diff --git a/tests/plugins/SpaceCadet/basic/basic.ino b/tests/plugins/SpaceCadet/basic/basic.ino
new file mode 100644
index 00000000..aba9a916
--- /dev/null
+++ b/tests/plugins/SpaceCadet/basic/basic.ino
@@ -0,0 +1,68 @@
+/* -*- mode: c++ -*-
+ * Copyright (C) 2020  Keyboard.io, Inc.
+ *
+ * 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, version 3.
+ *
+ * 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/>.
+ */
+
+#include <Kaleidoscope.h>
+#include <Kaleidoscope-SpaceCadet.h>
+
+#include "./common.h"
+
+// *INDENT-OFF*
+KEYMAPS(
+    [0] = KEYMAP_STACKED
+    (
+        Key_LeftShift, Key_RightShift, ___, ___, ___, ___, ___,
+        Key_A, Key_B, ___, ___, ___, ___, ___,
+        ___, ___, ___, ___, ___, ___,
+        ___, ___, ___, ___, ___, ___, ___,
+        ___, ___, ___, ___,
+        ___,
+
+        ___, ___, ___, ___, ___, ___, ___,
+        ___, ___, ___, ___, ___, ___, ___,
+        ___, ___, ___, ___, ___, ___,
+        ___, ___, ___, ___, ___, ___, ___,
+        ___, ___, ___, ___,
+        ___
+    ),
+)
+// *INDENT-ON*
+
+KALEIDOSCOPE_INIT_PLUGINS(SpaceCadet);
+
+void setup() {
+  Kaleidoscope.setup();
+
+  //Set the SpaceCadet map
+  //Setting is {KeyThatWasPressed, AlternativeKeyToSend, TimeoutInMS}
+  //Note: must end with the SPACECADET_MAP_END delimiter
+  static kaleidoscope::plugin::SpaceCadet::KeyBinding spacecadetmap[] = {
+    {Key_LeftShift, Key_X, 10},
+    {Key_RightShift, Key_Y, 0},
+    {Key_LeftGui, Key_LeftCurlyBracket, 10},
+    {Key_RightAlt, Key_RightCurlyBracket, 10},
+    {Key_LeftAlt, Key_RightCurlyBracket, 10},
+    {Key_LeftControl, Key_LeftBracket, 10},
+    {Key_RightControl, Key_RightBracket, 10},
+    SPACECADET_MAP_END
+  };
+  //Set the map.
+  SpaceCadet.map = spacecadetmap;
+  SpaceCadet.time_out = 20;
+}
+
+void loop() {
+  Kaleidoscope.loop();
+}
diff --git a/tests/plugins/SpaceCadet/basic/common.h b/tests/plugins/SpaceCadet/basic/common.h
new file mode 100644
index 00000000..dcfcc35b
--- /dev/null
+++ b/tests/plugins/SpaceCadet/basic/common.h
@@ -0,0 +1,27 @@
+// -*- mode: c++ -*-
+
+/* Kaleidoscope - Firmware for computer input devices
+ * Copyright (C) 2020  Keyboard.io, Inc.
+ *
+ * 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, version 3.
+ *
+ * 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 <cstdint>
+
+namespace kaleidoscope {
+namespace testing {
+
+}  // namespace testing
+}  // namespace kaleidoscope
diff --git a/tests/plugins/SpaceCadet/basic/sketch.json b/tests/plugins/SpaceCadet/basic/sketch.json
new file mode 100644
index 00000000..43dc4c7e
--- /dev/null
+++ b/tests/plugins/SpaceCadet/basic/sketch.json
@@ -0,0 +1,6 @@
+{
+  "cpu": {
+    "fqbn": "keyboardio:virtual:model01",
+    "port": ""
+  }
+}
\ No newline at end of file
diff --git a/tests/plugins/SpaceCadet/basic/test.ktest b/tests/plugins/SpaceCadet/basic/test.ktest
new file mode 100644
index 00000000..f3edaae8
--- /dev/null
+++ b/tests/plugins/SpaceCadet/basic/test.ktest
@@ -0,0 +1,125 @@
+VERSION 1
+
+KEYSWITCH LSHIFT    0 0
+KEYSWITCH RSHIFT    0 1
+KEYSWITCH A         1 0
+KEYSWITCH B         1 1
+
+# ==============================================================================
+NAME SpaceCadet tap
+
+RUN 5 ms
+
+PRESS LSHIFT
+RUN 5 ms
+RELEASE LSHIFT
+RUN 1 cycle
+EXPECT keyboard-report Key_X # Report should contain `X` (0x1B)
+EXPECT keyboard-report empty # Report should be empty
+RUN 5 ms
+
+# ==============================================================================
+NAME SpaceCadet hold
+
+RUN 5 ms
+
+PRESS LSHIFT
+RUN 1 cycle
+
+RUN 10 ms
+RUN 1 cycle
+EXPECT keyboard-report Key_LeftShift # Report should contain `shift` (0xE1)
+
+RUN 5 ms
+RELEASE LSHIFT
+RUN 1 cycle
+EXPECT keyboard-report empty # Report should be empty
+
+# ==============================================================================
+NAME SpaceCadet hold with global timeout
+
+RUN 5 ms
+
+PRESS RSHIFT
+RUN 1 cycle
+
+RUN 20 ms
+RUN 1 cycle
+EXPECT keyboard-report Key_RightShift # Report should contain `shift` (0xE5)
+
+RUN 5 ms
+RELEASE RSHIFT
+RUN 1 cycle
+EXPECT keyboard-report empty # Report should be empty
+
+# ==============================================================================
+NAME SpaceCadet interrupt
+
+RUN 5 ms
+PRESS LSHIFT
+RUN 1 cycle
+
+RUN 3 ms
+PRESS A
+RUN 1 cycle
+EXPECT keyboard-report Key_LeftShift # Report should contain `shift` (0xE1)
+EXPECT keyboard-report Key_LeftShift Key_A # Report should add `A` (0x04, 0xE1)
+
+RUN 3 ms
+RELEASE LSHIFT
+RUN 1 cycle
+EXPECT keyboard-report Key_A # Report should contain only `A` (0x04)
+
+RUN 3 ms
+RELEASE A
+RUN 1 cycle
+EXPECT keyboard-report empty # Report should be empty
+
+# ==============================================================================
+NAME SpaceCadet interrupt SpaceCadet with tap
+
+RUN 5 ms
+PRESS LSHIFT
+RUN 1 cycle
+
+RUN 3 ms
+PRESS RSHIFT
+RUN 1 cycle
+EXPECT keyboard-report Key_LeftShift # Report should contain `shift` (0xE1)
+
+RUN 3 ms
+RELEASE RSHIFT
+RUN 1 cycle
+EXPECT keyboard-report Key_LeftShift Key_Y # Report should add `Y` (0x1C)
+EXPECT keyboard-report Key_LeftShift # Report should contain `shift` (0xE1)
+
+RUN 3 ms
+RELEASE LSHIFT
+RUN 1 cycle
+EXPECT keyboard-report empty # Report should be empty
+
+# ==============================================================================
+NAME SpaceCadet interrupt SpaceCadet with hold
+
+RUN 5 ms
+PRESS LSHIFT
+RUN 1 cycle
+
+RUN 3 ms
+PRESS RSHIFT
+RUN 1 cycle
+EXPECT keyboard-report Key_LeftShift # Report should contain `shift` (0xE1)
+
+RUN 20 ms
+RUN 1 cycle
+EXPECT keyboard-report Key_LeftShift Key_RightShift # Report should contain both `shift` keycodes (0xE1, 0xE5)
+
+RUN 5 ms
+RELEASE LSHIFT
+RUN 1 cycle
+EXPECT keyboard-report Key_RightShift # Report should contain `shift` (0xE5)
+
+RUN 3 ms
+RELEASE RSHIFT
+RUN 1 cycle
+EXPECT keyboard-report empty # Report should be empty