Add generic and tag constraints to maas provider

juju/providers/maas/tests/test_maas.py

Index: juju/providers/maas/tests/test_maas.py
=== modified file 'juju/providers/maas/tests/test_maas.py'
--- juju/providers/maas/tests/test_maas.py	2012-06-06 19:08:04 +0000
+++ juju/providers/maas/tests/test_maas.py	2012-09-25 08:58:47 +0000
@@ -336,3 +336,35 @@
         self.assertIs(None, guinness)
         name = client.post.params_used.get("name")
         self.assertEqual("zaphod", name)
+
+    def test_acquire_node_handles_arch_constraint(self):
+        client = self.set_up_client_with_fake()
+        constraints = {"arch": "i386"}
+        client.acquire_node(constraints)
+
+        arch = client.post.params_used.get("arch")
+        self.assertEqual("i386", arch)
+
+    def test_acquire_node_handles_cpu_constraint(self):
+        client = self.set_up_client_with_fake()
+        constraints = {"cpu": 2}
+        client.acquire_node(constraints)
+
+        cpu_count = client.post.params_used.get("cpu_count")
+        self.assertEqual("2", cpu_count)
+
+    def test_acquire_node_handles_mem_constraint(self):
+        client = self.set_up_client_with_fake()
+        constraints = {"mem": 2048}
+        client.acquire_node(constraints)
+
+        mem = client.post.params_used.get("mem")
+        self.assertEqual("2048", mem)
+
+    def test_acquire_node_handles_arbitrary_tag_query(self):
+        client = self.set_up_client_with_fake()
+        constraints = {"maas-tags": "red&!white|blue"}
+        client.acquire_node(constraints)
+
+        tags = client.post.params_used.get("tags")
+        self.assertEqual("red&!white|blue", tags)