Add property to enable/disable Guice just-in-time bindings and log just-in-time bindings usage

src/test/java/org/springframework/guice/JustInTimeBindingTests.java

@@ -0,0 +1,61 @@
+package org.springframework.guice;
+
+import org.junit.After;
+import org.junit.Test;
+import org.springframework.beans.factory.UnsatisfiedDependencyException;
+import org.springframework.beans.factory.support.RootBeanDefinition;
+import org.springframework.context.annotation.AnnotationConfigApplicationContext;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.guice.annotation.EnableGuiceModules;
+
+import javax.inject.Inject;
+
+import static org.junit.Assert.assertNotNull;
+
+public class JustInTimeBindingTests {
+
+    @After
+    public void tearDown() {
+        System.clearProperty("spring.guice.autowireJIT");
+    }
+
+    @Test
+    public void springWithJustInTimeBinding() {
+        System.setProperty("spring.guice.autowireJIT", "true");
+        assertNotNull(springGetFoo());
+    }
+
+    @Test(expected = UnsatisfiedDependencyException.class)
+    public void springWithoutJustInTimeBinding() {
+        System.setProperty("spring.guice.autowireJIT", "false");
+        springGetFoo();
+    }
+
+    private Foo springGetFoo() {
+        AnnotationConfigApplicationContext context = new AnnotationConfigApplicationContext(ModulesConfig.class);
+        context.getDefaultListableBeanFactory().registerBeanDefinition(Foo.class.getSimpleName(), new RootBeanDefinition(Foo.class));
+        return context.getBean(Foo.class);
+    }
+
+    @Configuration
+    @EnableGuiceModules
+    static class ModulesConfig {
+
+    }
+
+
+    public static class Service {
+    }
+
+    public static class Foo {
+
+        Service service;
+
+        @Inject
+        public Foo(Service service) {
+            this.service = service;
+        }
+
+    }
+
+}