diff --git a/web/src/main/java/org/springframework/security/web/server/authorization/AuthorizationWebFilter.java b/web/src/main/java/org/springframework/security/web/server/authorization/AuthorizationWebFilter.java
index e703b8b724..584dc43955 100644
--- a/web/src/main/java/org/springframework/security/web/server/authorization/AuthorizationWebFilter.java
+++ b/web/src/main/java/org/springframework/security/web/server/authorization/AuthorizationWebFilter.java
@@ -42,7 +42,7 @@ public class AuthorizationWebFilter implements WebFilter {
 	public Mono<Void> filter(ServerWebExchange exchange, WebFilterChain chain) {
 		return ReactiveSecurityContextHolder.getContext()
 			.map(SecurityContext::getAuthentication)
-			.as( authentication -> this.accessDecisionManager.verify(authentication, exchange))
+			.as(authentication -> this.accessDecisionManager.verify(authentication, exchange))
 			.switchIfEmpty(chain.filter(exchange));
 	}
 }
diff --git a/web/src/test/java/org/springframework/security/web/server/authorization/AuthorizationWebFilterTests.java b/web/src/test/java/org/springframework/security/web/server/authorization/AuthorizationWebFilterTests.java
new file mode 100644
index 0000000000..0b16bc3db0
--- /dev/null
+++ b/web/src/test/java/org/springframework/security/web/server/authorization/AuthorizationWebFilterTests.java
@@ -0,0 +1,149 @@
+/*
+ * Copyright 2002-2017 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.security.web.server.authorization;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.mockito.Mock;
+import org.mockito.junit.MockitoJUnitRunner;
+import org.springframework.mock.http.server.reactive.MockServerHttpRequest;
+import org.springframework.mock.web.MockHttpServletRequest;
+import org.springframework.mock.web.server.MockServerWebExchange;
+import org.springframework.security.access.AccessDeniedException;
+import org.springframework.security.authentication.TestingAuthenticationToken;
+import org.springframework.security.authorization.AuthorizationDecision;
+import org.springframework.security.core.context.ReactiveSecurityContextHolder;
+import org.springframework.security.core.context.SecurityContext;
+import org.springframework.security.core.context.SecurityContextImpl;
+import org.springframework.web.server.ServerWebExchange;
+import org.springframework.web.server.WebFilterChain;
+import org.springframework.web.server.adapter.HttpWebHandlerAdapter;
+import org.springframework.web.server.handler.DefaultWebFilterChain;
+import reactor.core.publisher.Mono;
+import reactor.test.StepVerifier;
+import reactor.test.publisher.PublisherProbe;
+
+import static org.mockito.Mockito.when;
+
+/**
+ * @author Rob Winch
+ * @since 5.0
+ */
+@RunWith(MockitoJUnitRunner.class)
+public class AuthorizationWebFilterTests {
+	@Mock
+	private ServerWebExchange exchange;
+	@Mock
+	private WebFilterChain chain;
+
+	PublisherProbe<Void> chainResult = PublisherProbe.empty();
+
+	@Test
+	public void filterWhenNoSecurityContextThenThrowsAccessDenied() {
+		when(this.chain.filter(this.exchange)).thenReturn(this.chainResult.mono());
+		AuthorizationWebFilter filter = new AuthorizationWebFilter((a,e) -> Mono.error(new AccessDeniedException("Denied")));
+
+		Mono<Void> result = filter.filter(this.exchange, this.chain);
+
+		StepVerifier.create(result)
+			.expectError(AccessDeniedException.class)
+			.verify();
+		this.chainResult.assertWasNotSubscribed();
+	}
+
+	@Test
+	public void filterWhenNoAuthenticationThenThrowsAccessDenied() {
+		when(this.chain.filter(this.exchange)).thenReturn(this.chainResult.mono());
+		AuthorizationWebFilter filter = new AuthorizationWebFilter((a,e) -> Mono.error(new AccessDeniedException("Denied")));
+
+		Mono<Void> result = filter
+			.filter(this.exchange, this.chain)
+			.subscriberContext(ReactiveSecurityContextHolder.withSecurityContext(Mono.just(new SecurityContextImpl())));
+
+		StepVerifier.create(result)
+			.expectError(AccessDeniedException.class)
+			.verify();
+		this.chainResult.assertWasNotSubscribed();
+	}
+
+	@Test
+	public void filterWhenAuthenticationThenThrowsAccessDenied() {
+		when(this.chain.filter(this.exchange)).thenReturn(this.chainResult.mono());
+		AuthorizationWebFilter filter = new AuthorizationWebFilter((a,e) -> Mono.error(new AccessDeniedException("Denied")));
+
+		Mono<Void> result = filter
+			.filter(this.exchange, this.chain)
+			.subscriberContext(ReactiveSecurityContextHolder.withAuthentication(new TestingAuthenticationToken("a","b", "R")));
+
+		StepVerifier.create(result)
+			.expectError(AccessDeniedException.class)
+			.verify();
+		this.chainResult.assertWasNotSubscribed();
+	}
+
+	@Test
+	public void filterWhenDoesNotAccessAuthenticationThenSecurityContextNotSubscribed() {
+		PublisherProbe<SecurityContext> context = PublisherProbe.empty();
+		when(this.chain.filter(this.exchange)).thenReturn(this.chainResult.mono());
+		AuthorizationWebFilter filter = new AuthorizationWebFilter((a,e) -> Mono.error(new AccessDeniedException("Denied")));
+
+		Mono<Void> result = filter
+			.filter(this.exchange, this.chain)
+			.subscriberContext(ReactiveSecurityContextHolder.withSecurityContext(context.mono()));
+
+		StepVerifier.create(result)
+			.expectError(AccessDeniedException.class)
+			.verify();
+		this.chainResult.assertWasNotSubscribed();
+		context.assertWasNotSubscribed();
+	}
+
+	@Test
+	public void filterWhenGrantedAndDoesNotAccessAuthenticationThenChainSubscribedAndSecurityContextNotSubscribed() {
+		PublisherProbe<SecurityContext> context = PublisherProbe.empty();
+		when(this.chain.filter(this.exchange)).thenReturn(this.chainResult.mono());
+		AuthorizationWebFilter filter = new AuthorizationWebFilter((a,e) -> Mono.just(new AuthorizationDecision(true)));
+
+		Mono<Void> result = filter
+			.filter(this.exchange, this.chain)
+			.subscriberContext(ReactiveSecurityContextHolder.withSecurityContext(context.mono()));
+
+		StepVerifier.create(result)
+			.verifyComplete();
+		this.chainResult.assertWasSubscribed();
+		context.assertWasNotSubscribed();
+	}
+
+	@Test
+	public void filterWhenGrantedAndDoeAccessAuthenticationThenChainSubscribedAndSecurityContextSubscribed() {
+		PublisherProbe<SecurityContext> context = PublisherProbe.empty();
+		when(this.chain.filter(this.exchange)).thenReturn(this.chainResult.mono());
+		AuthorizationWebFilter filter = new AuthorizationWebFilter((a,e) -> a
+			.map( auth -> new AuthorizationDecision(true))
+			.defaultIfEmpty(new AuthorizationDecision(true))
+		);
+
+		Mono<Void> result = filter
+			.filter(this.exchange, this.chain)
+			.subscriberContext(ReactiveSecurityContextHolder.withSecurityContext(context.mono()));
+
+		StepVerifier.create(result)
+			.verifyComplete();
+		this.chainResult.assertWasSubscribed();
+		context.assertWasSubscribed();
+	}
+}