Remove 'test_' prefix for all file names.

It's redundant.

irctest/server_tests/multi_prefix.py

@@ -0,0 +1,56 @@
+"""
+Tests multi-prefix.
+<http://ircv3.net/specs/extensions/multi-prefix-3.1.html>
+"""
+
+from irctest import cases
+from irctest.patma import ANYSTR
+
+
+class MultiPrefixTestCase(cases.BaseServerTestCase):
+    @cases.mark_capabilities("multi-prefix")
+    def testMultiPrefix(self):
+        """“When requested, the multi-prefix client capability will cause the
+        IRC server to send all possible prefixes which apply to a user in NAMES
+        and WHO output.
+
+        These prefixes MUST be in order of ‘rank’, from highest to lowest.
+        """
+        self.connectClient("foo", capabilities=["multi-prefix"])
+        self.joinChannel(1, "#chan")
+        self.sendLine(1, "MODE #chan +v foo")
+        self.getMessages(1)
+
+        # TODO(dan): Make sure +v is voice
+
+        self.sendLine(1, "NAMES #chan")
+        reply = self.getMessage(1)
+        self.assertMessageMatch(
+            reply,
+            command="353",
+            fail_msg="Expected NAMES response (353) with @+foo, got: {msg}",
+        )
+        self.assertMessageMatch(
+            reply,
+            command="353",
+            params=["foo", ANYSTR, "#chan", "@+foo"],
+            fail_msg="Expected NAMES response (353) with @+foo, got: {msg}",
+        )
+        self.getMessages(1)
+
+        self.sendLine(1, "WHO #chan")
+        msg = self.getMessage(1)
+        self.assertEqual(
+            msg.command, "352", msg, fail_msg="Expected WHO response (352), got: {msg}"
+        )
+        self.assertGreaterEqual(
+            len(msg.params),
+            8,
+            "Expected WHO response (352) with 8 params, got: {msg}".format(msg=msg),
+        )
+        self.assertTrue(
+            "@+" in msg.params[6],
+            'Expected WHO response (352) with "@+" in param 7, got: {msg}'.format(
+                msg=msg
+            ),
+        )