Add a simple test for CLibrary.setenv/chdir

Author: gnodet

pom.xml

@@ -32,6 +32,8 @@
     <description>Jansi is a java library for generating and interpreting ANSI escape sequences.</description>
 
     <properties>
+        <javadocSource>6</javadocSource>
+        <jdkTarget>1.7</jdkTarget>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
         <slf4j-version>1.6.1</slf4j-version>
         <project.build.outputTimestamp>2021-02-11T16:12:43Z</project.build.outputTimestamp>
@@ -149,8 +151,8 @@
                 <version>3.8.1</version>
                 <configuration>
                     <!-- parent pom 1.11 forces version instead of using property -->
-                    <source>1.6</source>
-                    <target>1.6</target>
+                    <source>${jdkTarget}</source>
+                    <target>${jdkTarget}</target>
                 </configuration>
             </plugin>
             <plugin>
@@ -252,7 +254,7 @@
                     <version>false</version>
                     <author>true</author>
                     <keywords>true</keywords>
-                    <source>6</source>
+                    <source>${javadocSource}</source>
                 </configuration>
                 <executions>
                     <execution>
@@ -334,4 +336,17 @@
         </dependency>
     </dependencies>
 
+    <profiles>
+        <profile>
+            <id>jdk15+</id>
+            <activation>
+                <jdk>[15,)</jdk>
+            </activation>
+            <properties>
+                <jdkTarget>1.7</jdkTarget>
+                <javadocSource>7</javadocSource>
+            </properties>
+        </profile>
+    </profiles>
+
 </project>

src/test/java/org/fusesource/jansi/internal/CLibraryTest.java

@@ -0,0 +1,42 @@
+/*
+ * Copyright (C) 2009-2021 the original author(s).
+ *
+ * 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
+ *
+ * http://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.fusesource.jansi.internal;
+
+import java.io.File;
+
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.condition.DisabledOnJre;
+import org.junit.jupiter.api.condition.DisabledOnOs;
+import org.junit.jupiter.api.condition.JRE;
+import org.junit.jupiter.api.condition.OS;
+
+@DisabledOnOs(OS.WINDOWS)
+@DisabledOnJre({JRE.JAVA_15, JRE.JAVA_16})
+public class CLibraryTest {
+
+    @Test
+    void testChdir() {
+        File d = new File("target/tstDir");
+        d.mkdirs();
+        CLibrary.chdir(d.getAbsolutePath());
+    }
+
+    @Test
+    void testSetenv() {
+        CLibrary.setenv("MY_NAME", "myValue");
+    }
+
+}