#99 - Support @Inject on method with no arguments

Author: rbygrave

inject-generator/src/main/java/io/avaje/inject/generator/BeanReader.java

@@ -195,8 +195,8 @@ private void readMethod(Element element, boolean factory) {
     Inject inject = element.getAnnotation(Inject.class);
     if (inject != null) {
       MethodReader methodReader = new MethodReader(context, methodElement, beanType);
-      methodReader.read();
-      if (!methodReader.getParams().isEmpty()) {
+      if (methodReader.isNotPrivate()) {
+        methodReader.read();
         injectMethods.add(methodReader);
       }
     }

inject-test/src/test/java/org/example/coffee/provider/MethodInjectProvider.java

@@ -9,11 +9,22 @@ class MethodInjectProvider {
 
   private Provider<AProv> aProvProvider;
 
+  private boolean emptyMethodInjection;
+
   @Inject
   void set(Provider<AProv> aProvProvider) {
     this.aProvProvider = aProvProvider;
   }
 
+  @Inject
+  void emptyMethod() {
+    this.emptyMethodInjection = true;
+  }
+
+  public boolean isEmptyMethodInjection() {
+    return emptyMethodInjection;
+  }
+
   AProv testGet() {
     return aProvProvider.get();
   }

inject-test/src/test/java/org/example/coffee/provider/MethodInjectProviderTest.java

@@ -18,4 +18,10 @@ void test() {
     AProv beanDirect = SystemContext.getBean(AProv.class);
     assertThat(aProv).isSameAs(beanDirect);
   }
+
+  @Test
+  void emptyMethodInjection() {
+    MethodInjectProvider bean = SystemContext.getBean(MethodInjectProvider.class);
+    assertThat(bean.isEmptyMethodInjection()).isTrue();
+  }
 }