1 files changed, 28 insertions, 0 deletions
diff --git a/src/test/java/ATCCodes/AtcCodeTest.java b/src/test/java/ATCCodes/AtcCodeTest.java
new file mode 100644
index 0000000..c00e499
--- /dev/null
+++ b/src/test/java/ATCCodes/AtcCodeTest.java
@@ -0,0 +1,28 @@
+package ATCCodes;
+
+import org.junit.jupiter.api.Test;
+
+import static org.junit.jupiter.api.Assertions.assertFalse;
+import static org.junit.jupiter.api.Assertions.assertTrue;
+
+public class AtcCodeTest {
+
+    @Test
+    void testShouldDetectAtcCodeScheme() {
+        assertTrue(AtcCode.isAtcCode("L01"));
+        assertTrue(AtcCode.isAtcCode("L01A"));
+        assertTrue(AtcCode.isAtcCode("L01AA"));
+        assertTrue(AtcCode.isAtcCode("L01AA01"));
+    }
+
+    @Test
+    void testShouldDetectInvalidAtcCodeScheme() {
+        assertFalse(AtcCode.isAtcCode(null));
+        assertFalse(AtcCode.isAtcCode("  "));
+        assertFalse(AtcCode.isAtcCode("irgendwas"));
+        assertFalse(AtcCode.isAtcCode("L00AA"));
+        assertFalse(AtcCode.isAtcCode("Z01AA"));
+        assertFalse(AtcCode.isAtcCode("L01AA0"));
+    }
+
+}