Added tests for Busybox preprocessing

Author: AlexanderSchultheiss

src/main/java/de/variantsync/evolution/repository/BusyboxRepository.java

@@ -1,5 +1,6 @@
 package de.variantsync.evolution.repository;
 
+import de.variantsync.evolution.util.Logger;
 import de.variantsync.evolution.variability.SPLCommit;
 import org.eclipse.jgit.api.errors.GitAPIException;
 
@@ -15,8 +16,8 @@
 
 /***
  * A specialized SPLRepository that performs the necessary preprocessing of BusyBox source files, whenever a new
- * commit is checked out. The preprocessing includes splitting of lines into multiple lines in order to deal with
- * inline preprocessor macros used to model variability.
+ * commit or branch is checked out. The preprocessing includes splitting of lines into multiple lines in order to deal
+ * with inline preprocessor macros used to model variability.
  * <br>
  * The preprocessing was copied from KernelHaven: net.ssehub.kernel_haven.busyboot.PrepareBusybox;
  * Copyright 2018-2019 University of Hildesheim, Software Systems Engineering
@@ -31,14 +32,25 @@ public BusyboxRepository(Path path) {
     @Override
     public SPLCommit checkoutCommit(final SPLCommit c, boolean forced) throws GitAPIException, IOException {
         SPLCommit previousCommit = super.checkoutCommit(c, forced);
-        BusyboxRepository.normalizeDir(this.getPath().toFile());
+        this.preprocess();
         return previousCommit;
     }
 
     @Override
     public void checkoutBranch(final Branch branch) throws GitAPIException, IOException {
         super.checkoutBranch(branch);
-        BusyboxRepository.normalizeDir(this.getPath().toFile());
+        this.preprocess();
+    }
+
+    public void preprocess() throws IOException {
+        try {
+            Logger.debug("Normalizing Busybox files.");
+            BusyboxRepository.normalizeDir(this.getPath().toFile());
+            Logger.debug("Finished normalization of Busybox files.");
+        } catch (IOException e) {
+            Logger.error("Was not able to normalize Busybox files.", e);
+            throw e;
+        }
     }
 
     /*

src/test/java/de/variantsync/evolution/repository/BusyboxRepositoryTest.java

@@ -0,0 +1,43 @@
+package de.variantsync.evolution.repository;
+
+import de.variantsync.evolution.Main;
+import de.variantsync.evolution.util.Logger;
+import de.variantsync.evolution.variability.SPLCommit;
+import org.eclipse.jgit.api.errors.GitAPIException;
+import org.junit.After;
+import org.junit.Ignore;
+import org.junit.Test;
+
+import java.io.IOException;
+import java.nio.file.Path;
+
+// Tests are disabled as they require custom setup. They also do not assert anything and are meant to be used when debugging.
+@Ignore
+public class BusyboxRepositoryTest {
+    // Adjust the path to the root of Busybox for testing
+    private final BusyboxRepository BUSYBOX = new BusyboxRepository(Path.of("C:\\Users\\Alex\\develop\\busybox"));
+
+    static {
+        Main.Initialize();
+    }
+
+    // Clean the repo after each test
+    @After
+    public void restoreFiles() throws GitAPIException, IOException {
+        BUSYBOX.stashCreate(true);
+        BUSYBOX.dropStash();
+    }
+
+    @Test
+    public void normalize() throws IOException {
+        BUSYBOX.preprocess();
+    }
+
+    @Test
+    public void checkoutCommit() throws GitAPIException, IOException {
+        SPLCommit simpleCommit = new SPLCommit("f27a6a94a7fb172a6768bc450dbdec68f15bc78f");
+        SPLCommit previousCommit = BUSYBOX.checkoutCommit(simpleCommit);
+        BUSYBOX.checkoutCommit(previousCommit, true);
+    }
+
+}