1 /* Copyright 2016 The TensorFlow Authors. All Rights Reserved. 2 3 Licensed under the Apache License, Version 2.0 (the "License"); 4 you may not use this file except in compliance with the License. 5 You may obtain a copy of the License at 6 7 http://www.apache.org/licenses/LICENSE-2.0 8 9 Unless required by applicable law or agreed to in writing, software 10 distributed under the License is distributed on an "AS IS" BASIS, 11 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 See the License for the specific language governing permissions and 13 limitations under the License. 14 ==============================================================================*/ 15 16 package org.tensorflow; 17 18 import static org.junit.Assert.assertEquals; 19 import static org.junit.Assert.assertNotEquals; 20 21 import org.junit.Test; 22 import org.junit.runner.RunWith; 23 import org.junit.runners.JUnit4; 24 25 /** Unit tests for {@link Shape}. */ 26 @RunWith(JUnit4.class) 27 public class ShapeTest { 28 29 @Test unknown()30 public void unknown() { 31 assertEquals(-1, Shape.unknown().numDimensions()); 32 assertEquals("<unknown>", Shape.unknown().toString()); 33 } 34 35 @Test scalar()36 public void scalar() { 37 assertEquals(0, Shape.scalar().numDimensions()); 38 assertEquals("[]", Shape.scalar().toString()); 39 } 40 41 @Test make()42 public void make() { 43 Shape s = Shape.make(2); 44 assertEquals(1, s.numDimensions()); 45 assertEquals(2, s.size(0)); 46 assertEquals("[2]", s.toString()); 47 48 s = Shape.make(2, 3); 49 assertEquals(2, s.numDimensions()); 50 assertEquals(2, s.size(0)); 51 assertEquals(3, s.size(1)); 52 assertEquals("[2, 3]", s.toString()); 53 54 s = Shape.make(-1, 2, 3); 55 assertEquals(3, s.numDimensions()); 56 assertEquals(-1, s.size(0)); 57 assertEquals(2, s.size(1)); 58 assertEquals(3, s.size(2)); 59 assertEquals("[?, 2, 3]", s.toString()); 60 } 61 62 @Test nodesInAGraph()63 public void nodesInAGraph() { 64 try (Graph g = new Graph()) { 65 Output<Float> n = TestUtil.placeholder(g, "feed", Float.class); 66 assertEquals(-1, n.shape().numDimensions()); 67 68 n = TestUtil.constant(g, "scalar", 3); 69 assertEquals(0, n.shape().numDimensions()); 70 71 n = TestUtil.constant(g, "vector", new float[2]); 72 assertEquals(1, n.shape().numDimensions()); 73 assertEquals(2, n.shape().size(0)); 74 75 n = TestUtil.constant(g, "matrix", new float[4][5]); 76 assertEquals(2, n.shape().numDimensions()); 77 assertEquals(4, n.shape().size(0)); 78 assertEquals(5, n.shape().size(1)); 79 } 80 } 81 82 @Test equalsWorksCorrectly()83 public void equalsWorksCorrectly() { 84 assertEquals(Shape.scalar(), Shape.scalar()); 85 assertEquals(Shape.make(1, 2, 3), Shape.make(1, 2, 3)); 86 87 assertNotEquals(Shape.make(1, 2), null); 88 assertNotEquals(Shape.make(1, 2), new Object()); 89 assertNotEquals(Shape.make(1, 2, 3), Shape.make(1, 2, 4)); 90 91 assertNotEquals(Shape.unknown(), Shape.unknown()); 92 assertNotEquals(Shape.make(-1), Shape.make(-1)); 93 assertNotEquals(Shape.make(1, -1, 3), Shape.make(1, -1, 3)); 94 } 95 96 @Test hashCodeIsAsExpected()97 public void hashCodeIsAsExpected() { 98 assertEquals(Shape.make(1, 2, 3, 4).hashCode(), Shape.make(1, 2, 3, 4).hashCode()); 99 assertEquals(Shape.scalar().hashCode(), Shape.scalar().hashCode()); 100 assertEquals(Shape.unknown().hashCode(), Shape.unknown().hashCode()); 101 102 assertNotEquals(Shape.make(1, 2).hashCode(), Shape.make(1, 3).hashCode()); 103 } 104 } 105