README

Validate Laravel JSON responses against JSON Schemas.

This package leverages Opis JSON Schema for schema validation and provides convenient methods for validating API responses in Laravel applications.

Installation

Install the package via Composer:

composer require --dev jtmcc/lara-schema-validation

Usage

PHPUnit Example

You can use the SchemaValidator class to validate JSON responses against a schema file:

use JTMcC\LaraSchemaValidation\SchemaValidator;

public function testIndexValidation()
{
    // Act
    $response = $this->getJson(route('api.posts.index'));

    // Assert
    SchemaValidator::validateResponseCollection($response, 'post.json');
}

public function testShowValidation()
{
    // Act
    $response = $this->getJson(route('api.posts.show', 1));

    // Assert
    SchemaValidator::validateResponse($response, 'post.json');
}

Pest Example

This package extends Pest with custom expectations for schema validation:

test('it validates schema', function () {
    $response = $this->getJson(route('api.posts.show', 1));

    expect($response)->toMatchSchema('post.json');
});

test('it validates schema collection', function () {
    $response = $this->getJson(route('api.posts.index'));

    expect($response)->toMatchSchemaCollection('post.json');
});

Schema Files

Place your JSON schema files in the tests/schemas directory. For example: tests/schemas/post.json.

{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "type": "object",
  "title": "Post",
  "properties": {
    "id": {
      "type": "integer",
      "description": "Primary ID of the post"
    },
    "uuid": {
      "type": "string",
      "format": "uuid",
      "description": "Unique identifier for the post"
    },  
    "slug": {
      "type": "string",
      "description": "URL-friendly identifier for the post"
    },
    "status": {
      "type": "string",
      "enum": ["draft", "published", "archived"],
      "description": "Status of the post"
    },
    "tags": {
      "type": "array",
      "items": {
        "type": "string"
      },
      "description": "Tags associated with the post"
    },
    "published_at": {
      "type": "string",
      "format": "date-time",
      "description": "Publication timestamp"
    },
    "created_at": {
      "type": "string",
      "format": "date-time",
      "description": "Creation timestamp"
    },
    "updated_at": {
      "type": "string",
      "format": "date-time",
      "description": "Last update timestamp"
    },
    "comments" : {
      "type": "array",
      "items": {
        "$ref": "comment.json"
      },
      "description": "Comments relations associated with the post"
    }
  },
  "required": ["id", "uuid", "slug", "status", "tags", "published_at", "created_at", "updated_at"]
}

Error Handling

When validation fails, an AssertionFailedError is thrown with detailed information about the validation errors.

Example error message:

JSON schema validation failed at /tests/Feature/SchemaValidatorTest.php:52

Schema: /tests/schemas/post.json

message: The properties must match schema: uuid, slug, status, tags, published_at, created_at, updated_at
keyword: properties
path: /
errors:
  0:
    message: The data must match the 'uuid' format
    keyword: format
    path: /uuid
  1:
    message: The data (null) must match the type: string
    keyword: type
    path: /slug
  2:
    message: The data should match one item from enum
    keyword: enum
    path: /status
  3:
    message: The data (string) must match the type: array
    keyword: type
    path: /tags
  4:
    message: The data must match the 'date-time' format
    keyword: format
    path: /published_at
  5:
    message: The data must match the 'date-time' format
    keyword: format
    path: /created_at
  6:
    message: The data must match the 'date-time' format
    keyword: format
    path: /updated_at

Credits

• Opis JSON Schema for the underlying validation library.

License

This package is open-sourced software licensed under the MIT license.