Add repro project for SPR-15701

SPR-15701/build.gradle

@@ -0,0 +1,39 @@
+group = 'org.springframework.issues'
+version = '1.0.0.SNAPSHOT'
+
+buildscript {
+    ext {
+        springBootVersion = '2.0.0.M2'
+    }
+    repositories {
+        maven {
+            url "http://repo.spring.io/libs-milestone"
+        }
+        mavenCentral()
+    }
+    dependencies {
+        classpath("org.springframework.boot:spring-boot-gradle-plugin:${springBootVersion}")
+    }
+}
+
+repositories {
+    maven {
+        url "http://repo.spring.io/libs-milestone"
+    }
+    mavenCentral()
+}
+apply plugin: 'java'
+apply plugin: 'eclipse'
+apply plugin: 'idea'
+apply plugin: 'org.springframework.boot'
+apply plugin: 'io.spring.dependency-management'
+
+sourceCompatibility = 1.8
+targetCompatibility = 1.8
+
+dependencies {
+    compile("org.springframework.boot:spring-boot-starter-webflux")
+    testCompile('org.springframework.boot:spring-boot-starter-test')
+}
+
+

SPR-15701/src/main/java/org/springframework/issues/errorhandling/Application.java

@@ -0,0 +1,12 @@
+package org.springframework.issues.errorhandling;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+
+@SpringBootApplication
+public class Application {
+
+    public static void main(String[] args) {
+        SpringApplication.run(Application.class, args);
+    }
+}

SPR-15701/src/main/java/org/springframework/issues/errorhandling/CustomException.java

@@ -0,0 +1,11 @@
+package org.springframework.issues.errorhandling;
+
+/**
+ * Created by dorongold on 6/23/17.
+ */
+public class CustomException extends RuntimeException {
+
+    public CustomException(final String message, final Throwable cause) {
+        super(message, cause);
+    }
+}

SPR-15701/src/main/java/org/springframework/issues/errorhandling/HelloController.java

@@ -0,0 +1,22 @@
+package org.springframework.issues.errorhandling;
+
+import org.springframework.web.bind.annotation.ExceptionHandler;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+@RestController
+public class HelloController {
+
+    public static final String ERROR_MSG = "An error occurred!";
+
+    @RequestMapping("/hello")
+    public String hello() {
+        final NestedException nested = new NestedException("nested");
+        throw new CustomException("outer", nested);
+    }
+
+    @ExceptionHandler()
+    public String handleCustomException(final CustomException e) {
+        return ERROR_MSG;
+    }
+}

SPR-15701/src/main/java/org/springframework/issues/errorhandling/NestedException.java

@@ -0,0 +1,11 @@
+package org.springframework.issues.errorhandling;
+
+/**
+ * Created by dorongold on 6/23/17.
+ */
+public class NestedException extends Exception {
+
+    public NestedException(final String message) {
+        super(message);
+    }
+}

SPR-15701/src/test/java/org/springframework/issues/errorhandling/HelloControllerTest.java

@@ -0,0 +1,36 @@
+package org.springframework.issues.errorhandling;
+
+import static org.junit.Assert.assertEquals;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.test.autoconfigure.web.reactive.AutoConfigureWebTestClient;
+import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.test.context.junit4.SpringRunner;
+import org.springframework.test.web.reactive.server.WebTestClient;
+
+/**
+ * Created by dorongold on 6/24/17.
+ */
+
+@RunWith(SpringRunner.class)
+@SpringBootTest
+@AutoConfigureWebTestClient
+public class HelloControllerTest {
+
+    @Autowired
+    private WebTestClient client;
+
+    /*
+     * fails because exception handler invocation fails with "java.lang.IllegalStateException: No suitable resolver
+     * for argument 0 of type..."
+     */
+    @Test
+    public void testHello() {
+
+        final String response = client.get().uri("hello").exchange().expectBody(String.class).returnResult().getResponseBody();
+        assertEquals(HelloController.ERROR_MSG, response);
+    }
+
+}