Add unit tests for NAMESPACE parsing, CREATE serialisation, fix an error.

test/engine/imap/command/imap-create-command-test.vala

@@ -0,0 +1,29 @@
+/*
+ * Copyright 2017 Michael Gratton <mike@vee.net>
+ *
+ * This software is licensed under the GNU Lesser General Public License
+ * (version 2.1 or later). See the COPYING file in this distribution.
+ */
+
+class Geary.Imap.CreateCommandTest : Gee.TestCase {
+
+
+    public CreateCommandTest() {
+        base("Geary.Imap.CreateCommandTest");
+        add_test("test_basic_create", test_basic_create);
+        add_test("test_special_use", test_special_use);
+    }
+
+    public void test_basic_create() {
+        assert(new CreateCommand(new MailboxSpecifier("owatagusiam/")).to_string() ==
+               "---- create owatagusiam/");
+    }
+
+    public void test_special_use() {
+        assert(new CreateCommand.special_use(
+                   new MailboxSpecifier("Everything"),
+                   SpecialFolderType.ALL_MAIL
+                   ).to_string() == "---- create Everything (use (\\All))");
+    }
+
+}