Merge pull request #103 from ABHAY0O7/core-test

Test for ASM working.

depclean-core/src/test/java/se/kth/depclean/core/analysis/ASMTest.java

@@ -0,0 +1,73 @@
+package se.kth.depclean.core.analysis;
+
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.IOException;
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.DisplayName;
+import org.junit.jupiter.api.Test;
+import org.objectweb.asm.AnnotationVisitor;
+import org.objectweb.asm.ClassReader;
+import org.objectweb.asm.FieldVisitor;
+import org.objectweb.asm.MethodVisitor;
+import org.objectweb.asm.signature.SignatureVisitor;
+import lombok.extern.slf4j.Slf4j;
+import se.kth.depclean.core.analysis.asm.DefaultAnnotationVisitor;
+import se.kth.depclean.core.analysis.asm.DefaultClassVisitor;
+import se.kth.depclean.core.analysis.asm.DefaultFieldVisitor;
+import se.kth.depclean.core.analysis.asm.DefaultMethodVisitor;
+import se.kth.depclean.core.analysis.asm.DefaultSignatureVisitor;
+import se.kth.depclean.core.analysis.asm.ResultCollector;
+import se.kth.depclean.core.analysis.graph.ClassMembersVisitorCounter;
+
+@Slf4j
+public class ASMTest {
+
+  // Resource class for testing.
+  private static final File classFile = new File("src/test/resources/ClassFileVisitorResources/ExampleClass.class");
+
+  @Test
+  @DisplayName("Test that the default asm classes are working fine.")
+  void test_for_proper_asm_functioning() throws IOException {
+
+    ResultCollector resultCollector = new ResultCollector();
+    FileInputStream fileInputStream = new FileInputStream(classFile);
+    ClassReader reader = new ClassReader(fileInputStream);
+
+    AnnotationVisitor annotationVisitor = new DefaultAnnotationVisitor(resultCollector);
+    SignatureVisitor signatureVisitor = new DefaultSignatureVisitor(resultCollector);
+    FieldVisitor fieldVisitor = new DefaultFieldVisitor(
+        annotationVisitor,
+        resultCollector
+    );
+    MethodVisitor methodVisitor = new DefaultMethodVisitor(
+        annotationVisitor,
+        signatureVisitor,
+        resultCollector
+    );
+    DefaultClassVisitor defaultClassVisitor = new DefaultClassVisitor(
+        signatureVisitor,
+        annotationVisitor,
+        fieldVisitor,
+        methodVisitor,
+        resultCollector
+    );
+
+    reader.accept(defaultClassVisitor, 0);
+
+    // Confirms that after analyzing there were no annotations in the test class.
+    Assertions.assertEquals(0, ClassMembersVisitorCounter.getNbVisitedAnnotations());
+
+    // Confirms that after analyzing there was only 1 field in the test class.
+    Assertions.assertEquals(1, ClassMembersVisitorCounter.getNbVisitedFields());
+
+    // Confirms that after analyzing there were 3 methods in the test class.
+    Assertions.assertEquals(3, ClassMembersVisitorCounter.getNbVisitedMethods());
+
+    // Confirms that after analyzing there was only 1 type in the test class.
+    Assertions.assertEquals(1, ClassMembersVisitorCounter.getNbVisitedTypes());
+
+    // Confirms that the result of analyzed data has been collected successfully.
+    Assertions.assertFalse(resultCollector.getDependencies().isEmpty());
+  }
+}