[ark-physics-kit] tests: test physics component

ArkKitTests/ark-physics-kit-tests/PhysicsComponentTests.swift

@@ -0,0 +1,69 @@
+import XCTest
+import CoreGraphics
+@testable import ArkKit
+
+final class PhysicsComponentTests: XCTestCase {
+
+    func testInitializationWithCircle() {
+        let physicsComponent = PhysicsComponent(
+            shape: .circle,
+            radius: 10.0,
+            categoryBitMask: 1,
+            collisionBitMask: 2,
+            contactTestBitMask: 3
+        )
+
+        XCTAssertEqual(physicsComponent.shape, .circle)
+        XCTAssertEqual(physicsComponent.radius, 10.0)
+        XCTAssertNil(physicsComponent.size)
+        XCTAssertEqual(physicsComponent.categoryBitMask, 1)
+        XCTAssertEqual(physicsComponent.collisionBitMask, 2)
+        XCTAssertEqual(physicsComponent.contactTestBitMask, 3)
+    }
+
+    func testInitializationWithRectangle() {
+        let size = CGSize(width: 100.0, height: 50.0)
+        let physicsComponent = PhysicsComponent(
+            shape: .rectangle,
+            size: size,
+            categoryBitMask: 1,
+            collisionBitMask: 2,
+            contactTestBitMask: 3
+        )
+
+        XCTAssertEqual(physicsComponent.shape, .rectangle)
+        XCTAssertEqual(physicsComponent.size, size)
+        XCTAssertNil(physicsComponent.radius)
+    }
+
+    func testInitializationWithPolygon() {
+        let vertices = [CGPoint(x: 0.0, y: 0.0), CGPoint(x: 1.0, y: 1.0)]
+        let physicsComponent = PhysicsComponent(
+            shape: .polygon,
+            vertices: vertices,
+            categoryBitMask: 1,
+            collisionBitMask: 2,
+            contactTestBitMask: 3
+        )
+
+        XCTAssertEqual(physicsComponent.shape, .polygon)
+        XCTAssertEqual(physicsComponent.vertices, vertices)
+        XCTAssertNil(physicsComponent.radius)
+        XCTAssertNil(physicsComponent.size)
+    }
+
+    func testVelocityAndImpulse() {
+        var physicsComponent = PhysicsComponent(
+            shape: .circle,
+            categoryBitMask: 1,
+            collisionBitMask: 2,
+            contactTestBitMask: 3
+        )
+
+        let impulse = CGVector(dx: 10.0, dy: 15.0)
+        physicsComponent.impulse = impulse
+
+        XCTAssertEqual(physicsComponent.impulse, impulse)
+        XCTAssertEqual(physicsComponent.velocity, .zero)
+    }
+}