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# Licensed under the Apache License, Version 2.0 (the "License");
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"""kmeans_test tests."""
from absl.testing import parameterized
import numpy as np
import tensorflow as tf, tf_keras

from official.projects.yolo.ops import kmeans_anchors


class KMeansTest(parameterized.TestCase, tf.test.TestCase):

  @parameterized.parameters((9, 3, 100))
  def test_kmeans(self, k, anchors_per_scale, samples):
    sample_list = []
    for _ in range(samples):
      boxes = tf.convert_to_tensor(np.random.uniform(0, 1, [k * 100, 4]))
      sample_list.append({
          "groundtruth_boxes": boxes,
          "width": 10,
          "height": 10
      })

    kmeans = kmeans_anchors.AnchorKMeans()
    cl = kmeans(
        sample_list, k, anchors_per_scale, image_resolution=[512, 512, 3])
    cl = tf.convert_to_tensor(cl)
    self.assertAllEqual(tf.shape(cl).numpy(), [k, 2])


if __name__ == "__main__":
  tf.test.main()
