/**
 * @license
 * Copyright 2017 Google LLC. All Rights Reserved.
 * 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.
 * =============================================================================
 */
import * as tf from '../index';
import { ALL_ENVS, describeWithFlags } from '../jasmine_util';
import { expectArraysClose } from '../test_util';
describeWithFlags('movingAverage', ALL_ENVS, () => {
    // Use the following tensorflow to generate reference values for
    // `zeroDebias` = `true`;
    //
    // ```python
    // import tensorflow as tf
    // from tensorflow.python.training.moving_averages import
    // assign_moving_average
    //
    // with tf.Session() as sess:
    //   v = tf.get_variable("v1", shape=[2, 2], dtype=tf.float32,
    //                       initializer=tf.zeros_initializer)
    //   x = tf.Variable([[1.0, 2.0], [3.0, 4.0]])
    //   inc_x = x.assign_add([[10.0, 10.0], [10.0, 10.0]])
    //   update = assign_moving_average(v, x, 0.6)
    //
    //   sess.run(tf.global_variables_initializer())
    //
    //   sess.run(update)
    //   print(sess.run(v))
    //
    //   sess.run(inc_x)
    //   sess.run(update)
    //   print(sess.run(v))
    // ```
    it('zeroDebias=true, decay and step are numbers', async () => {
        const v0 = tf.tensor2d([[0, 0], [0, 0]], [2, 2]);
        const x = tf.tensor2d([[1, 2], [3, 4]], [2, 2]);
        const decay = 0.6;
        const v1 = tf.movingAverage(v0, x, decay, 1);
        expectArraysClose(await v1.array(), [[1, 2], [3, 4]]);
        const y = tf.tensor2d([[11, 12], [13, 14]], [2, 2]);
        const v2 = tf.movingAverage(v1, y, decay, 2);
        expectArraysClose(await v2.array(), [[7.25, 8.25], [9.25, 10.25]]);
    });
    it('zeroDebias=true, decay and step are scalars', async () => {
        const v0 = tf.tensor2d([[0, 0], [0, 0]], [2, 2]);
        const x = tf.tensor2d([[1, 2], [3, 4]], [2, 2]);
        const decay = tf.scalar(0.6);
        const v1 = tf.movingAverage(v0, x, decay, tf.scalar(1));
        expectArraysClose(await v1.array(), [[1, 2], [3, 4]]);
        const y = tf.tensor2d([[11, 12], [13, 14]], [2, 2]);
        const v2 = tf.movingAverage(v1, y, decay, tf.scalar(2));
        expectArraysClose(await v2.array(), [[7.25, 8.25], [9.25, 10.25]]);
    });
    // Use the following tensorflow to generate reference values for
    // `zeroDebias` = `false`;
    //
    // ```python
    // import tensorflow as tf
    // from tensorflow.python.training.moving_averages import
    // assign_moving_average
    //
    // with tf.Session() as sess:
    //   v = tf.get_variable("v1", shape=[2, 2], dtype=tf.float32,
    //                       initializer=tf.zeros_initializer)
    //   x = tf.Variable([[1.0, 2.0], [3.0, 4.0]])
    //   inc_x = x.assign_add([[10.0, 10.0], [10.0, 10.0]])
    //   update = assign_moving_average(v, x, 0.6, zero_debias=False)
    //
    //   sess.run(tf.global_variables_initializer())
    //
    //   sess.run(update)
    //   print(sess.run(v))
    //
    //   sess.run(inc_x)
    //   sess.run(update)
    //   print(sess.run(v))
    // ```
    it('zeroDebias=false, decay and step are numbers', async () => {
        const v0 = tf.tensor2d([[0, 0], [0, 0]], [2, 2]);
        const x = tf.tensor2d([[1, 2], [3, 4]], [2, 2]);
        const decay = 0.6;
        const v1 = tf.movingAverage(v0, x, decay, null, false);
        expectArraysClose(await v1.array(), [[0.4, 0.8], [1.2, 1.6]]);
        const y = tf.tensor2d([[11, 12], [13, 14]], [2, 2]);
        const v2 = tf.movingAverage(v1, y, decay, null, false);
        expectArraysClose(await v2.array(), [[4.64, 5.28], [5.92, 6.56]]);
    });
    it('zeroDebias=false, decay is scalar', async () => {
        const v0 = tf.tensor2d([[0, 0], [0, 0]], [2, 2]);
        const x = tf.tensor2d([[1, 2], [3, 4]], [2, 2]);
        const decay = tf.scalar(0.6);
        const v1 = tf.movingAverage(v0, x, decay, null, false);
        expectArraysClose(await v1.array(), [[0.4, 0.8], [1.2, 1.6]]);
        const y = tf.tensor2d([[11, 12], [13, 14]], [2, 2]);
        const v2 = tf.movingAverage(v1, y, decay, null, false);
        expectArraysClose(await v2.array(), [[4.64, 5.28], [5.92, 6.56]]);
    });
    it('zeroDebias=true, no step throws error', () => {
        const v0 = tf.tensor2d([[0, 0], [0, 0]], [2, 2]);
        const x = tf.tensor2d([[1, 2], [3, 4]], [2, 2]);
        const decay = tf.scalar(0.6);
        expect(() => tf.movingAverage(v0, x, decay, null)).toThrowError();
    });
    it('shape mismatch in v and x throws error', () => {
        const v0 = tf.tensor2d([[0, 0], [0, 0]], [2, 2]);
        const x = tf.tensor2d([[1, 2]], [1, 2]);
        const decay = tf.scalar(0.6);
        expect(() => tf.movingAverage(v0, x, decay, null)).toThrowError();
    });
    it('throws when passed v as a non-tensor', () => {
        const x = tf.tensor2d([[1, 2], [3, 4]], [2, 2]);
        expect(() => tf.movingAverage({}, x, 1))
            .toThrowError(/Argument 'v' passed to 'movingAverage' must be a Tensor/);
    });
    it('throws when passed v as a non-tensor', () => {
        const v = tf.tensor2d([[0, 0], [0, 0]], [2, 2]);
        expect(() => tf.movingAverage(v, {}, 1))
            .toThrowError(/Argument 'x' passed to 'movingAverage' must be a Tensor/);
    });
    it('accepts a tensor-like object', async () => {
        const v0 = [[0, 0], [0, 0]]; // 2x2
        const x = [[1, 2], [3, 4]]; // 2x2
        const decay = 0.6;
        const v1 = tf.movingAverage(v0, x, decay, 1);
        expectArraysClose(await v1.array(), [[1, 2], [3, 4]]);
    });
});
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* @license\n * Copyright 2017 Google LLC. All Rights Reserved.\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n * http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n * =============================================================================\n */\n\nimport * as tf from '../index';\nimport {ALL_ENVS, describeWithFlags} from '../jasmine_util';\nimport {expectArraysClose} from '../test_util';\n\ndescribeWithFlags('movingAverage', ALL_ENVS, () => {\n  // Use the following tensorflow to generate reference values for\n  // `zeroDebias` = `true`;\n  //\n  // ```python\n  // import tensorflow as tf\n  // from tensorflow.python.training.moving_averages import\n  // assign_moving_average\n  //\n  // with tf.Session() as sess:\n  //   v = tf.get_variable(\"v1\", shape=[2, 2], dtype=tf.float32,\n  //                       initializer=tf.zeros_initializer)\n  //   x = tf.Variable([[1.0, 2.0], [3.0, 4.0]])\n  //   inc_x = x.assign_add([[10.0, 10.0], [10.0, 10.0]])\n  //   update = assign_moving_average(v, x, 0.6)\n  //\n  //   sess.run(tf.global_variables_initializer())\n  //\n  //   sess.run(update)\n  //   print(sess.run(v))\n  //\n  //   sess.run(inc_x)\n  //   sess.run(update)\n  //   print(sess.run(v))\n  // ```\n\n  it('zeroDebias=true, decay and step are numbers', async () => {\n    const v0 = tf.tensor2d([[0, 0], [0, 0]], [2, 2]);\n    const x = tf.tensor2d([[1, 2], [3, 4]], [2, 2]);\n    const decay = 0.6;\n\n    const v1 = tf.movingAverage(v0, x, decay, 1);\n    expectArraysClose(await v1.array(), [[1, 2], [3, 4]]);\n\n    const y = tf.tensor2d([[11, 12], [13, 14]], [2, 2]);\n    const v2 = tf.movingAverage(v1, y, decay, 2);\n    expectArraysClose(await v2.array(), [[7.25, 8.25], [9.25, 10.25]]);\n  });\n\n  it('zeroDebias=true, decay and step are scalars', async () => {\n    const v0 = tf.tensor2d([[0, 0], [0, 0]], [2, 2]);\n    const x = tf.tensor2d([[1, 2], [3, 4]], [2, 2]);\n    const decay = tf.scalar(0.6);\n\n    const v1 = tf.movingAverage(v0, x, decay, tf.scalar(1));\n    expectArraysClose(await v1.array(), [[1, 2], [3, 4]]);\n\n    const y = tf.tensor2d([[11, 12], [13, 14]], [2, 2]);\n    const v2 = tf.movingAverage(v1, y, decay, tf.scalar(2));\n    expectArraysClose(await v2.array(), [[7.25, 8.25], [9.25, 10.25]]);\n  });\n\n  // Use the following tensorflow to generate reference values for\n  // `zeroDebias` = `false`;\n  //\n  // ```python\n  // import tensorflow as tf\n  // from tensorflow.python.training.moving_averages import\n  // assign_moving_average\n  //\n  // with tf.Session() as sess:\n  //   v = tf.get_variable(\"v1\", shape=[2, 2], dtype=tf.float32,\n  //                       initializer=tf.zeros_initializer)\n  //   x = tf.Variable([[1.0, 2.0], [3.0, 4.0]])\n  //   inc_x = x.assign_add([[10.0, 10.0], [10.0, 10.0]])\n  //   update = assign_moving_average(v, x, 0.6, zero_debias=False)\n  //\n  //   sess.run(tf.global_variables_initializer())\n  //\n  //   sess.run(update)\n  //   print(sess.run(v))\n  //\n  //   sess.run(inc_x)\n  //   sess.run(update)\n  //   print(sess.run(v))\n  // ```\n\n  it('zeroDebias=false, decay and step are numbers', async () => {\n    const v0 = tf.tensor2d([[0, 0], [0, 0]], [2, 2]);\n    const x = tf.tensor2d([[1, 2], [3, 4]], [2, 2]);\n    const decay = 0.6;\n\n    const v1 = tf.movingAverage(v0, x, decay, null, false);\n    expectArraysClose(await v1.array(), [[0.4, 0.8], [1.2, 1.6]]);\n\n    const y = tf.tensor2d([[11, 12], [13, 14]], [2, 2]);\n    const v2 = tf.movingAverage(v1, y, decay, null, false);\n    expectArraysClose(await v2.array(), [[4.64, 5.28], [5.92, 6.56]]);\n  });\n\n  it('zeroDebias=false, decay is scalar', async () => {\n    const v0 = tf.tensor2d([[0, 0], [0, 0]], [2, 2]);\n    const x = tf.tensor2d([[1, 2], [3, 4]], [2, 2]);\n    const decay = tf.scalar(0.6);\n\n    const v1 = tf.movingAverage(v0, x, decay, null, false);\n    expectArraysClose(await v1.array(), [[0.4, 0.8], [1.2, 1.6]]);\n\n    const y = tf.tensor2d([[11, 12], [13, 14]], [2, 2]);\n    const v2 = tf.movingAverage(v1, y, decay, null, false);\n    expectArraysClose(await v2.array(), [[4.64, 5.28], [5.92, 6.56]]);\n  });\n\n  it('zeroDebias=true, no step throws error', () => {\n    const v0 = tf.tensor2d([[0, 0], [0, 0]], [2, 2]);\n    const x = tf.tensor2d([[1, 2], [3, 4]], [2, 2]);\n    const decay = tf.scalar(0.6);\n\n    expect(() => tf.movingAverage(v0, x, decay, null)).toThrowError();\n  });\n\n  it('shape mismatch in v and x throws error', () => {\n    const v0 = tf.tensor2d([[0, 0], [0, 0]], [2, 2]);\n    const x = tf.tensor2d([[1, 2]], [1, 2]);\n    const decay = tf.scalar(0.6);\n\n    expect(() => tf.movingAverage(v0, x, decay, null)).toThrowError();\n  });\n\n  it('throws when passed v as a non-tensor', () => {\n    const x = tf.tensor2d([[1, 2], [3, 4]], [2, 2]);\n\n    expect(() => tf.movingAverage({} as tf.Tensor, x, 1))\n        .toThrowError(\n            /Argument 'v' passed to 'movingAverage' must be a Tensor/);\n  });\n  it('throws when passed v as a non-tensor', () => {\n    const v = tf.tensor2d([[0, 0], [0, 0]], [2, 2]);\n\n    expect(() => tf.movingAverage(v, {} as tf.Tensor, 1))\n        .toThrowError(\n            /Argument 'x' passed to 'movingAverage' must be a Tensor/);\n  });\n\n  it('accepts a tensor-like object', async () => {\n    const v0 = [[0, 0], [0, 0]];  // 2x2\n    const x = [[1, 2], [3, 4]];   // 2x2\n    const decay = 0.6;\n\n    const v1 = tf.movingAverage(v0, x, decay, 1);\n    expectArraysClose(await v1.array(), [[1, 2], [3, 4]]);\n  });\n});\n"]}