fixed test and added check for output dir

Author: wlanboy

src/main/java/com/wlanboy/cloudconfigpropertygenerator/PropertyGenerator.java

@@ -104,6 +104,12 @@ private void writeConfigMap(Properties props) {
 			Path path = Path.of(configmapFileToWrite);
 			log.info("Writing ConfigMap to {}", path.toAbsolutePath());
 
+			Path parent = path.getParent();
+			if (parent != null && !Files.exists(parent)) {
+				Files.createDirectories(parent);
+				log.info("Created directory {}", parent.toAbsolutePath());
+			}
+
 			StringBuilder yaml = new StringBuilder();
 			yaml.append("apiVersion: v1\n");
 			yaml.append("kind: ConfigMap\n");

src/test/java/com/wlanboy/cloudconfigpropertygenerator/CloudconfigpropertygeneratorApplicationTests.java

@@ -1,12 +1,9 @@
 package com.wlanboy.cloudconfigpropertygenerator;
 
-import org.junit.Test;
-import org.junit.runner.RunWith;
+import org.junit.jupiter.api.Test;
 import org.springframework.boot.test.context.SpringBootTest;
-import org.springframework.test.context.junit4.SpringRunner;
 
-@RunWith(SpringRunner.class)
-@SpringBootTest
+@SpringBootTest(properties = "CONFIGMAP_FILE_TO_WRITE=./output/configmap.yaml")
 public class CloudconfigpropertygeneratorApplicationTests {
 
 	@Test