add test for issue 59

Author: horike37

lib/deploy/stepFunctions/compileIamRole.test.js

@@ -15,7 +15,11 @@ describe('#compileIamRole', () => {
     serverless.service.service = 'step-functions';
     serverless.service.provider.compiledCloudFormationTemplate = { Resources: {} };
     serverless.setProvider('aws', new AwsProvider(serverless));
-    serverlessStepFunctions = new ServerlessStepFunctions(serverless);
+    const options = {
+      stage: 'dev',
+      region: 'us-east-1',
+    };
+    serverlessStepFunctions = new ServerlessStepFunctions(serverless, options);
   });
 
   it('should do nothing when role property exists in all statmachine properties', () => {
@@ -38,6 +42,27 @@ describe('#compileIamRole', () => {
     ).to.deep.equal({});
   });
 
+  it('should replace [region] and [policyname] with corresponding values', () => {
+    serverless.service.stepFunctions = {
+      stateMachines: {
+        myStateMachine2: {
+          definition: 'definition',
+        },
+      },
+    };
+
+    serverlessStepFunctions.compileIamRole();
+    expect(serverlessStepFunctions.serverless.service
+      .provider.compiledCloudFormationTemplate.Resources.IamRoleStateMachineExecution
+      .Properties.AssumeRolePolicyDocument.Statement[0].Principal.Service)
+      .to.be.equal('states.us-east-1.amazonaws.com');
+
+    expect(serverlessStepFunctions.serverless.service
+      .provider.compiledCloudFormationTemplate.Resources.IamRoleStateMachineExecution
+      .Properties.Policies[0].PolicyName)
+      .to.be.equal('dev-us-east-1-step-functions-statemachine');
+  });
+
   it('should create corresponding resources when role property are not given', () => {
     serverless.service.stepFunctions = {
       stateMachines: {
@@ -50,7 +75,6 @@ describe('#compileIamRole', () => {
         },
       },
     };
-
     serverlessStepFunctions.compileIamRole();
     expect(serverlessStepFunctions.serverless.service
       .provider.compiledCloudFormationTemplate.Resources.IamRoleStateMachineExecution.Type