Hi, I am trying to implement request/response proto matcher in golang for something similar mentioned below

message Request {
  string id = 1;
  map<string, string> device_headers = 2;
  map<string, string> params = 3;
  repeated break_duration_ms = 4; 
}

In my use case objects and arrays can be empty as well. I am not able to find some good resources/examples for the same in golang. cc: @Praful Poudel

What have you tried Saif?

until now i have used these proto matching

grpcInteraction := `{
		"pact:proto": "` + filepath.ToSlash(dir) + `",
		"pact:proto-service": "Calculate/Rectangle",
		"pact:content-type": "application/protobuf",
		"pact:protobuf-config": {
			"additionalIncludes": ["` + filepath.ToSlash(additionalDir) + `", "` + filepath.ToSlash(additionalDir2) + `"]
	  	},
		"request": {
			"id": "matching(type, '1')",
			"correlation_id": "matching(type, 'sdfsadghhhhhh')",
			"params": {},
			"protocol": "matching(type, 'dash')",
			"request_ctx": {
				"tenant_id": "matching(type, 'beam')",
				"client_ip": "matching(semver, '198.147.1.9')",
				"user_agent": "matching(type, 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/122.0.0.0 Safari/537.36')",
				"pre_play_req_timestamp": "matching(datetime, 'yyyy-MM-ddTHH:mm:ss.sssssssssZ', '2024-03-18T16:24:16.977359576Z')",
				"mode": "matching(type, 'MODE_XYZ')",
				"asset_id": "matching(type,'')"
			},
			"playlist_duration": "Like('2564s')",
			"timeout": "Like('4s')",
			"timestamp": "Like('2024-03-18T16:24:17.003265Z')"
      },
      ...
}`

but i am not sure how can i do the matching for something below object

"breaks": [
        {
            "id": "pre.1460231218",
            "break_id": "2341234-86f4-4955-8275-db76531ce378.0",
            "trackers": [
                {
                    "event": "breakEnd",
                    "url": "<http://ggooel.com|ggooel.com>"
                },
                ...
            ]
        },
        {
            "id": "cue_point--1843487036",
            "break_id": "cd1cefc0-86f4-4955-8275-db76531ce378.1",
            "duration_ms": 90089,
            "time_offset": 396000,
            "break_index": 1,
            "trackers": [
                {
                    "event": "breakStart",
                    "url": "<https://yahoo.com>"
                },
               ...
            ],
            "test_details": [
                {
                    "id": "314234-4360-11ee-971a-e6a552723314",
                    "duration_ms": 30030,
                    "creative_id": "48637382",
                    "manifest_creative_url": "c7d42618-3214-1432-a278-ac3d3a420054/0_32301f.mpd",
                    "xyz": {
                        "id": "3214324",
                        "title": "Placement 3",
                        "duration_ms": "30030",
                        "trackers": [
                            {
                                "event": "midpoint",
                                "url": "<http://test1.com|test1.com>"
                            },
                           ...
                        ],
                        "extensions": [
                            "[{\"type\":\"Test\",\"creativeParameters\":[{\"creativeId\":\"48123137382\",\"name\":\"test_reporting\",\"type\":\"Linear\",\"value\":\"advertiser_name:Test active advertiser;advertiser_id:1138148;1660676279606087178\"}]}]"
                        ],
                        "xyz_verifications": "[]",
                        "creative_type": "CREATIVE_TYPE",
                        "xyz_metadata": {
                            "xyz_id": "65182639",
                            "xyz_system": "ERWLJ"
                        },
                        "xyzpaid": {},
                        "error": [
                            "<http://test4.com|test4.com>"
                        ],
                        "xyz_ad_id": "413243242639.140527165835520"
                    },
                    "xyz_creative_id": "x/y/z.mp4",
                    "xyz_creative_uuid": "c7d42618-6558-512d-a278-ac3d3a420054",
                    "xyz_encode": {
                        "uri": "c7d42618-6558-512d-a278-ac3d3a420054/0_32301f.mpd",
                        "origin_id": "s1:avc-afs-media-us-east-1-dev"
                    }
                },
                ...
            ]
        }
    ],

as you will notice few of the keys is not present in further loop iteration

In contract testing, you wouldn’t test all of these combinations in one test. For each expected object type, you should have a separate test. (howtooptional)

See more on ☝️

Thanks, will check the doc.