37.9. 模拟现有端点

Camel 现在允许您自动模拟 Camel 路由中的现有端点。

注意

它的工作原理
端点仍在操作中。不同的情况是，Mock 端点被先注入并接收消息，然后将消息委派给目标端点。您可以将它视为一种拦截器和委派或端点监听程序。

假设您有以下给定路由：

Route（路由）

    @Override
    protected RouteBuilder createRouteBuilder() throws Exception {
        return new RouteBuilder() {
            @Override
            public void configure() throws Exception {
                from("direct:start").routeId("start")
                        .to("direct:foo").to("log:foo").to("mock:result");

                from("direct:foo").routeId("foo")
                        .transform(constant("Bye World"));
            }
        };
    }

    @Override
    protected RouteBuilder createRouteBuilder() throws Exception {
        return new RouteBuilder() {
            @Override
            public void configure() throws Exception {
                from("direct:start").routeId("start")
                        .to("direct:foo").to("log:foo").to("mock:result");

                from("direct:foo").routeId("foo")
                        .transform(constant("Bye World"));
            }
        };
    }

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然后，您可以使用 Camel 中的 recommendations With 功能模拟单元测试中给定路由中的所有端点，如下所示：

使用 建议进行所有端点

    @Test
    public void testAdvisedMockEndpoints() throws Exception {
        // advice the start route using the inlined AdviceWith lambda style route builder
        // which has extended capabilities than the regular route builder
        AdviceWith.adviceWith(context, "start", a ->
        // mock all endpoints
        a.mockEndpoints());

        getMockEndpoint("mock:direct:start").expectedBodiesReceived("Hello World");
        getMockEndpoint("mock:direct:foo").expectedBodiesReceived("Hello World");
        getMockEndpoint("mock:log:foo").expectedBodiesReceived("Bye World");
        getMockEndpoint("mock:result").expectedBodiesReceived("Bye World");

        template.sendBody("direct:start", "Hello World");

        assertMockEndpointsSatisfied();

        // additional test to ensure correct endpoints in registry
        assertNotNull(context.hasEndpoint("direct:start"));
        assertNotNull(context.hasEndpoint("direct:foo"));
        assertNotNull(context.hasEndpoint("log:foo"));
        assertNotNull(context.hasEndpoint("mock:result"));
        // all the endpoints was mocked
        assertNotNull(context.hasEndpoint("mock:direct:start"));
        assertNotNull(context.hasEndpoint("mock:direct:foo"));
        assertNotNull(context.hasEndpoint("mock:log:foo"));
    }

    @Test
    public void testAdvisedMockEndpoints() throws Exception {
        // advice the start route using the inlined AdviceWith lambda style route builder
        // which has extended capabilities than the regular route builder
        AdviceWith.adviceWith(context, "start", a ->
        // mock all endpoints
        a.mockEndpoints());

        getMockEndpoint("mock:direct:start").expectedBodiesReceived("Hello World");
        getMockEndpoint("mock:direct:foo").expectedBodiesReceived("Hello World");
        getMockEndpoint("mock:log:foo").expectedBodiesReceived("Bye World");
        getMockEndpoint("mock:result").expectedBodiesReceived("Bye World");

        template.sendBody("direct:start", "Hello World");

        assertMockEndpointsSatisfied();

        // additional test to ensure correct endpoints in registry
        assertNotNull(context.hasEndpoint("direct:start"));
        assertNotNull(context.hasEndpoint("direct:foo"));
        assertNotNull(context.hasEndpoint("log:foo"));
        assertNotNull(context.hasEndpoint("mock:result"));
        // all the endpoints was mocked
        assertNotNull(context.hasEndpoint("mock:direct:start"));
        assertNotNull(context.hasEndpoint("mock:direct:foo"));
        assertNotNull(context.hasEndpoint("mock:log:foo"));
    }

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请注意，模拟端点被授予 URI mock:<endpoint>，如 mock:direct:foo。在 INFO 级别对被模拟的端点进行 Camel 日志：

INFO  Adviced endpoint [direct://foo] with mock endpoint [mock:direct:foo]

INFO  Adviced endpoint [direct://foo] with mock endpoint [mock:direct:foo]

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注意

模拟的端点没有参数
端点，这些端点会被模拟，其参数会剥离。例如，端点 log:foo?showAll=true 将被模拟到以下端点 mock:log:foo。请注意，删除了这些参数。

它还只能使用模式模拟某些端点。例如，模拟 您执行 的所有日志端点，如下所示：

建议 只使用一个模式模拟日志端点

    @Test
    public void testAdvisedMockEndpointsWithPattern() throws Exception {
        // advice the start route using the inlined AdviceWith lambda style route builder
        // which has extended capabilities than the regular route builder
        AdviceWith.adviceWith(context, "start", a ->
        // mock only log endpoints
        a.mockEndpoints("log*"));

        // now we can refer to log:foo as a mock and set our expectations
        getMockEndpoint("mock:log:foo").expectedBodiesReceived("Bye World");

        getMockEndpoint("mock:result").expectedBodiesReceived("Bye World");

        template.sendBody("direct:start", "Hello World");

        assertMockEndpointsSatisfied();

        // additional test to ensure correct endpoints in registry
        assertNotNull(context.hasEndpoint("direct:start"));
        assertNotNull(context.hasEndpoint("direct:foo"));
        assertNotNull(context.hasEndpoint("log:foo"));
        assertNotNull(context.hasEndpoint("mock:result"));
        // only the log:foo endpoint was mocked
        assertNotNull(context.hasEndpoint("mock:log:foo"));
        assertNull(context.hasEndpoint("mock:direct:start"));
        assertNull(context.hasEndpoint("mock:direct:foo"));
    }

    @Test
    public void testAdvisedMockEndpointsWithPattern() throws Exception {
        // advice the start route using the inlined AdviceWith lambda style route builder
        // which has extended capabilities than the regular route builder
        AdviceWith.adviceWith(context, "start", a ->
        // mock only log endpoints
        a.mockEndpoints("log*"));

        // now we can refer to log:foo as a mock and set our expectations
        getMockEndpoint("mock:log:foo").expectedBodiesReceived("Bye World");

        getMockEndpoint("mock:result").expectedBodiesReceived("Bye World");

        template.sendBody("direct:start", "Hello World");

        assertMockEndpointsSatisfied();

        // additional test to ensure correct endpoints in registry
        assertNotNull(context.hasEndpoint("direct:start"));
        assertNotNull(context.hasEndpoint("direct:foo"));
        assertNotNull(context.hasEndpoint("log:foo"));
        assertNotNull(context.hasEndpoint("mock:result"));
        // only the log:foo endpoint was mocked
        assertNotNull(context.hasEndpoint("mock:log:foo"));
        assertNull(context.hasEndpoint("mock:direct:start"));
        assertNull(context.hasEndpoint("mock:direct:foo"));
    }

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支持的模式可以是通配符或正则表达式。请参阅 Intercept 将其与 Camel 使用的匹配功能相同的匹配功能的更多详情。

注意

请记住，模拟端点会在消息到达模拟时复制消息。
这意味着 Camel 将使用更多内存。当您发送许多消息时，这可能不适用。

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37.9. 模拟现有端点

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