A bit of proactive defense

There are times when the first four lines of a unit test for a Java program are missing, causing the tests to fail.  I do not know where, when, or why this is happening.  But this checks to see if the important things are missing right before they are sent to JOBE. If they are missing I add them.

Author: bnmnetp

runestone/activecode/js/activecode.js

@@ -121,6 +121,7 @@ export class ActiveCode extends RunestoneBase {
         }
         suffStart = this.code.indexOf("====");
         if (suffStart > -1) {
+            // The +5 gets past the ====\n
             this.suffix = this.code.substring(suffStart + 5);
             this.code = this.code.substring(0, suffStart);
         }

runestone/activecode/js/livecode.js

@@ -101,6 +101,20 @@ export default class LiveCode extends ActiveCode {
 
         // extract the class names so files can be named properly
         if (this.suffix && this.language == "java") {
+            // the suffix contains unit test code and should include and import of junit
+            // import static org.junit.Assert.*;
+            // import org.junit.*;
+            // import java.io.*;
+            if (this.suffix.indexOf("import org.junit") <0 ) {
+                console.log(`Missing imports in unit tests:
+                    ${this.suffix}`);
+                // alert("The unit tests for this problem are incomplete, Please report this.");
+                this.suffix = `
+                import static org.junit.Assert.*;
+                import org.junit.*;
+                import java.io.*;
+                ` + this.suffix;
+            }
             let classMatch = new RegExp(/public class\s+(\w+)[\s+{]/);
             source = await this.buildProg(false);
             let m = source.match(classMatch);