[Declarative input step] groovy.lang.MissingMethodException: No signature of method: deploymentPipeline.input()

[doughgle]

Firstly, thanks for the efforts in creating and supporting JenkinsPipelineUnit!

Secondly, need some help...
We're using JenkinsPipelineUnit to test a declarative Jenkins library pipeline (complete pipeline as a library function).
In the first iteration, we want to test whether the input step was invoked or not, based on branch when clauses i.e.

• when branch is prd -> input step is invoked.
• when branch is dev -> input step is not invoked.

After introducing a new stage with a declarative input step, we see the error:

groovy.lang.MissingMethodException: No signature of method: deploymentPipeline.input() is applicable for argument types: (deploymentPipeline$_call_closure1$_closure5$_closure9$_closure16) values: [deploymentPipeline$_call_closure1$_closure5$_closure9$_closure16@6b8ba6e3]

The library pipeline structure looks like this:

def call(Map config) {
    pipeline {
        stages {
            stage('Prompt for One Time Password') {
                when {
                    branch 'prd'
                }
                input {
                    message 'Password:'
                    parameters {
                        password(name: 'PASSWORD', defaultValue: '********', description: 'password')
                    }
                }
                steps {
                    // login...
                }
            }
        }
    }
}

I'm afraid we weren't able to find any examples in the docs or issue history.

Q: How should we handle declarative input steps in a test case?

Complete stacktrace:

groovy.lang.MissingMethodException: No signature of method: deploymentPipeline.input() is applicable for argument types: (deploymentPipeline$_call_closure1$_closure5$_closure9$_closure16) values: [deploymentPipeline$_call_closure1$_closure5$_closure9$_closure16@6b8ba6e3]
Possible solutions: inspect(), inject(groovy.lang.Closure), wait(), run(), run(), any()
	at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
	at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
	at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
	at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
	at org.codehaus.groovy.reflection.CachedConstructor.invoke(CachedConstructor.java:83)
	at org.codehaus.groovy.runtime.callsite.ConstructorSite$ConstructorSiteNoUnwrapNoCoerce.callConstructor(ConstructorSite.java:105)
	at org.codehaus.groovy.runtime.callsite.AbstractCallSite.callConstructor(AbstractCallSite.java:263)
	at com.lesfurets.jenkins.unit.PipelineTestHelper$_closure4.doCall(PipelineTestHelper.groovy:227)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	at org.codehaus.groovy.reflection.CachedMethod.invoke(CachedMethod.java:93)
	at org.codehaus.groovy.runtime.metaclass.ClosureMetaMethod.invoke(ClosureMetaMethod.java:84)
	at groovy.lang.MetaClassImpl.invokeMissingMethod(MetaClassImpl.java:939)
	at groovy.lang.MetaClassImpl.invokeMissingMethod(MetaClassImpl.java:826)
	at groovy.lang.DelegatingMetaClass.invokeMissingMethod(DelegatingMetaClass.java:234)
	at groovy.lang.MetaClass$invokeMissingMethod$0.call(Unknown Source)
	at org.codehaus.groovy.runtime.callsite.CallSiteArray.defaultCall(CallSiteArray.java:48)
	at groovy.lang.MetaClass$invokeMissingMethod$0.call(Unknown Source)
	at com.lesfurets.jenkins.unit.PipelineTestHelper$_closure3.doCall(PipelineTestHelper.groovy:188)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	at org.codehaus.groovy.reflection.CachedMethod.invoke(CachedMethod.java:93)
	at org.codehaus.groovy.runtime.metaclass.ClosureMetaMethod.invoke(ClosureMetaMethod.java:84)
	at groovy.lang.ExpandoMetaClass.invokeMethod(ExpandoMetaClass.java:1123)
	at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:1022)
	at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:810)
	at groovy.lang.GroovyObjectSupport.invokeMethod(GroovyObjectSupport.java:46)
	at groovy.lang.Script.invokeMethod(Script.java:80)

[doughgle]

@nre-ableton, @stchar,
Can you share any advice on how to test with declarative input step?

[nre-ableton]

I'm pretty sure that you need to provide a mock for the input step. I'm wholly unfamiliar with declarative pipelines, though, so I have no idea how that would look like.

[doughgle]

Thanks @nre-ableton!

These simple mocks were good enough for our context:

        helper.registerAllowedMethod("input", [Closure.class], null)
        helper.registerAllowedMethod("message", [String.class], null)

[nre-ableton]

Glad to hear that you got it working! Poking around the code a bit, I guess we could add these mocks to DeclarativePipelineTest. However, at least you have a workaround for now.

[doughgle]

@nre-ableton Agreed. The null callback may be overly simplistic for the generic case, but it works for us.
The message string gets printed by default, which is good enough for our assertions.