SEBA-282 xosgenx filtering by app or model;
provide a default argument class for XOSProcessor;
remove tabs;
rename unit tests missed by nose2

Change-Id: I07b782982b6733f8828b8a5a72807326f430b1a5
diff --git a/lib/xos-genx/xos-genx-tests/test_target.py b/lib/xos-genx/xos-genx-tests/test_target.py
new file mode 100644
index 0000000..d729be7
--- /dev/null
+++ b/lib/xos-genx/xos-genx-tests/test_target.py
@@ -0,0 +1,127 @@
+
+# Copyright 2017-present Open Networking Foundation
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+
+import unittest
+import os
+from xosgenx.generator import XOSProcessor, XOSProcessorArgs
+from helpers import XProtoTestHelpers, OUTPUT_DIR
+
+TEST_FILE = "test_file"
+
+TEST_OUTPUT = "Do re mi fa so la ti do"
+
+class XProtoTargetTests(unittest.TestCase):
+
+    def setUp(self):
+        test_file = open(os.path.join(OUTPUT_DIR, TEST_FILE), 'w')
+        test_file.write(TEST_OUTPUT)
+        test_file.close()
+
+    def test_file_methods(self):
+        target = XProtoTestHelpers.write_tmp_target(
+"""
+  {%% if file_exists("%s") %%}
+    {{ include_file("%s") }}
+  {%% endif %%}
+"""%(TEST_FILE, TEST_FILE)
+        )
+
+        args = XOSProcessorArgs()
+        args.inputs = ''
+        args.target = target
+        args.attic = OUTPUT_DIR
+        output = XOSProcessor.process(args)
+        self.assertIn(TEST_OUTPUT, output)
+
+    def test_xproto_lib(self):
+        target = XProtoTestHelpers.write_tmp_target(
+"""
+  {{ xproto_first_non_empty([None, None, None, None, None, None, "Eureka"]) }}
+""")
+        args = XOSProcessorArgs()
+        args.inputs = ''
+        args.target = target
+        output = XOSProcessor.process(args)
+        self.assertIn("Eureka", output)
+
+    def test_context(self):
+        target = XProtoTestHelpers.write_tmp_target(
+"""
+  {{ context.what }}
+""")
+        args = XOSProcessorArgs()
+        args.inputs = ''
+        args.target = target
+        args.kv='what:what is what'
+        output = XOSProcessor.process(args)
+        self.assertIn("what is what", output)
+
+    def test_singularize(self):
+        proto = \
+"""
+  message TestSingularize {
+      // The following field has an explicitly specified singular
+      required int many = 1 [singular = "one"];
+      // The following fields have automatically computed singulars
+      required int sheep = 2;
+      required int slices = 2;
+      required int networks = 2;
+      required int omf_friendlies = 2;
+  }
+"""
+
+        target = XProtoTestHelpers.write_tmp_target(
+"""
+{% for m in proto.messages.0.fields -%}
+{{ xproto_singularize(m) }},
+{%- endfor %}
+""")
+        args = XOSProcessorArgs()
+        args.inputs = proto
+        args.target = target
+        output = XOSProcessor.process(args)
+        self.assertEqual("one,sheep,slice,network,omf_friendly", output.lstrip().rstrip().rstrip(','))
+
+    def test_pluralize(self):
+        proto = \
+"""
+  message TestPluralize {
+      // The following field has an explicitly specified plural
+      required int anecdote = 1 [plural = "data"];
+      // The following fields have automatically computed plurals
+      required int sheep = 2;
+      required int slice = 2;
+      required int network = 2;
+      required int omf_friendly = 2;
+  }
+"""
+
+        target = XProtoTestHelpers.write_tmp_target(
+"""
+{% for m in proto.messages.0.fields -%}
+{{ xproto_pluralize(m) }},
+{%- endfor %}
+""")
+        args = XOSProcessorArgs()
+        args.inputs = proto
+        args.target = target
+        output = XOSProcessor.process(args)
+        self.assertEqual("data,sheep,slices,networks,omf_friendlies", output.lstrip().rstrip().rstrip(','))
+
+if __name__ == '__main__':
+    unittest.main()
+
+