CreateObject(JsonReader reader, Type objectType, JsonContract contract, JsonProperty member, JsonContainerContract containerContract, JsonProperty containerMember, Object existingValue)
at Newtonsoft.Json.Serialization.JsonSerializerInternalReader.CreateValueInternal(JsonReader reader, Type objectType, JsonContract contract, JsonProperty member, JsonContainerContract containerContract, JsonProperty containerMember, Object existingValue)
at Newtonsoft.Json.Serialization.JsonSerializerInternalReader.Deserialize(JsonReader reader, Type objectType, Boolean checkAdditionalContent)
at Newtonsoft.Json.JsonSerializer.DeserializeInternal(JsonReader reader, Type objectType)
at Newtonsoft.Json.JsonSerializer.Deserialize(JsonReader reader, Type objectType)
at Newtonsoft.Json.JsonConvert.DeserializeObject(String value, Type type, JsonSerializerSettings settings)
at Newtonsoft.Json.JsonConvert.DeserializeObject[T](String value, JsonSerializerSettings settings)
at Restler.Dictionary.getDictionary$cont@225(String dictionaryFilePath, Unit unitVar) in D:\PKIS_Tests\restler-fuzzer\src\compiler\Restler.Compiler\Dictionary.fs:line 225
at Restler.Workflow.generateGrammarFromSwagger(String grammarOutputDirectoryPath, Config config) in D:\PKIS_Tests\restler-fuzzer\src\compiler\Restler.Compiler\Workflow.fs:line 98
at Restler.Workflow.generateRestlerGrammar(Config config) in D:\PKIS_Tests\restler-fuzzer\src\compiler\Restler.Compiler\Workflow.fs:line 250
at Program.main(String[] argv) in D:\PKIS_Tests\restler-fuzzer\src\compiler\Restler.CompilerExe\Program.fs:line 43