Multipart validation

[vhmoura]

Hi,

How do we validate a request that contains a json body and multiform data (an image for example)?

I can't find any matcher for it.

Thanks, V

[StefH]

Currently there is no special logic to parse a multipart and match the parts. I'll need to think on this how to could be added and how this could be used.

[StefH]

@vhmoura I'm working on this, you can try a preview version 1.5.32-ci-17662.

(https://github.com/WireMock-Net/WireMock.Net/wiki/MyGet-preview-versions)

Use it like:

            var textPlainContentTypeMatcher = new ContentTypeMatcher("text/plain");
            var textPlainContentMatcher = new ExactMatcher("This is some plain text");
            var textPlainMatcher = new MimePartMatcher(MatchBehaviour.AcceptOnMatch, textPlainContentTypeMatcher, null, null, textPlainContentMatcher);

            var partTextJsonContentTypeMatcher = new ContentTypeMatcher("text/json");
            var partTextJsonContentMatcher = new JsonMatcher(new { Key = "Value" }, true);
            var partTextMatcher = new MimePartMatcher(MatchBehaviour.AcceptOnMatch, partTextJsonContentTypeMatcher, null, null, partTextJsonContentMatcher);

            var imagePngContentTypeMatcher = new ContentTypeMatcher("image/png");
            var imagePngContentDispositionMatcher = new ExactMatcher("attachment; filename=\"image.png\"");
            var imagePngContentTransferEncodingMatcher = new ExactMatcher("base64");
            var imagePngContentMatcher = new ExactObjectMatcher(Convert.FromBase64String("iVBORw0KGgoAAAANSUhEUgAAAAIAAAACAgMAAAAP2OW3AAAADFBMVEX/tID/vpH/pWX/sHidUyjlAAAADElEQVR4XmMQYNgAAADkAMHebX3mAAAAAElFTkSuQmCC"));
            var imagePngMatcher = new MimePartMatcher(MatchBehaviour.AcceptOnMatch, imagePngContentTypeMatcher, imagePngContentDispositionMatcher, imagePngContentTransferEncodingMatcher, imagePngContentMatcher);

            var matchers = new IMatcher[]
            {
                textPlainMatcher,
                partTextMatcher,
                imagePngMatcher
            };

            server
                .Given(Request.Create()
                    .WithPath("/multipart")
                    .UsingPost()
                    .WithMultiPart(matchers)
                )
                .WithGuid("b9c82182-e469-41da-bcaf-b6e3157fefdb")
                .RespondWith(Response.Create()
                    .WithBody("MultiPart is ok")
                );

Or in JSON:

{
    "Guid": "b9c82182-e469-41da-bcaf-b6e3157fefdb",
    "UpdatedAt": "2023-07-24T18:12:55.564978Z",
    "Request": {
        "Path": {
            "Matchers": [
                {
                    "Name": "WildcardMatcher",
                    "Pattern": "/multipart",
                    "IgnoreCase": false
                }
            ]
        },
        "Methods": [
            "POST"
        ],
        "Body": {
            "Matchers": [
                {
                    "ContentTypeMatcher": {
                        "Name": "ContentTypeMatcher",
                        "Pattern": "text/plain",
                        "IgnoreCase": false
                    },
                    "ContentMatcher": {
                        "Name": "ExactMatcher",
                        "Pattern": "This is some plain text",
                        "IgnoreCase": false
                    },
                    "Name": "MimePartMatcher"
                },
                {
                    "ContentTypeMatcher": {
                        "Name": "ContentTypeMatcher",
                        "Pattern": "text/json",
                        "IgnoreCase": false
                    },
                    "ContentMatcher": {
                        "Name": "JsonMatcher",
                        "Pattern": {
                            "Key": "Value"
                        },
                        "IgnoreCase": true
                    },
                    "Name": "MimePartMatcher"
                },
                {
                    "ContentTypeMatcher": {
                        "Name": "ContentTypeMatcher",
                        "Pattern": "image/png",
                        "IgnoreCase": true
                    },
                    "ContentDispositionMatcher": {
                        "Name": "ExactMatcher",
                        "Pattern": "attachment; filename=\"image.png\"",
                        "IgnoreCase": true
                    },
                    "ContentTransferEncodingMatcher": {
                        "Name": "ExactMatcher",
                        "Pattern": "base64",
                        "IgnoreCase": true
                    },
                    "ContentMatcher": {
                        "Name": "ExactObjectMatcher",
                        "Pattern": "iVBORw0KGgoAAAANSUhEUgAAAAIAAAACAgMAAAAP2OW3AAAADFBMVEX/tID/vpH/pWX/sHidUyjlAAAADElEQVR4XmMQYNgAAADkAMHebX3mAAAAAElFTkSuQmCC"
                    },
                    "Name": "MimePartMatcher"
                }
            ],
            "MatchOperator": "Or"
        }
    },
    "Response": {
        "BodyDestination": "SameAsSource",
        "Body": "MultiPart is ok"
    }
}

[StefH]

@vhmoura Did you have time to check that specific preview version?

[StefH]

@vhmoura Did you have time to check that specific preview version?

It would really help if you can try this version before I merge to this main and create a new official version.

[vhmoura]

Hi. I didn’t. Sorry I was quite busy making loads of tests but based on what you are showing looks ok to me.

[StefH]

https://github.com/WireMock-Net/WireMock.Net/pull/981