增加Ognl表达式测试用例

mybatis-plus/src/test/java/com/baomidou/mybatisplus/test/OgnlTest.java

@@ -0,0 +1,50 @@
+package com.baomidou.mybatisplus.test;
+
+import lombok.Data;
+import org.apache.ibatis.scripting.xmltags.OgnlCache;
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Test;
+
+import java.util.HashMap;
+import java.util.Map;
+
+/**
+ * @author nieqiuqiu
+ */
+class OgnlTest {
+
+    @Data
+    private static class Bean {
+        private String name;
+        private Map<String, Object> properties;
+    }
+
+    /**
+     * size keys keySet values isEmpty 这五个key值需要注意一下.
+     *
+     * @see org.apache.ibatis.ognl.MapPropertyAccessor#getProperty
+     */
+    @Test
+    void test() {
+        Map<String, Object> propertiesMap = new HashMap<>();
+        propertiesMap.put("color", "yellow");
+        propertiesMap.put("size", "xxxL");
+        Assertions.assertEquals(OgnlCache.getValue("color", propertiesMap), "yellow");
+        Assertions.assertEquals(OgnlCache.getValue("size", propertiesMap), 2);
+        Assertions.assertFalse((Boolean) OgnlCache.getValue("isEmpty", propertiesMap));
+        Assertions.assertNull(OgnlCache.getValue("['isEmpty']", propertiesMap));
+        Assertions.assertEquals(OgnlCache.getValue("['size']", propertiesMap), "xxxL");
+        Assertions.assertEquals(OgnlCache.getValue("['color']", propertiesMap), "yellow");
+        Bean bean = new Bean();
+        bean.setName("靓仔");
+        bean.setProperties(propertiesMap);
+        Assertions.assertEquals(OgnlCache.getValue("name", bean), "靓仔");
+        Assertions.assertEquals(OgnlCache.getValue("['name']", bean), "靓仔");
+        Assertions.assertEquals(OgnlCache.getValue("properties.size", bean), 2);
+        Assertions.assertEquals(OgnlCache.getValue("properties['size']", bean), "xxxL");
+        Assertions.assertEquals(OgnlCache.getValue("properties.color", bean), "yellow");
+        Assertions.assertEquals(OgnlCache.getValue("properties['color']", bean), "yellow");
+        Assertions.assertFalse((Boolean) OgnlCache.getValue("properties.isEmpty", bean));
+        Assertions.assertNull(OgnlCache.getValue("properties['isEmpty']", bean));
+    }
+}