[RaphaelFakhri]

Related Issue: #311

Type of change:

• Bug fix (non-breaking change which fixes an issue)

Description:

JSONFormat.write_data only JSON-encodes dict data. Other JSON values, such as lists and booleans, fall through to str(data). Binary content mode then sends Python reprs like ['a', 'b'] or True as the body, even with datacontenttype: application/json. This affects the HTTP, Kafka, AMQP and RabbitMQ bindings.

This change applies the existing JSON handling to every value that isn't None, str or bytes. It keeps the current behavior otherwise:

• JSON content types (or no content type) always serialize as JSON.
• Other content types try JSON first and fall back to str(data) on TypeError, as added in fix: improve json handling on wrong or missing contenttype #297.

Tests: test_write_data_non_dict_json_value covers a list, a boolean and a float with no content type, application/json and application/octet-stream. Without the fix, the list and boolean cases fail.

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• I have read the CONTRIBUTING.md file.
• I have signed off my commits using git commit --signoff.
• I have added tests that prove my fix is effective or that my feature works.
• I have updated the documentation (README.md, CHANGELOG.md, etc.) as necessary.
• I have run pre-commit and tox and all checks pass.
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