Add PropertyTokenizer test

src/test/java/org/apache/ibatis/reflection/property/PropertyTokenizerTest.java

@@ -0,0 +1,80 @@
+/*
+ *    Copyright 2009-2024 the original author or authors.
+ *
+ *    Licensed under the Apache License, Version 2.0 (the "License");
+ *    you may not use this file except in compliance with the License.
+ *    You may obtain a copy of the License at
+ *
+ *       https://www.apache.org/licenses/LICENSE-2.0
+ *
+ *    Unless required by applicable law or agreed to in writing, software
+ *    distributed under the License is distributed on an "AS IS" BASIS,
+ *    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *    See the License for the specific language governing permissions and
+ *    limitations under the License.
+ */
+package org.apache.ibatis.reflection.property;
+
+import org.junit.jupiter.api.Test;
+
+import static org.assertj.core.api.Assertions.*;
+import static org.junit.jupiter.api.Assertions.*;
+
+/**
+ * @author <a href="[email protected]">mawen12</a>
+ * @see PropertyTokenizer
+ */
+class PropertyTokenizerTest {
+
+  @Test
+  void shouldParsePropertySuccessfully() {
+    String fullname = "id";
+    PropertyTokenizer tokenizer = new PropertyTokenizer(fullname);
+
+    assertEquals("id", tokenizer.getIndexedName());
+    assertEquals("id", tokenizer.getName());
+
+    assertNull(tokenizer.getChildren());
+    assertNull(tokenizer.getIndex());
+    assertFalse(tokenizer.hasNext());
+    assertNull(tokenizer.getIndex());
+
+    assertThatExceptionOfType(UnsupportedOperationException.class)
+      .isThrownBy(tokenizer::remove)
+      .withMessage("Remove is not supported, as it has no meaning in the context of properties.");
+  }
+
+  @Test
+  void shouldParsePropertyWhichContainsDelimSuccessfully() {
+    String fullname = "person.id";
+    PropertyTokenizer tokenizer = new PropertyTokenizer(fullname);
+
+    assertEquals("person", tokenizer.getIndexedName());
+    assertEquals("person", tokenizer.getName());
+    assertTrue(tokenizer.hasNext());
+    assertEquals("id", tokenizer.getChildren());
+
+    assertNull(tokenizer.getIndex());
+
+    assertThatExceptionOfType(UnsupportedOperationException.class)
+      .isThrownBy(tokenizer::remove)
+      .withMessage("Remove is not supported, as it has no meaning in the context of properties.");
+  }
+
+  @Test
+  void shouldParsePropertyWhichContainsIndexSuccessfully() {
+    String fullname = "array[0]";
+    PropertyTokenizer tokenizer = new PropertyTokenizer(fullname);
+
+    assertEquals("array[0]", tokenizer.getIndexedName());
+    assertEquals("array", tokenizer.getName());
+    assertEquals("0", tokenizer.getIndex());
+
+    assertFalse(tokenizer.hasNext());
+    assertNull(tokenizer.getChildren());
+
+    assertThatExceptionOfType(UnsupportedOperationException.class)
+      .isThrownBy(tokenizer::remove)
+      .withMessage("Remove is not supported, as it has no meaning in the context of properties.");
+  }
+}