testing with JAZZER

testing/AufgabeEmailMatcher/EmailMatcher.java

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+
+import java.util.regex.Pattern;
+import java.util.regex.Matcher;
+
+public class EmailMatcher {
+
+ // Regex für Emailadressen
+ static String emailRegex = "^[a-zA-Z0-9._%+-]+@[a-zA-Z0-9.-]+\\.[a-zA-Z]{2,}$";                 
+
+ static Pattern pattern = Pattern.compile(emailRegex);
+ 
+ static boolean isValidEmail(String email) {
+     Matcher matcher = pattern.matcher(email);
+     return matcher.matches();
+ }
+
+}

testing/AufgabeEmailMatcher/EmailMatcherFuzzTest.java

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+import com.code_intelligence.jazzer.api.FuzzedDataProvider;
+import com.code_intelligence.jazzer.junit.FuzzTest;
+
+import java.security.InvalidParameterException;
+
+public class EmailMatcherFuzzTest {
+    @FuzzTest
+    public static void fuzzerTestOneInput(FuzzedDataProvider data) {
+        String email = data.consumeString(100);
+        if(EmailMatcher.isValidEmail(email)) {
+            throw new InvalidParameterException("Valid email found!");
+        }
+    }
+}

testing/AufgabeEmailMatcher/ExampleMatcher.java

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+
+import java.util.regex.Pattern;
+import java.util.regex.Matcher;
+
+public class ExampleMatcher {
+
+    public static void main(String[] args) {
+
+        if (args.length<1) {
+          System.out.println("No data provided as command line argument!");
+        } else {
+           if (EmailMatcher.isValidEmail(args[0])) { 
+             System.out.println("Valid email address"); 
+           }
+         }
+    }
+
+}

testing/AufgabeEmailMatcher/fuzz.bat

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+set CLASSPATH=.\;%JAVA_HOME%\lib;..\jars\jazzer_standalone.jar;..\jars\jazzer-junit-0.22.1.jar;..\jars\junit5-4.6.14.jar
+
+javac EmailMatcher.java
+javac EmailMatcherFuzzTest.java
+
+java com.code_intelligence.jazzer.Jazzer --target_class=EmailMatcherFuzzTest
+
+@rem ALTERNATIV Klassenpfad im Befehl angeben:
+@rem javac -cp .\;%JAVA_HOME%\lib;..\jars\jazzer_standalone.jar EmailMatcher.java
+@rem javac -cp .\;%JAVA_HOME%\lib;..\jars\jazzer_standalone.jar;..\jars\jazzer-junit-0.22.1.jar;..\jars\junit5-4.6.14.jar EmailMatcherFuzzTest.java
+
+@rem java -cp .\;%JAVA_HOME%\lib;..\jars\jazzer_standalone.jar;..\jars\jazzer-junit-0.22.1.jar;..\jars\junit5-4.6.14.jar com.code_intelligence.jazzer.Jazzer --target_class=EmailMatcherFuzzTest