KotlinTest 的 BehaviorSpec "No runnable methods"与 SpringJUnit4ClassRunner

Question

我写了以下测试:

@RunWith(SpringJUnit4ClassRunner::class)
class KotlinTest : BehaviorSpec() {
    init {
        given("a stack") {
            val stack = Stack<String>()
            `when`("an item is pushed") {
                stack.push("kotlin")
                then("the stack should not be empty") {
                    stack.isEmpty() shouldBe true
                }
            }
            `when`("the stack is popped") {
                stack.pop()
                then("it should be empty") {
                    stack.isEmpty() shouldBe false
                }
            }
        }
    }
}

当我尝试运行它时，出现以下错误:

java.lang.Exception: No runnable methods

at org.junit.runners.BlockJUnit4ClassRunner.validateInstanceMethods(BlockJUnit4ClassRunner.java:191)
at org.junit.runners.BlockJUnit4ClassRunner.collectInitializationErrors(BlockJUnit4ClassRunner.java:128)
at org.junit.runners.ParentRunner.validate(ParentRunner.java:416)
at org.junit.runners.ParentRunner.<init>(ParentRunner.java:84)
at org.junit.runners.BlockJUnit4ClassRunner.<init>(BlockJUnit4ClassRunner.java:65)
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.<init>(SpringJUnit4ClassRunner.java:138)

我知道问题在于我正在尝试使用带有 Spring 的 KotlinTest 编写测试，但我该怎么做呢？我应该使用什么运行者？

示例测试不需要spring，这只是我为了隔离问题而写的一个简单示例

Answer 1

您在构造函数中编写了测试。测试应该用 @Test 的函数编写。注解。您的代码更不等同于:

@RunWith(SpringJUnit4ClassRunner.class)
public final class JavaTest extends BehaviorSpec {

    public JavaTest() {
         // given stack, when item is pushed, ...
    }
}

你想要的是

@RunWith(SpringJUnit4ClassRunner.class)
public final class JavaTest extends BehaviorSpec {

    @Test
    public void testName() {
        // given stack, when item is pushed, ...
    }
}

为此，您需要使用 fun定义函数的关键字。结果应该看起来不像这样:

@RunWith(SpringJUnit4ClassRunner::class)
class KotlinTest : BehaviorSpec() {

    @Test fun testName() {
        given stack, when item is pushed, ...
    }
}