Fix: lists with duplicate entries in parameter values

If list parameter values contained duplicates, those got removed when
merging parameter values from different sources. This commit fixes that
behavor, so that duplcates that appear within the *same* list are
preserved.

wlauto/tests/test_config.py

@@ -22,7 +22,7 @@ from unittest import TestCase
 from nose.tools import assert_equal, assert_in, raises
 
 from wlauto.core.bootstrap import ConfigLoader
-from wlauto.core.agenda import AgendaWorkloadEntry, AgendaGlobalEntry
+from wlauto.core.agenda import AgendaWorkloadEntry, AgendaGlobalEntry, Agenda
 from wlauto.core.configuration import RunConfiguration
 from wlauto.exceptions import ConfigError
 
@@ -33,24 +33,35 @@ BAD_CONFIG_TEXT = """device = 'TEST
 device_config = 'TEST-CONFIG'"""
 
 
+LIST_PARAMS_AGENDA_TEXT = """
+config:
+    instrumentation: [list_params]
+    list_params:
+        param: [0.1, 0.1, 0.1]
+workloads:
+    - dhrystone
+"""
+
+
 class MockExtensionLoader(object):
 
     def __init__(self):
         self.aliases = {}
         self.global_param_aliases = {}
-        self.extensions = {}
+        self.extensions = {
+            'defaults_workload': DefaultsWorkload(),
+            'list_params': ListParamstrument(),
+        }
 
     def get_extension_class(self, name, kind=None):  # pylint: disable=unused-argument
-        if name == 'defaults_workload':
-            return DefaultsWorkload()
-        else:
-            return NamedMock(name)
+        return self.extensions.get(name, NamedMock(name))
 
     def resolve_alias(self, name):
         return name, {}
 
     def get_default_config(self, name):  # pylint: disable=unused-argument
-        return {}
+        ec = self.get_extension_class(name)
+        return {p.name: p.default for p in ec.parameters}
 
     def has_extension(self, name):
         return name in self.aliases or name in self.extensions
@@ -88,6 +99,14 @@ class DefaultsWorkload(object):
         self.parameters[0].default = [1, 2]
 
 
+class ListParamstrument(object):
+
+    def __init__(self):
+        self.name = 'list_params'
+        self.parameters = [NamedMock('param')]
+        self.parameters[0].default = []
+
+
 class ConfigLoaderTest(TestCase):
 
     def setUp(self):
@@ -142,6 +161,12 @@ class ConfigTest(TestCase):
         spec = self.config.workload_specs[0]
         assert_equal(spec.workload_parameters, {'param': [3]})
 
+    def test_exetension_params_lists(self):
+        a = Agenda(LIST_PARAMS_AGENDA_TEXT)
+        self.config.set_agenda(a)
+        self.config.finalize()
+        assert_equal(self.config.instrumentation['list_params']['param'], [0.1, 0.1, 0.1])
+
     def test_global_instrumentation(self):
         self.config.load_config({'instrumentation': ['global_instrument']})
         ws = AgendaWorkloadEntry(id='a', iterations=1, name='linpack', instrumentation=['local_instrument'])