cheatsheet.adoc

Spock – A Logical Way of Testing – Cheatsheet

Specifications

class Spec extends Specification {
  def setupSpec() {}   // before the 1st feature
  def setup() {}       // before each feature
  def "feature"() {
    // blocks go here
  }
  def cleanup() {}     // after each feature
  def cleanupSpec() {} // after the last feature
}

Blocks

Mocking

Subscriber subscriber = Mock()
<cardinality> * <target>.<method>(<argument>)
|               |        |        |
|               |        |        "hello"           // exactly this
|               |        |        !"hello"          // not this
|               |        |        _                 // anything
|               |        |        *_                // any argument list
|               |        |        !null             // not null
|               |        |        _ as String       // any argument list
|               |        |        endsWith("lo")    // anything matching a Hamcrest matcher
|               |        |        { it.size() > 3
|               |        |          it.size() < 6 } // anything passing each line as assert
|               |        |
|               |        receive // specific method
|               |        /r.*e/  // any matching method
|               |        _       // any method
|               |
|               subscriber // specific mock
|               _          // any mock
|
1      // once
0      // never
(1..3) // 1-3 times
(1.._) // at least once
(_..3) // up to 3 times
_      // any times

Stubbing

Subscriber subscriber = Stub()
              <target>.<method>(<argument>) >> <response>
                                               |
                                        "hello" // exactly this
 { args -> args[0].size() > 3 ? "ok" : "fail" } // compute from all args array
   { String m -> m.size() > 3 ? "ok" : "fail" } // same, but typed arguments
            { throw new IOExcpetion("Mocked") } // throw an exception
                                              _ // default response