diff --git a/bin/qmk b/bin/qmk
index 3c00a675e..1aa16e17d 100755
--- a/bin/qmk
+++ b/bin/qmk
@@ -94,4 +94,10 @@ else:
         exit(1)
 
 if __name__ == '__main__':
-    milc.cli()
+    return_code = milc.cli()
+    if return_code is False:
+        exit(1)
+    elif return_code is not True and isinstance(return_code, int) and return_code < 256:
+        exit(return_code)
+    else:
+        exit(0)
diff --git a/keyboards/handwired/onekey/pytest/config.h b/keyboards/handwired/onekey/pytest/config.h
new file mode 100644
index 000000000..f6bedcfe6
--- /dev/null
+++ b/keyboards/handwired/onekey/pytest/config.h
@@ -0,0 +1,23 @@
+/* Copyright 2019
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#pragma once
+
+#include "config_common.h"
+
+#define MATRIX_COL_PINS { A3 }
+#define MATRIX_ROW_PINS { A2 }
+#define UNUSED_PINS
diff --git a/keyboards/handwired/onekey/pytest/readme.md b/keyboards/handwired/onekey/pytest/readme.md
new file mode 100644
index 000000000..dbbd991f1
--- /dev/null
+++ b/keyboards/handwired/onekey/pytest/readme.md
@@ -0,0 +1,3 @@
+# PyTest onekey
+
+This is used by the python test framework. It's probably not useful otherwise.
diff --git a/keyboards/handwired/onekey/pytest/rules.mk b/keyboards/handwired/onekey/pytest/rules.mk
new file mode 100644
index 000000000..b17a3d031
--- /dev/null
+++ b/keyboards/handwired/onekey/pytest/rules.mk
@@ -0,0 +1,2 @@
+# MCU name
+MCU = STM32F303
diff --git a/keyboards/handwired/onekey/pytest/templates/keymap.c b/keyboards/handwired/onekey/pytest/templates/keymap.c
new file mode 100644
index 000000000..d355210c4
--- /dev/null
+++ b/keyboards/handwired/onekey/pytest/templates/keymap.c
@@ -0,0 +1 @@
+const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {__KEYMAP_GOES_HERE__};
diff --git a/lib/python/milc.py b/lib/python/milc.py
index 6e82edf8b..c62c1b166 100644
--- a/lib/python/milc.py
+++ b/lib/python/milc.py
@@ -534,8 +534,7 @@ class MILC(object):
         if not self._inside_context_manager:
             # If they didn't use the context manager use it ourselves
             with self:
-                self.__call__()
-                return
+                return self.__call__()
 
         if not self._entrypoint:
             raise RuntimeError('No entrypoint provided!')
diff --git a/lib/python/qmk/cli/doctor.py b/lib/python/qmk/cli/doctor.py
index 9ce765a4b..c5a144363 100755
--- a/lib/python/qmk/cli/doctor.py
+++ b/lib/python/qmk/cli/doctor.py
@@ -2,9 +2,11 @@
 
 Check up for QMK environment.
 """
-import shutil
-import platform
 import os
+import platform
+import shutil
+import subprocess
+from glob import glob
 
 from milc import cli
 
@@ -16,32 +18,44 @@ def main(cli):
     This is currently very simple, it just checks that all the expected binaries are on your system.
 
     TODO(unclaimed):
-        * [ ] Run the binaries to make sure they work
         * [ ] Compile a trivial program with each compiler
         * [ ] Check for udev entries on linux
     """
 
     binaries = ['dfu-programmer', 'avrdude', 'dfu-util', 'avr-gcc', 'arm-none-eabi-gcc']
+    binaries += glob('bin/qmk-*')
 
-    cli.log.info('QMK Doctor is Checking your environment')
+    cli.log.info('QMK Doctor is checking your environment')
 
     ok = True
     for binary in binaries:
         res = shutil.which(binary)
         if res is None:
-            cli.log.error('{fg_red}QMK can\'t find ' + binary + ' in your path')
+            cli.log.error("{fg_red}QMK can't find %s in your path", binary)
             ok = False
+        else:
+            try:
+                subprocess.run([binary, '--version'], stdout=subprocess.PIPE, stderr=subprocess.PIPE, timeout=5, check=True)
+            except subprocess.CalledProcessError:
+                cli.log.error("{fg_red}Can't run `%s --version`", binary)
+                ok = False
 
     OS = platform.system()
     if OS == "Darwin":
         cli.log.info("Detected {fg_cyan}macOS")
     elif OS == "Linux":
         cli.log.info("Detected {fg_cyan}linux")
-        test = 'systemctl list-unit-files | grep enabled | grep -i ModemManager'
-        if os.system(test) == 0:
-            cli.log.warn("{bg_yellow}Detected modem manager. Please disable it if you are using Pro Micros")
+        if shutil.which('systemctl'):
+            test = 'systemctl list-unit-files | grep enabled | grep -i ModemManager'
+            if os.system(test) == 0:
+                cli.log.warn("{bg_yellow}Detected modem manager. Please disable it if you are using Pro Micros")
+        else:
+            cli.log.warn("Can't find systemctl to check for ModemManager.")
     else:
         cli.log.info("Assuming {fg_cyan}Windows")
 
     if ok:
         cli.log.info('{fg_green}QMK is ready to go')
+    else:
+        cli.log.info('{fg_yellow}Problems detected, please fix these problems before proceeding.')
+        # FIXME(skullydazed): Link to a document about troubleshooting, or discord or something
diff --git a/lib/python/qmk/cli/nose2.py b/lib/python/qmk/cli/nose2.py
new file mode 100644
index 000000000..c6c9c67b3
--- /dev/null
+++ b/lib/python/qmk/cli/nose2.py
@@ -0,0 +1,18 @@
+"""QMK Python Unit Tests
+
+QMK script to run unit and integration tests against our python code.
+"""
+from milc import cli
+
+
+@cli.entrypoint('QMK Python Unit Tests')
+def main(cli):
+    """Use nose2 to run unittests
+    """
+    try:
+        import nose2
+    except ImportError:
+        cli.log.error('Could not import nose2! Please install it with {fg_cyan}pip3 install nose2')
+        return False
+
+    nose2.discover()
diff --git a/lib/python/qmk/tests/__init__.py b/lib/python/qmk/tests/__init__.py
new file mode 100644
index 000000000..e69de29bb
diff --git a/lib/python/qmk/tests/attrdict.py b/lib/python/qmk/tests/attrdict.py
new file mode 100644
index 000000000..a2584b923
--- /dev/null
+++ b/lib/python/qmk/tests/attrdict.py
@@ -0,0 +1,8 @@
+class AttrDict(dict):
+    """A dictionary that can be accessed by attributes.
+
+    This should only be used to mock objects for unit testing. Please do not use this outside of qmk.tests.
+    """
+    def __init__(self, *args, **kwargs):
+        super(AttrDict, self).__init__(*args, **kwargs)
+        self.__dict__ = self
diff --git a/lib/python/qmk/tests/onekey_export.json b/lib/python/qmk/tests/onekey_export.json
new file mode 100644
index 000000000..95f0a980f
--- /dev/null
+++ b/lib/python/qmk/tests/onekey_export.json
@@ -0,0 +1,6 @@
+{
+    "keyboard":"handwired/onekey/pytest",
+    "keymap":"pytest_unittest",
+    "layout":"LAYOUT",
+    "layers":[["KC_A"]]
+}
diff --git a/lib/python/qmk/tests/test_qmk_errors.py b/lib/python/qmk/tests/test_qmk_errors.py
new file mode 100644
index 000000000..3f6b56713
--- /dev/null
+++ b/lib/python/qmk/tests/test_qmk_errors.py
@@ -0,0 +1,7 @@
+from qmk.errors import NoSuchKeyboardError
+
+def test_NoSuchKeyboardError():
+    try:
+        raise(NoSuchKeyboardError("test message"))
+    except NoSuchKeyboardError as e:
+        assert e.message == 'test message'
diff --git a/lib/python/qmk/tests/test_qmk_keymap.py b/lib/python/qmk/tests/test_qmk_keymap.py
new file mode 100644
index 000000000..6a565ee90
--- /dev/null
+++ b/lib/python/qmk/tests/test_qmk_keymap.py
@@ -0,0 +1,18 @@
+import qmk.keymap
+
+def test_template_onekey_proton_c():
+    templ = qmk.keymap.template('handwired/onekey/proton_c')
+    assert templ == qmk.keymap.DEFAULT_KEYMAP_C
+
+
+def test_template_onekey_pytest():
+    templ = qmk.keymap.template('handwired/onekey/pytest')
+    assert templ == 'const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {__KEYMAP_GOES_HERE__};\n'
+
+
+def test_generate_onekey_pytest():
+    templ = qmk.keymap.generate('handwired/onekey/pytest', 'LAYOUT', [['KC_A']])
+    assert templ == 'const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {	[0] = LAYOUT(KC_A)};\n'
+
+
+# FIXME(skullydazed): Add a test for qmk.keymap.write that mocks up an FD.
diff --git a/lib/python/qmk/tests/test_qmk_path.py b/lib/python/qmk/tests/test_qmk_path.py
new file mode 100644
index 000000000..23816be7e
--- /dev/null
+++ b/lib/python/qmk/tests/test_qmk_path.py
@@ -0,0 +1,12 @@
+import os
+
+import qmk.path
+
+def test_keymap_onekey_pytest():
+    path = qmk.path.keymap('handwired/onekey/pytest')
+    assert path == 'keyboards/handwired/onekey/keymaps'
+
+
+def test_normpath():
+    path = qmk.path.normpath('lib/python')
+    assert path == os.environ['ORIG_CWD'] + '/lib/python'
diff --git a/nose2.cfg b/nose2.cfg
new file mode 100644
index 000000000..136354553
--- /dev/null
+++ b/nose2.cfg
@@ -0,0 +1,2 @@
+[unittest]
+start-dir = lib/python/qmk/tests