[test] add a switch to create a scope per test (avaje#859)

Author: SentryMan

inject-test/src/main/java/io/avaje/inject/test/InjectTest.java

@@ -1,12 +1,12 @@
 package io.avaje.inject.test;
 
-import org.junit.jupiter.api.extension.ExtendWith;
-
 import java.lang.annotation.ElementType;
 import java.lang.annotation.Retention;
 import java.lang.annotation.RetentionPolicy;
 import java.lang.annotation.Target;
 
+import org.junit.jupiter.api.extension.ExtendWith;
+
 /**
  * An avaje-inject test supporting {@code @Inject} along with Mockito annotations -
  * {@code @Mock, @Spy, @Captor}.
@@ -20,4 +20,7 @@
 
   /** Wiring profiles to use */
   String[] profiles() default {};
+
+  /** Create a new test beanscope for each test methods */
+  boolean scopePerMethod() default false;
 }

inject-test/src/main/java/io/avaje/inject/test/MetaInfo.java

@@ -1,10 +1,10 @@
 package io.avaje.inject.test;
 
+import java.util.Optional;
+
 import io.avaje.inject.BeanScope;
 import io.avaje.inject.BeanScopeBuilder;
 
-import java.util.Optional;
-
 /**
  * Wraps the underlying metadata (fields with annotations @Mock, @Spy, @Inject, @Captor).
  */
@@ -45,14 +45,17 @@ private TestBeans buildSet(GlobalTestBeans.Beans parent, Object testInstance) {
   }
 
   private TestBeans buildTestBeans(GlobalTestBeans.Beans parent, Object testInstance) {
+    var injectTest =
+        Optional.ofNullable(testInstance)
+            .map(Object::getClass)
+            .map(c -> c.getAnnotation(InjectTest.class));
+
     // wiring profiles
-    String[] profiles = Optional.ofNullable(testInstance)
-      .map(Object::getClass)
-      .map(c -> c.getAnnotation(InjectTest.class))
-      .map(InjectTest::profiles)
-      .orElse(new String[0]);
+    String[] profiles = injectTest.map(InjectTest::profiles).orElse(new String[0]);
 
-    if (profiles.length > 0 || reader.hasMocksOrSpies(testInstance)) {
+    if (profiles.length > 0
+        || injectTest.map(InjectTest::scopePerMethod).orElse(false)
+        || reader.hasMocksOrSpies(testInstance)) {
       // need to build a BeanScope for this using baseBeans() as the parent
       final BeanScopeBuilder builder = BeanScope.builder();
       if (parent != null) {

inject-test/src/test/java/org/example/injectextension/ScopePerMethodTest.java

@@ -0,0 +1,26 @@
+package org.example.injectextension;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+import org.junit.jupiter.api.Test;
+
+import io.avaje.inject.test.InjectTest;
+import jakarta.inject.Inject;
+
+@InjectTest(scopePerMethod = true)
+class ScopePerMethodTest {
+  @Inject ƎNA ena;
+  static ƎNA ayna;
+
+  @Test
+  void one() {
+    assertThat(ena).isNotSameAs(ayna);
+    ayna = ena;
+  }
+
+  @Test
+  void two() {
+    assertThat(ena).isNotSameAs(ayna);
+    ayna = ena;
+  }
+}

inject-test/src/test/java/org/example/injectextension/ƎNA.java

@@ -0,0 +1,13 @@
+package org.example.injectextension;
+
+import jakarta.inject.Singleton;
+
+@Singleton
+public class ƎNA {
+
+  public String greet() {
+    return "Ah, these are the most utmost grand of days";
+  }
+
+  public void giveGift() {}
+}