1 | /**
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2 | * @license
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3 | * Copyright 2020 Google LLC. All Rights Reserved.
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4 | * Licensed under the Apache License, Version 2.0 (the "License");
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5 | * you may not use this file except in compliance with the License.
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6 | * You may obtain a copy of the License at
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7 | *
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8 | * http://www.apache.org/licenses/LICENSE-2.0
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9 | *
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10 | * Unless required by applicable law or agreed to in writing, software
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11 | * distributed under the License is distributed on an "AS IS" BASIS,
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12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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13 | * See the License for the specific language governing permissions and
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14 | * limitations under the License.
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15 | * =============================================================================
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16 | */
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17 | import * as tf from '../index';
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18 | import { ALL_ENVS, describeWithFlags } from '../jasmine_util';
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19 | import { expectArraysClose } from '../test_util';
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20 | describeWithFlags('stack', ALL_ENVS, () => {
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21 | it('scalars 3, 5 and 7', async () => {
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22 | const a = tf.scalar(3);
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23 | const b = tf.scalar(5);
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24 | const c = tf.scalar(7);
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25 | const res = tf.stack([a, b, c]);
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26 | expect(res.shape).toEqual([3]);
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27 | expectArraysClose(await res.data(), [3, 5, 7]);
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28 | });
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29 | it('scalars 3, 5 and 7 along axis=1 throws error', () => {
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30 | const a = tf.scalar(3);
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31 | const b = tf.scalar(5);
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32 | const c = tf.scalar(7);
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33 | const f = () => tf.stack([a, b, c], 1);
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34 | expect(f).toThrowError();
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35 | });
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36 | it('non matching shapes throws error', () => {
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37 | const a = tf.scalar(3);
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38 | const b = tf.tensor1d([5]);
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39 | const f = () => tf.stack([a, b]);
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40 | expect(f).toThrowError();
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41 | });
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42 | it('non matching dtypes throws error', () => {
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43 | const a = tf.scalar(3);
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44 | const b = tf.scalar(5, 'bool');
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45 | const f = () => tf.stack([a, b]);
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46 | expect(f).toThrowError();
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47 | });
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48 | it('2d but axis=3 throws error', () => {
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49 | const a = tf.zeros([2, 2]);
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50 | const b = tf.zeros([2, 2]);
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51 | const f = () => tf.stack([a, b], 3 /* axis */);
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52 | expect(f).toThrowError();
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53 | });
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54 | it('[1,2], [3,4] and [5,6], axis=0', async () => {
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55 | const a = tf.tensor1d([1, 2]);
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56 | const b = tf.tensor1d([3, 4]);
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57 | const c = tf.tensor1d([5, 6]);
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58 | const res = tf.stack([a, b, c], 0 /* axis */);
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59 | expect(res.shape).toEqual([3, 2]);
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60 | expectArraysClose(await res.data(), [1, 2, 3, 4, 5, 6]);
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61 | });
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62 | it('[1,2], [3,4] and [5,6], axis=1', async () => {
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63 | const a = tf.tensor1d([1, 2]);
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64 | const b = tf.tensor1d([3, 4]);
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65 | const c = tf.tensor1d([5, 6]);
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66 | const res = tf.stack([a, b, c], 1 /* axis */);
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67 | expect(res.shape).toEqual([2, 3]);
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68 | expectArraysClose(await res.data(), [1, 3, 5, 2, 4, 6]);
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69 | });
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70 | it('[[1,2],[3,4]] and [[5, 6], [7, 8]], axis=0', async () => {
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71 | const a = tf.tensor2d([[1, 2], [3, 4]]);
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72 | const b = tf.tensor2d([[5, 6], [7, 8]]);
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73 | const res = tf.stack([a, b], 0 /* axis */);
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74 | expect(res.shape).toEqual([2, 2, 2]);
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75 | expectArraysClose(await res.data(), [1, 2, 3, 4, 5, 6, 7, 8]);
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76 | });
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77 | it('[[1,2],[3,4]] and [[5, 6], [7, 8]], axis=2', async () => {
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78 | const a = tf.tensor2d([[1, 2], [3, 4]]);
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79 | const b = tf.tensor2d([[5, 6], [7, 8]]);
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80 | const c = tf.tensor2d([[9, 10], [11, 12]]);
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81 | const res = tf.stack([a, b, c], 2 /* axis */);
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82 | expect(res.shape).toEqual([2, 2, 3]);
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83 | expectArraysClose(await res.data(), [1, 5, 9, 2, 6, 10, 3, 7, 11, 4, 8, 12]);
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84 | });
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85 | it('single tensor', async () => {
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86 | const a = tf.tensor2d([[1, 2], [3, 4]]);
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87 | const res = tf.stack([a], 2 /* axis */);
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88 | expect(res.shape).toEqual([2, 2, 1]);
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89 | expectArraysClose(await res.data(), [1, 2, 3, 4]);
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90 | });
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91 | it('throws when passed a non-tensor', () => {
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92 | expect(() => tf.stack([{}]))
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93 | .toThrowError(/Argument 'tensors\[0\]' passed to 'stack' must be a Tensor/);
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94 | });
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95 | it('accepts a tensor-like object', async () => {
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96 | const a = [[1, 2], [3, 4]];
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97 | const res = tf.stack([a], 2 /* axis */);
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98 | expect(res.shape).toEqual([2, 2, 1]);
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99 | expectArraysClose(await res.data(), [1, 2, 3, 4]);
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100 | });
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101 | it('accepts string.', async () => {
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102 | const a = tf.scalar('three', 'string');
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103 | const b = tf.scalar('five', 'string');
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104 | const c = tf.scalar('seven', 'string');
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105 | const res = tf.stack([a, b, c]);
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106 | expect(res.shape).toEqual([3]);
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107 | expectArraysClose(await res.data(), ['three', 'five', 'seven']);
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108 | });
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109 | it('chain api', async () => {
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110 | const a = tf.tensor([1, 2]);
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111 | const res = a.stack(tf.tensor([3, 4]));
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112 | expect(res.shape).toEqual([2, 2]);
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113 | expectArraysClose(await res.data(), [1, 2, 3, 4]);
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114 | });
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115 | });
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116 | //# 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* @license\n * Copyright 2020 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('stack', ALL_ENVS, () => {\n  it('scalars 3, 5 and 7', async () => {\n    const a = tf.scalar(3);\n    const b = tf.scalar(5);\n    const c = tf.scalar(7);\n    const res = tf.stack([a, b, c]);\n    expect(res.shape).toEqual([3]);\n    expectArraysClose(await res.data(), [3, 5, 7]);\n  });\n\n  it('scalars 3, 5 and 7 along axis=1 throws error', () => {\n    const a = tf.scalar(3);\n    const b = tf.scalar(5);\n    const c = tf.scalar(7);\n    const f = () => tf.stack([a, b, c], 1);\n    expect(f).toThrowError();\n  });\n\n  it('non matching shapes throws error', () => {\n    const a = tf.scalar(3);\n    const b = tf.tensor1d([5]);\n    const f = () => tf.stack([a, b]);\n    expect(f).toThrowError();\n  });\n\n  it('non matching dtypes throws error', () => {\n    const a = tf.scalar(3);\n    const b = tf.scalar(5, 'bool');\n    const f = () => tf.stack([a, b]);\n    expect(f).toThrowError();\n  });\n\n  it('2d but axis=3 throws error', () => {\n    const a = tf.zeros([2, 2]);\n    const b = tf.zeros([2, 2]);\n    const f = () => tf.stack([a, b], 3 /* axis */);\n    expect(f).toThrowError();\n  });\n\n  it('[1,2], [3,4] and [5,6], axis=0', async () => {\n    const a = tf.tensor1d([1, 2]);\n    const b = tf.tensor1d([3, 4]);\n    const c = tf.tensor1d([5, 6]);\n    const res = tf.stack([a, b, c], 0 /* axis */);\n    expect(res.shape).toEqual([3, 2]);\n    expectArraysClose(await res.data(), [1, 2, 3, 4, 5, 6]);\n  });\n\n  it('[1,2], [3,4] and [5,6], axis=1', async () => {\n    const a = tf.tensor1d([1, 2]);\n    const b = tf.tensor1d([3, 4]);\n    const c = tf.tensor1d([5, 6]);\n    const res = tf.stack([a, b, c], 1 /* axis */);\n    expect(res.shape).toEqual([2, 3]);\n    expectArraysClose(await res.data(), [1, 3, 5, 2, 4, 6]);\n  });\n\n  it('[[1,2],[3,4]] and [[5, 6], [7, 8]], axis=0', async () => {\n    const a = tf.tensor2d([[1, 2], [3, 4]]);\n    const b = tf.tensor2d([[5, 6], [7, 8]]);\n    const res = tf.stack([a, b], 0 /* axis */);\n    expect(res.shape).toEqual([2, 2, 2]);\n    expectArraysClose(await res.data(), [1, 2, 3, 4, 5, 6, 7, 8]);\n  });\n\n  it('[[1,2],[3,4]] and [[5, 6], [7, 8]], axis=2', async () => {\n    const a = tf.tensor2d([[1, 2], [3, 4]]);\n    const b = tf.tensor2d([[5, 6], [7, 8]]);\n    const c = tf.tensor2d([[9, 10], [11, 12]]);\n    const res = tf.stack([a, b, c], 2 /* axis */);\n    expect(res.shape).toEqual([2, 2, 3]);\n    expectArraysClose(\n        await res.data(), [1, 5, 9, 2, 6, 10, 3, 7, 11, 4, 8, 12]);\n  });\n\n  it('single tensor', async () => {\n    const a = tf.tensor2d([[1, 2], [3, 4]]);\n    const res = tf.stack([a], 2 /* axis */);\n    expect(res.shape).toEqual([2, 2, 1]);\n    expectArraysClose(await res.data(), [1, 2, 3, 4]);\n  });\n\n  it('throws when passed a non-tensor', () => {\n    expect(() => tf.stack([{} as tf.Tensor]))\n        .toThrowError(\n            /Argument 'tensors\\[0\\]' passed to 'stack' must be a Tensor/);\n  });\n\n  it('accepts a tensor-like object', async () => {\n    const a = [[1, 2], [3, 4]];\n    const res = tf.stack([a], 2 /* axis */);\n    expect(res.shape).toEqual([2, 2, 1]);\n    expectArraysClose(await res.data(), [1, 2, 3, 4]);\n  });\n\n  it('accepts string.', async () => {\n    const a = tf.scalar('three', 'string');\n    const b = tf.scalar('five', 'string');\n    const c = tf.scalar('seven', 'string');\n    const res = tf.stack([a, b, c]);\n    expect(res.shape).toEqual([3]);\n    expectArraysClose(await res.data(), ['three', 'five', 'seven']);\n  });\n\n  it('chain api', async () => {\n    const a = tf.tensor([1, 2]);\n    const res = a.stack(tf.tensor([3, 4]));\n    expect(res.shape).toEqual([2, 2]);\n    expectArraysClose(await res.data(), [1, 2, 3, 4]);\n  });\n});\n"]} |
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