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-rw-r--r--quantum/encoder/tests/encoder_tests.cpp144
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diff --git a/quantum/encoder/tests/encoder_tests.cpp b/quantum/encoder/tests/encoder_tests.cpp
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+/* Copyright 2021 Balz Guenat
+ *
+ * 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/>.
+ */
+
+#include "gtest/gtest.h"
+#include "gmock/gmock.h"
+#include <vector>
+#include <algorithm>
+#include <stdio.h>
+
+extern "C" {
+#include "encoder.h"
+#include "encoder/tests/mock.h"
+}
+
+struct update {
+ int8_t index;
+ bool clockwise;
+};
+
+uint8_t uidx = 0;
+update updates[32];
+
+bool encoder_update_kb(uint8_t index, bool clockwise) {
+ updates[uidx % 32] = {index, clockwise};
+ uidx++;
+ return true;
+}
+
+bool setAndRead(pin_t pin, bool val) {
+ setPin(pin, val);
+ return encoder_read();
+}
+
+class EncoderTest : public ::testing::Test {};
+
+TEST_F(EncoderTest, TestInit) {
+ uidx = 0;
+ encoder_init();
+ EXPECT_EQ(pinIsInputHigh[0], true);
+ EXPECT_EQ(pinIsInputHigh[1], true);
+ EXPECT_EQ(uidx, 0);
+}
+
+TEST_F(EncoderTest, TestOneClockwise) {
+ uidx = 0;
+ encoder_init();
+ // send 4 pulses. with resolution 4, that's one step and we should get 1 update.
+ setAndRead(0, false);
+ setAndRead(1, false);
+ setAndRead(0, true);
+ setAndRead(1, true);
+
+ EXPECT_EQ(uidx, 1);
+ EXPECT_EQ(updates[0].index, 0);
+ EXPECT_EQ(updates[0].clockwise, true);
+}
+
+TEST_F(EncoderTest, TestOneCounterClockwise) {
+ uidx = 0;
+ encoder_init();
+ setAndRead(1, false);
+ setAndRead(0, false);
+ setAndRead(1, true);
+ setAndRead(0, true);
+
+ EXPECT_EQ(uidx, 1);
+ EXPECT_EQ(updates[0].index, 0);
+ EXPECT_EQ(updates[0].clockwise, false);
+}
+
+TEST_F(EncoderTest, TestTwoClockwiseOneCC) {
+ uidx = 0;
+ encoder_init();
+ setAndRead(0, false);
+ setAndRead(1, false);
+ setAndRead(0, true);
+ setAndRead(1, true);
+ setAndRead(0, false);
+ setAndRead(1, false);
+ setAndRead(0, true);
+ setAndRead(1, true);
+ setAndRead(1, false);
+ setAndRead(0, false);
+ setAndRead(1, true);
+ setAndRead(0, true);
+
+ EXPECT_EQ(uidx, 3);
+ EXPECT_EQ(updates[0].index, 0);
+ EXPECT_EQ(updates[0].clockwise, true);
+ EXPECT_EQ(updates[1].index, 0);
+ EXPECT_EQ(updates[1].clockwise, true);
+ EXPECT_EQ(updates[2].index, 0);
+ EXPECT_EQ(updates[2].clockwise, false);
+}
+
+TEST_F(EncoderTest, TestNoEarly) {
+ uidx = 0;
+ encoder_init();
+ // send 3 pulses. with resolution 4, that's not enough for a step.
+ setAndRead(0, false);
+ setAndRead(1, false);
+ setAndRead(0, true);
+ EXPECT_EQ(uidx, 0);
+ // now send last pulse
+ setAndRead(1, true);
+ EXPECT_EQ(uidx, 1);
+ EXPECT_EQ(updates[0].index, 0);
+ EXPECT_EQ(updates[0].clockwise, true);
+}
+
+TEST_F(EncoderTest, TestHalfway) {
+ uidx = 0;
+ encoder_init();
+ // go halfway
+ setAndRead(0, false);
+ setAndRead(1, false);
+ EXPECT_EQ(uidx, 0);
+ // back off
+ setAndRead(1, true);
+ setAndRead(0, true);
+ EXPECT_EQ(uidx, 0);
+ // go all the way
+ setAndRead(0, false);
+ setAndRead(1, false);
+ setAndRead(0, true);
+ setAndRead(1, true);
+ // should result in 1 update
+ EXPECT_EQ(uidx, 1);
+ EXPECT_EQ(updates[0].index, 0);
+ EXPECT_EQ(updates[0].clockwise, true);
+}