add circular detection tests

Author: tuhuynh27

Diff for: src/test/java/dev/keva/ioc/circular/CircularTest.java

@@ -0,0 +1,18 @@
+package dev.keva.ioc.circular;
+
+import dev.keva.ioc.KevaIoC;
+import dev.keva.ioc.annotation.ComponentScan;
+import org.junit.jupiter.api.Test;
+
+import static org.junit.jupiter.api.Assertions.assertThrows;
+
+@ComponentScan("dev.keva.ioc.circular")
+public class CircularTest {
+
+    @Test
+    void testCircular() {
+        assertThrows(dev.keva.ioc.exception.IoCException.class, () -> {
+            KevaIoC kevaIoC = KevaIoC.initBeans(CircularTest.class);
+        });
+    }
+}

Diff for: src/test/java/dev/keva/ioc/circular/ClassA.java

@@ -0,0 +1,18 @@
+package dev.keva.ioc.circular;
+
+import dev.keva.ioc.annotation.Autowired;
+import dev.keva.ioc.annotation.Component;
+
+@Component
+public class ClassA {
+    private final ClassB classB;
+
+    @Autowired
+    public ClassA(ClassB classB) {
+        this.classB = classB;
+    }
+
+    public void methodA() {
+        classB.methodB();
+    }
+}

Diff for: src/test/java/dev/keva/ioc/circular/ClassB.java

@@ -0,0 +1,18 @@
+package dev.keva.ioc.circular;
+
+import dev.keva.ioc.annotation.Autowired;
+import dev.keva.ioc.annotation.Component;
+
+@Component
+public class ClassB {
+    private final ClassA classA;
+
+    @Autowired
+    public ClassB(ClassA classA) {
+        this.classA = classA;
+    }
+
+    public void methodB() {
+        classA.methodA();
+    }
+}