add negative summary test for java

Author: Jami Cogswell

java/ql/test/query-tests/Telemetry/SupportedExternalApis/SupportedExternalApis.expected

@@ -1,9 +1,10 @@
+| java.io.File#File(String) | 2 |
 | java.net.URL#URL(String) | 2 |
-| java.io.File#File(String) | 1 |
 | java.io.FileWriter#FileWriter(File) | 1 |
 | java.lang.StringBuilder#append(String) | 1 |
 | java.lang.StringBuilder#toString() | 1 |
 | java.net.URL#openConnection() | 1 |
 | java.net.URL#openStream() | 1 |
 | java.net.URLConnection#getInputStream() | 1 |
 | java.util.Map#put(Object,Object) | 1 |
+| org.apache.commons.io.FileUtils#deleteDirectory(File) | 1 |

java/ql/test/query-tests/Telemetry/SupportedExternalApis/SupportedExternalApis.java

@@ -5,6 +5,7 @@
 import java.net.URL;
 import java.io.File;
 import java.io.FileWriter;
+import org.apache.commons.io.FileUtils;
 
 class SupportedExternalApis {
 	public static void main(String[] args) throws Exception {
@@ -22,5 +23,7 @@ public static void main(String[] args) throws Exception {
 
 		new FileWriter(new File("foo")); // supported sink (FileWriter), supported summary (File)
 		new URL("http://foo").openStream(); // supported sink (openStream), supported summary (URL)
+
+		FileUtils.deleteDirectory(new File("foo")); // supported negative summary (deleteDirectory), supported summary (File)
 	}
 }