Merge branch 'develop' into releases/Release_2_11_Branch

[jalview.git] / test / jalview / util / MathUtilsTest.java

diff --git a/test/jalview/util/MathUtilsTest.java b/test/jalview/util/MathUtilsTest.java
new file mode 100644 (file)
index 0000000..dc23472
--- /dev/null
+++ b/test/jalview/util/MathUtilsTest.java
@@ -0,0 +1,26 @@
+package jalview.util;
+
+import static org.testng.Assert.assertEquals;
+
+import org.testng.annotations.Test;
+
+public class MathUtilsTest
+{
+  @Test(groups = "Functional")
+  public void testGcd()
+  {
+    assertEquals(MathUtils.gcd(0, 0), 0);
+    assertEquals(MathUtils.gcd(0, 1), 1);
+    assertEquals(MathUtils.gcd(1, 0), 1);
+    assertEquals(MathUtils.gcd(1, 1), 1);
+    assertEquals(MathUtils.gcd(1, -1), 1);
+    assertEquals(MathUtils.gcd(-1, 1), 1);
+    assertEquals(MathUtils.gcd(2, 3), 1);
+    assertEquals(MathUtils.gcd(4, 2), 2);
+    assertEquals(MathUtils.gcd(2, 4), 2);
+    assertEquals(MathUtils.gcd(2, -4), 2);
+    assertEquals(MathUtils.gcd(-2, 4), 2);
+    assertEquals(MathUtils.gcd(-2, -4), 2);
+    assertEquals(MathUtils.gcd(2 * 3 * 5 * 7 * 11, 3 * 7 * 13 * 17), 3 * 7);
+  }
+}