tools/android/webgpu/src/androidTest/java/androidx/webgpu/ObjectTest.kt

/*
 * Copyright 2025 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package androidx.webgpu

import androidx.test.ext.junit.runners.AndroidJUnit4
import androidx.test.filters.SmallTest
import androidx.webgpu.helper.initLibrary
import androidx.webgpu.GPU.createInstance
import org.junit.Test
import org.junit.runner.RunWith

@RunWith(AndroidJUnit4::class)
@SmallTest
class ObjectTest {
  init {
    initLibrary()
  }

  @Test
  fun sameObjectCompare() {
    val surface = createInstance().createSurface(
      GPUSurfaceDescriptor(
        surfaceSourceAndroidNativeWindow =
          GPUSurfaceSourceAndroidNativeWindow(0)
      )
    )

    val texture1 = surface.getCurrentTexture().texture

    val texture2 = surface.getCurrentTexture().texture

    assert(texture1 == texture2) {
      "== matches two Kotlin objects representing the same Dawn object"
    }

    assert(texture1.equals(texture2)) {
      ".equals() matches two Kotlin objects representing the same Dawn object"
    }
  }

  @Test
  fun differentObjectCompare() {
    val instance = createInstance()

    val surfaceDescriptor = GPUSurfaceDescriptor(
      surfaceSourceAndroidNativeWindow =
        GPUSurfaceSourceAndroidNativeWindow(0)
    )

    val surface1 = instance.createSurface(surfaceDescriptor)

    val surface2 = instance.createSurface(surfaceDescriptor)

    assert(!(surface1 == surface2)) {
      "== fails to match two Kotlin objects representing different Dawn objects"
    }

    assert(!surface1.equals(surface2)) {
      ".equals fails to match two Kotlin objects representing different Dawn objects"
    }
  }
}