Backport selected refinements from the nullability efforts
Issue: SPR-15656
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@@ -1,5 +1,5 @@
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/*
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* Copyright 2002-2012 the original author or authors.
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* Copyright 2002-2017 the original author or authors.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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@@ -33,9 +33,7 @@ import org.springframework.util.Assert;
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import org.springframework.util.ObjectUtils;
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/**
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* <p>Mock implementation of the {@link javax.servlet.FilterChain} interface. Used
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* for testing the web framework; also useful for testing custom
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* {@link javax.servlet.Filter} implementations.
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* Mock implementation of the {@link javax.servlet.FilterChain} interface.
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*
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* <p>A {@link MockFilterChain} can be configured with one or more filters and a
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* Servlet to invoke. The first time the chain is called, it invokes all filters
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@@ -120,10 +118,7 @@ public class MockFilterChain implements FilterChain {
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public void doFilter(ServletRequest request, ServletResponse response) throws IOException, ServletException {
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Assert.notNull(request, "Request must not be null");
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Assert.notNull(response, "Response must not be null");
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if (this.request != null) {
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throw new IllegalStateException("This FilterChain has already been called!");
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}
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Assert.state(this.request == null, "This FilterChain has already been called!");
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if (this.iterator == null) {
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this.iterator = this.filters.iterator();
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@@ -40,9 +40,7 @@ import org.springframework.util.Assert;
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/**
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* Mock implementation of the {@link javax.servlet.jsp.PageContext} interface.
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*
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* <p>Used for testing the web framework; only necessary for testing
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* applications when testing custom JSP tags.
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* Only necessary for testing applications when testing custom JSP tags.
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*
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* <p>Note: Expects initialization via the constructor rather than via the
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* {@code PageContext.initialize} method. Does not support writing to a
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