initial import of source for BAEL-1786

core-java-8/src/test/java/com/baeldung/reflect/MethodParamNameTest.java

@@ -0,0 +1,33 @@
+package com.baeldung.reflect;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+import java.lang.reflect.Parameter;
+import java.util.Arrays;
+import java.util.List;
+
+import  static java.util.stream.Collectors.toList;
+import org.junit.Test;
+
+public class MethodParamNameTest {
+
+    @Test
+    public void whenGetConstructorParams_thenOk() throws NoSuchMethodException, SecurityException {
+    	List<Parameter> parameters 
+    		= Arrays.asList(
+    				Person.class.getConstructor(String.class, String.class, Integer.class)
+    					.getParameters());
+    	List<String> parameterNames 
+    		= parameters.stream().map(Parameter::getName).collect(toList());
+    	assertThat(parameterNames)
+    		.containsExactlyInAnyOrder("lastName", "firstName", "age");    
+    }
+
+    @Test
+    public void whenGetMethodParams_thenOk() throws NoSuchMethodException, SecurityException {
+    	List<Parameter> parameters 
+    		= Arrays.asList(
+    				Person.class.getMethod("setLastName", String.class).getParameters());
+    	assertThat(parameters.get(0).getName()).isEqualTo("lastName");
+    }
+}