diff --git a/tests/call_function_test.py b/tests/call_function_test.py
index dc9a2298..ce434b31 100644
--- a/tests/call_function_test.py
+++ b/tests/call_function_test.py
@@ -119,7 +119,7 @@ class CallFunctionTest(testlib.RouterMixin, testlib.TestCase):
                           lambda: recv.get().unpickle())
 
 
-class ChainTest(testlib.RouterMixin, testlib.TestCase):
+class CallChainTest(testlib.RouterMixin, testlib.TestCase):
     # Verify mitogen_chain functionality.
     klass = mitogen.parent.CallChain
 
diff --git a/tests/data/stubs/README.md b/tests/data/stubs/README.md
new file mode 100644
index 00000000..3f9af3c8
--- /dev/null
+++ b/tests/data/stubs/README.md
@@ -0,0 +1,5 @@
+
+# stubs/
+
+Dummy implementations of various third party tools that just spawn local Python
+interpreters. Used to roughly test the tools' associated Mitogen classes.
diff --git a/tests/data/stubs/docker.py b/tests/data/stubs/docker.py
new file mode 100755
index 00000000..341cc818
--- /dev/null
+++ b/tests/data/stubs/docker.py
@@ -0,0 +1,7 @@
+#!/usr/bin/env python
+
+import sys
+import os
+
+os.environ['ORIGINAL_ARGV'] = repr(sys.argv)
+os.execv(sys.executable, sys.argv[sys.argv.index('-c') - 1:])
diff --git a/tests/data/fake_lxc.py b/tests/data/stubs/lxc-attach.py
similarity index 100%
rename from tests/data/fake_lxc.py
rename to tests/data/stubs/lxc-attach.py
diff --git a/tests/data/fake_lxc_attach.py b/tests/data/stubs/lxc.py
similarity index 100%
rename from tests/data/fake_lxc_attach.py
rename to tests/data/stubs/lxc.py
diff --git a/tests/data/fakessh.py b/tests/data/stubs/ssh.py
similarity index 100%
rename from tests/data/fakessh.py
rename to tests/data/stubs/ssh.py
diff --git a/tests/docker_test.py b/tests/docker_test.py
new file mode 100644
index 00000000..33ead10c
--- /dev/null
+++ b/tests/docker_test.py
@@ -0,0 +1,28 @@
+import os
+
+import mitogen
+
+import unittest2
+
+import testlib
+
+
+class ConstructorTest(testlib.RouterMixin, unittest2.TestCase):
+    def test_okay(self):
+        docker_path = testlib.data_path('stubs/docker.py')
+        context = self.router.docker(
+            container='container_name',
+            docker_path=docker_path,
+        )
+        stream = self.router.stream_by_id(context.context_id)
+
+        argv = eval(context.call(os.getenv, 'ORIGINAL_ARGV'))
+        self.assertEquals(argv[0], docker_path)
+        self.assertEquals(argv[1], 'exec')
+        self.assertEquals(argv[2], '--interactive')
+        self.assertEquals(argv[3], 'container_name')
+        self.assertEquals(argv[4], stream.python_path)
+
+
+if __name__ == '__main__':
+    unittest2.main()
diff --git a/tests/lxc_test.py b/tests/lxc_test.py
index a30cd186..3168aad2 100644
--- a/tests/lxc_test.py
+++ b/tests/lxc_test.py
@@ -11,9 +11,9 @@ def has_subseq(seq, subseq):
     return any(seq[x:x+len(subseq)] == subseq for x in range(0, len(seq)))
 
 
-class FakeLxcAttachTest(testlib.RouterMixin, unittest2.TestCase):
+class ConstructorTest(testlib.RouterMixin, unittest2.TestCase):
     def test_okay(self):
-        lxc_attach_path = testlib.data_path('fake_lxc_attach.py')
+        lxc_attach_path = testlib.data_path('stubs/lxc-attach.py')
         context = self.router.lxc(
             container='container_name',
             lxc_attach_path=lxc_attach_path,
diff --git a/tests/lxd_test.py b/tests/lxd_test.py
index 9c2397a2..41e9df15 100644
--- a/tests/lxd_test.py
+++ b/tests/lxd_test.py
@@ -7,9 +7,9 @@ import unittest2
 import testlib
 
 
-class FakeLxcTest(testlib.RouterMixin, unittest2.TestCase):
+class ConstructorTest(testlib.RouterMixin, unittest2.TestCase):
     def test_okay(self):
-        lxc_path = testlib.data_path('fake_lxc.py')
+        lxc_path = testlib.data_path('stubs/lxc.py')
         context = self.router.lxd(
             container='container_name',
             lxc_path=lxc_path,
diff --git a/tests/ssh_test.py b/tests/ssh_test.py
index efca057d..edfe45dc 100644
--- a/tests/ssh_test.py
+++ b/tests/ssh_test.py
@@ -11,12 +11,12 @@ import testlib
 import plain_old_module
 
 
-class FakeSshTest(testlib.RouterMixin, unittest2.TestCase):
+class ConstructorTest(testlib.RouterMixin, unittest2.TestCase):
     def test_okay(self):
         context = self.router.ssh(
             hostname='hostname',
             username='mitogen__has_sudo',
-            ssh_path=testlib.data_path('fakessh.py'),
+            ssh_path=testlib.data_path('stubs/ssh.py'),
         )
         #context.call(mitogen.utils.log_to_file, '/tmp/log')
         #context.call(mitogen.utils.disable_site_packages)