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Add test case for tf.reduce_sum(..., axis = ...) (issue #822) #917

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Merged
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Mar 10, 2022
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Add test case for tf.reduce_sum(..., axis = ...) (issue #822) #917

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18 changes: 18 additions & 0 deletions test/TensorFlowNET.Graph.UnitTest/GradientTest/GradientTest.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -175,6 +175,24 @@ void test(string name, Func<Tensor, Tensor> tfF, Func<double, (double, double)>
new[] { -1.0, 1.0 });
}

[TestMethod]
public void testReduceSumGradients()
{
var x = tf.placeholder(tf.float64, shape: new Shape(1, 1));
var m = tf.broadcast_to(x, new Shape(2, 3));
var g0 = tf.gradients(tf.reduce_sum(m), x)[0];
var g1 = tf.gradients(tf.reduce_sum(m, axis: 0), x)[0];
var g2 = tf.gradients(tf.reduce_sum(m, axis: 1), x)[0];

using (var session = tf.Session())
{
var (r0, r1, r2) = session.run((g0, g1, g2), new FeedItem(x, 1.0));
self.assertFloat64Equal(6.0, r0[0], $"tf.reduce_sum(...)");
self.assertFloat64Equal(2.0, r1[0], $"tf.reduce_sum(..., axis = 0)");
self.assertFloat64Equal(3.0, r2[0], $"tf.reduce_sum(..., axis = 1)");
}
}

[TestMethod]
public void testTanhGradient()
{
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