Negative and positive unit tests pass.

Author: changqin26

validator/src/test/java/io/adminshell/aas/v3/model/validator/TestAASd_100.java

@@ -0,0 +1,44 @@
+package io.adminshell.aas.v3.model.validator;
+
+import io.adminshell.aas.v3.model.Referable;
+import org.junit.Test;
+
+import java.util.ArrayList;
+
+import static org.junit.Assert.assertTrue;
+import static org.junit.Assert.fail;
+
+/**
+ * Tests the following constraint:
+ * <p>
+ * <i> An attribute with data type "string" is not allowed to be empty. </i>
+ * </p>
+ *
+ * @author bader, chang
+ *
+ */
+
+public class TestAASd_100 {
+    @Test
+    public void idShortWithNotAllowedCharacters() throws ValidationException {
+        Referable wrongReferable = ConstraintTestHelper.createSubmodel(new ArrayList<>());
+
+
+        wrongReferable.setIdShort("");
+        try {
+            ShaclValidator.getInstance().validate(wrongReferable);
+            fail();
+        } catch (ValidationException e) {
+            assertTrue(e.getMessage().endsWith("starting mandatory with a letter. I.e. [a-zA-Z][a-zA-Z0-9_]+."));
+        }
+
+
+    }
+
+    @Test
+    public void idShortWithAllowedCharacters() throws ValidationException {
+        Referable referable = ConstraintTestHelper.createSubmodel(new ArrayList<>());
+        referable.setIdShort("id_Short");
+        ShaclValidator.getInstance().validate(referable);
+    }
+}