Spring Web Flow-如何使用sessionScope中已经存在的值设置单元测试? [英] Spring Web Flow - How can I set up unit test with values already in conversationScope?

问题描述

我正在使用Spring Web Flow 2.0开发一个项目.

I am working on a project using Spring Web Flow 2.0.

我正在尝试对以决策状态开始的流进行单元测试.决策状态检查conversationScope上的对象的值.我无法弄清楚如何在单元测试的conversationScope中插入一个值.

I am trying to unit test a flow that begins with a decision state. The decision state checks the value of an object that is on the conversationScope. I cannot figure out how to insert a value into the conversationScope for the unit test.

我尝试过:

getConversationScope().put("someName", value);
MockExternalContext context = new MockExternalContext();
startFlow(context);

但是，当我调用startFlow(context)时，似乎已清除该值.

However, it seems that when I call startFlow(context) the value is cleared.

我也尝试过:

MockExternalContext context = new MockExternalContext();
setCurrentState("someDecisionState");
resumeFlow(context)

但是测试失败，并显示一条错误消息，告诉我不能从决策状态恢复，而只能从视图状态恢复.

But the test fails with an error telling me that I cannot resume from a decision state, only from a view state.

有人知道我如何在conversationScope上插入模拟值，以便我可以测试这些情况吗?

Does anyone know how I can insert mock values on the conversationScope so that I may test these cases?

推荐答案

这不是很明显，但是我想到了:

It's not obvious, but I came up with this:

public void testFoo() {
    FlowExecution flowExecution = getFlowExecutionFactory().createFlowExecution(getFlowDefinition());
    updateFlowExecution(flowExecution);
    flowExecution.getConversationScope().put("fooBar", "goo");
    flowExecution.start(null, new MockExternalContext());        
    assertCurrentStateEquals("fooView");
}

我必须深入研究底层的AbstractXmlFlowExecutionTests.startFlow()，以查看其如何实例化FlowExecution，然后将其中的一些内容复制并粘贴到单元测试中.

I had to dig into the underlying AbstractXmlFlowExecutionTests.startFlow() to see how it was instantiating the FlowExecution, and copy and paste some of that into the unit test.

这是测试网络流程.

<?xml version="1.0" encoding="UTF-8"?>
<flow xmlns="http://www.springframework.org/schema/webflow"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://www.springframework.org/schema/webflow
        http://www.springframework.org/schema/webflow/spring-webflow-2.0.xsd">

    <action-state id="decideFoo">
        <evaluate expression="conversationScope.fooBar" />
        <transition on="goo" to="fooView" />
        <transition on="gar" to="barView" />
    </action-state>

    <view-state id="fooView" />

    <view-state id="barView" />

</flow>

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