Test openapi schema response of FindArticles

src/test/kotlin/integration/Article routes.kt

@@ -14,6 +14,7 @@ import integration.steps.given.`Given I have articles`
 import integration.steps.given.`Given I have citizen`
 import integration.steps.given.`Given I have workgroup`
 import integration.steps.given.`authenticated as`
+import integration.steps.then.`And schema must be valid`
 import integration.steps.then.`And the response should contain list`
 import integration.steps.then.`And the response should not contain`
 import io.ktor.http.HttpStatusCode.Companion.OK
@@ -36,6 +37,7 @@ class `Article routes` : BaseTest() {
                 `And the response should contain pattern`("$.result[2].created_by.name.first_name", "firstName.+")
                 `And the response should not contain`("$.result[3]")
                 `And the response should contain list`("$.result", 3, 3)
+                `And schema must be valid`()
             }
         }
     }

src/test/kotlin/integration/steps/then/schema.kt

@@ -0,0 +1,45 @@
+package integration.steps.then
+
+import com.fasterxml.jackson.databind.JsonNode
+import com.fasterxml.jackson.databind.ObjectMapper
+import fr.dcproject.common.utils.getResource
+import io.ktor.request.contentType
+import io.ktor.request.httpMethod
+import io.ktor.request.uri
+import io.ktor.server.testing.TestApplicationResponse
+import org.openapi4j.core.model.v3.OAI3
+import org.openapi4j.parser.OpenApi3Parser
+import org.openapi4j.parser.model.v3.OpenApi3
+import org.openapi4j.parser.model.v3.Schema
+import org.openapi4j.schema.validator.ValidationContext
+import org.openapi4j.schema.validator.ValidationData
+import org.openapi4j.schema.validator.v3.SchemaValidator
+import java.io.File
+import kotlin.test.assertTrue
+
+fun TestApplicationResponse.`And schema must be valid`() {
+    // Parse without validation, setting to true is strongly recommended for further data validation.
+    val api: OpenApi3 = OpenApi3Parser().parse(File("/openapi2.yaml".getResource().toURI()), true)
+
+    val mediaType = this.call.request.contentType()
+    val operation = this.call.request.httpMethod
+    val uri = this.call.request.uri
+    val status = this.call.response.status()
+
+    val schema: Schema = api
+        .getPath(uri)
+        .getOperation(operation.value.toLowerCase())
+        .getResponse(status?.value?.toString() ?: error("HttpStatus not found"))
+        .getContentMediaType(mediaType.toString())
+        .schema
+
+    val validationContext: ValidationContext<OAI3> = ValidationContext(api.context)
+    val jsonNode: JsonNode = schema.toNode()
+    val schemaValidator = SchemaValidator(validationContext, "", jsonNode)
+
+    val mapper = ObjectMapper()
+    val results = ValidationData<Unit>()
+    schemaValidator.validate(mapper.readTree(content), results)
+
+    assertTrue(results.isValid, results.results().toString())
+}