tests: Add a failing testcase for #951

This adds a test to check that `Layer.isActive(0)` should return true, without
explicitly activating layer 0. At the moment, this is not the case, and the test
will fail.

Signed-off-by: Gergely Nagy <algernon@keyboard.io>

tests/issues/951/sketch.ino

@@ -0,0 +1,45 @@
+/* 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/>.
+ */
+
+#include "Kaleidoscope.h"
+
+// *INDENT-OFF*
+KEYMAPS(
+  [0] = KEYMAP_STACKED
+  (___,           Key_1, Key_2, Key_3, Key_4, Key_5, ___,
+   Key_Backtick,  Key_Q, Key_W, Key_E, Key_R, Key_T, Key_Tab,
+   Key_PageUp,    Key_A, Key_S, Key_D, Key_F, Key_G,
+   Key_PageDown,  Key_Z, Key_X, Key_C, Key_V, Key_B, Key_Escape,
+   Key_LeftControl, Key_Backspace, Key_LeftGui, Key_LeftShift,
+   ___,
+
+   ___,           Key_6, Key_7, Key_8,     Key_9,         Key_0,         ___,
+   Key_Enter,     Key_Y, Key_U, Key_I,     Key_O,         Key_P,         Key_Equals,
+                  Key_H, Key_J, Key_K,     Key_L,         Key_Semicolon, Key_Quote,
+   Key_RightAlt,  Key_N, Key_M, Key_Comma, Key_Period,    Key_Slash,     Key_Minus,
+   Key_RightShift, Key_LeftAlt, Key_Spacebar, Key_RightControl,
+   ___)
+)
+
+// *INDENT-ON*
+
+void setup() {
+  Kaleidoscope.setup();
+}
+
+void loop() {
+  Kaleidoscope.loop();
+}

tests/issues/951/test/testcase.cpp

@@ -0,0 +1,39 @@
+/* -*- 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 "testing/fix-macros.h"
+
+#include "testing/setup-googletest.h"
+
+SETUP_GOOGLETEST();
+
+namespace kaleidoscope {
+namespace testing {
+namespace {
+
+using ::testing::IsEmpty;
+
+class Issue951: public VirtualDeviceTest {};
+
+TEST_F(Issue951, InitialLayerState) {
+  EXPECT_THAT(Layer.isActive(0), true)
+      << "Layer 0 should be active when the keyboard starts up.";
+}
+
+}  // namespace
+}  // namespace testing
+}  // namespace kaleidoscope