[commons-numbers] 14/19: Add a test for square()

[ah...@apache.org]

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aherbert pushed a commit to branch master
in repository https://gitbox.apache.org/repos/asf/commons-numbers.git

commit 89c907fb4e25d5851303863ea0b6b05cd4555920
Author: aherbert <ah...@apache.org>
AuthorDate: Fri Dec 6 16:16:43 2019 +0000

    Add a test for square()
---
 .../org/apache/commons/numbers/complex/ComplexTest.java   | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/commons-numbers-complex/src/test/java/org/apache/commons/numbers/complex/ComplexTest.java b/commons-numbers-complex/src/test/java/org/apache/commons/numbers/complex/ComplexTest.java
index fdd0b68..8efd26d 100644
--- a/commons-numbers-complex/src/test/java/org/apache/commons/numbers/complex/ComplexTest.java
+++ b/commons-numbers-complex/src/test/java/org/apache/commons/numbers/complex/ComplexTest.java
@@ -1301,4 +1301,19 @@ public class ComplexTest {
         Assertions.assertEquals(0.54930614433405489, c.getReal());
         Assertions.assertEquals(1.5707963267948966, c.getImaginary());
     }
+
+    @Test
+    public void testSquare() {
+        final UniformRandomProvider rng = RandomSource.create(RandomSource.SPLIT_MIX_64);
+        final double min = -5;
+        final double range = -2 * min;
+        for (int i = 0; i < 10; i++) {
+            final Complex z = Complex.ofCartesian(min + range * rng.nextDouble(), 
+                                                  min + range * rng.nextDouble());
+            final Complex c1 = z.multiply(z);
+            final Complex c2 = z.square();
+            Assertions.assertEquals(c1.getReal(), c2.getReal(), "real");
+            Assertions.assertEquals(c1.getImaginary(), c2.getImaginary(), "imaginary");
+        }
+    }
 }