refactor respect interface test

test/job/adapters/slurm_test.rb

@@ -0,0 +1,17 @@
+require 'test_helper'
+
+class TestSlurm < Minitest::Test
+  include TestHelper
+
+  def slurm_instance(config = {})
+    OodCore::Job::Factory.build({ adapter: 'slurm' }.merge(config))
+  end
+
+  def test_submit_interface
+    slurm = slurm_instance
+
+    assert(slurm.respond_to?(:submit))
+    veryify_keywords(slurm, :submit, [:after, :afterok, :afternotok, :afterany])
+    verify_args(slurm, :submit, 1)
+  end
+end

test/test_helper.rb

@@ -0,0 +1,28 @@
+require 'ood_core'
+
+module TestHelper
+
+  # verify the keywords of an objects interface.
+  # Example: given the interface - def foo(bar: nil)
+  # veryify_keywords(object, :foo, [:bar])
+  # to verify that the method foo takes only one keyword :bar.
+  def veryify_keywords(object, method, keywords)
+    parameters = object.method(method.to_sym).parameters
+    actual_keywords = parameters.select do |key, _value|
+      key.to_sym == :key
+    end.map do |_key, value|
+      value
+    end.sort
+
+    assert_equal(keywords.sort, actual_keywords)
+  end
+
+  def verify_args(object, method, num_of_args)
+    parameters = object.method(method.to_sym).parameters
+    actual_num_of_args = parameters.select do |key, _value|
+      key.to_sym == :req || key.to_sym == :opt
+    end.count
+
+    assert_equal(actual_num_of_args, num_of_args)
+  end
+end