diff --git a/src/test/java/fr/nancy/iut/SphereTest.java b/src/test/java/fr/nancy/iut/SphereTest.java
index df838720482f8f663e89b609f94c9cb07d061d26..25689bee6b9bcd01f773a4a7ec1dcf5692a3ce18 100644
--- a/src/test/java/fr/nancy/iut/SphereTest.java
+++ b/src/test/java/fr/nancy/iut/SphereTest.java
@@ -21,4 +21,11 @@ public class SphereTest {
     assertEquals(1, s1.distanceTo(s2));
   }
 
+  @Test
+  public void testInContactWith() throws Exception {
+    Sphere s1 = new Sphere(1, new Point3d(10, 10, 10));
+    Sphere s2 = new Sphere(2, new Point3d(10, 10, 11));
+    assertEquals(true , s1.inContactWith(s2));
+  }
+
 }
\ No newline at end of file