Add Create validation

Sources/CrudAPI/Controllers/CrudController.swift

@@ -16,7 +16,9 @@ struct CrudController<T: Model & Content & Publicable>: CrudControllerProtocol w
 
 extension CrudController where T: Createable {
     func create(req: Request) throws -> EventLoopFuture<T.Public> {
-        // Validation
+        if let validatable = T.Create.self as? Validatable.Type {
+            try validatable.validate(req)
+        }
         let data = try req.content.decode(T.Create.self)
         return create(from: data, on: req.db).public()
     }

Tests/CrudAPITests/CrudTests/CreateTests.swift

@@ -31,7 +31,7 @@ final class CreateTests: ApplicationXCTestCase {
         }
     }
     
-    func testCreateWithInvalidData() throws {
+    func testCreateWithoutData() throws {
         struct Empty: Content {}
 
         try routes()
@@ -47,9 +47,28 @@ final class CreateTests: ApplicationXCTestCase {
             XCTAssertNotEqual(res.status, .ok)
         }
     }
+    
+    func testCreateWithInvalidData() throws {
+        struct Empty: Content {}
+
+        try routes()
+        
+        try app.test(.GET, "/todos/1") { res in
+            XCTAssertEqual(res.status, .notFound)
+            XCTAssertNotEqual(res.status, .ok)
+        }.test(.POST, "/todos", json: Todo(title: "Sh")) { res in
+            XCTAssertEqual(res.status, .badRequest)
+            XCTAssertContains(res.body.string, "title is less than minimum of 3 character(s)")
+            XCTAssertNotEqual(res.status, .ok)
+        }.test(.GET, "/todos/1") { res in
+            XCTAssertEqual(res.status, .notFound)
+            XCTAssertNotEqual(res.status, .ok)
+        }
+    }
 
     static var allTests = [
         ("testCreateWithValidData", testCreateWithValidData),
+        ("testCreateWithoutData", testCreateWithoutData),
         ("testCreateWithInvalidData", testCreateWithInvalidData),
     ]
 }

Tests/CrudAPITests/Models/Todo.swift

@@ -43,6 +43,12 @@ extension Todo: Createable {
     }
 }
 
+extension Todo.Create: Validatable {
+    static func validations(_ validations: inout Validations) {
+        validations.add("title", as: String.self, is: .count(3...))
+    }
+}
+
 extension Todo {
     struct migration: Migration {
         var name = "TodoMigration"