feat(render): add bson protocol

[laurentcau]

Add bson protocol for body encoding/decoding

[laurentcau]

ping
@manucorporat
@javierprovecho

[appleboy]

// Copyright 2025 Gin Core Team. All rights reserved.
// Use of this source code is governed by a MIT style
// license that can be found in the LICENSE file.

[appleboy]

hi @laurentcau Please update the header.

[appleboy]

Please rebase the master branch.

[Copilot]

Pull Request Overview

This PR adds support for BSON encoding/decoding to the project, primarily by introducing new rendering and binding functionality along with corresponding tests.

• Adds BSON render implementation in the render package with associated tests.
• Extends context negotiation logic to support BSON responses.
• Provides BSON binding support in the binding package with tests and updates to go.mod.

Reviewed Changes

Copilot reviewed 9 out of 9 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
render/render_test.go	Added tests for BSON rendering.
render/bson.go	Introduces the BSON render logic for HTTP responses.
go.mod	Adds mongo-driver dependency.
context_test.go	Includes tests for BSON negotiation.
context.go	Adds MIMEBSON constant and BSON response method.
binding/bson.go	Implements BSON binding for request bodies.
binding/binding_test.go	Extends tests to cover BSON binding.
binding/binding.go	Updates binding mapping to include BSON.

[Copilot]

Pull Request Overview

This PR adds support for encoding/decoding BSON in the framework by introducing a new render type, updating content negotiation, and wiring BSON binding in the binding package.

• Added BSON render implementation and corresponding tests in render/render_test.go
• Updated context and binding files to include BSON handling for both response rendering and data binding
• Updated go.mod to include the mongo-driver dependency

Reviewed Changes

Copilot reviewed 9 out of 9 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
render/render_test.go	Added tests for BSON rendering
render/bson.go	Introduced BSON render type and content type writer
go.mod	Added mongo-driver dependency
context_test.go	Added test for context negotiation with BSON
context.go	Extended context with BSON support in Negotiate and helper
binding/bson.go	Introduced BSON binding implementation
binding/binding.go	Updated default binding to support BSON
binding/binding_test.go	Added BSON binding tests

Comments suppressed due to low confidence (1)

binding/binding_test.go:747

• In the negative test branch for BSON binding, the test uses JSON.Bind instead of the expected BSON binding. Consider using b.Bind(req, &obj) (or BSON.Bind(req, &obj)) to properly test error handling in the BSON binding implementation.

err = JSON.Bind(req, &obj)

[appleboy]

Testing fails.

[laurentcau]

Testing fails.

Error: ./context.go:40:34: undefined: binding.MIMEBSON
Error: ./context.go:1272:15: undefined: binding.MIMEBSON
It looks like "ubuntu-latest @ Go 1.23 -tags nomsgpack (pull_request)" doesn't use the right binding/binding.go file because MIMEBSON is defined:
MIMEBSON = "application/bson"

[appleboy]

@laurentcau Please update the latest code.

[appleboy]

The latest version is: v1.17.4

[appleboy]

Lint error.

[appleboy]

go mod tidy

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 98.82%. Comparing base (3dc1cd6) to head (901533d).
⚠️ Report is 190 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #4145      +/-   ##
==========================================
- Coverage   99.21%   98.82%   -0.39%     
==========================================
  Files          42       46       +4     
  Lines        3182     3492     +310     
==========================================
+ Hits         3157     3451     +294     
- Misses         17       30      +13     
- Partials        8       11       +3     

Flag	Coverage Δ
	?
--ldflags="-checklinkname=0" -tags sonic	98.81% <100.00%> (?)
-tags go_json	98.75% <100.00%> (?)
-tags nomsgpack	98.80% <100.00%> (?)
go-1.18	?
go-1.19	?
go-1.20	?
go-1.21	?
go-1.24	98.82% <100.00%> (?)
go-1.25	98.82% <100.00%> (?)
macos-latest	98.82% <100.00%> (-0.39%)	⬇️
ubuntu-latest	98.82% <100.00%> (-0.39%)	⬇️

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[appleboy]

@laurentcau Please help resolve the conflicts.

[appleboy]

@laurentcau, sorry, please help to upgrade Go mod files.