imported from "final" folder

.pio/libdeps/esp01_1m/FastLED/tests/test_lut.cpp

@@ -0,0 +1,43 @@
+
+// g++ --std=c++11 test.cpp
+
+#include "test.h"
+
+#include "test.h"
+#include "lib8tion/intmap.h"
+#include "fl/lut.h"
+
+
+using namespace fl;
+
+TEST_CASE("LUT interp8") {
+    LUT<uint16_t> lut(2);
+    uint16_t* data = lut.getDataMutable();
+    data[0] = 0;
+    data[1] = 255;
+    CHECK_EQ(lut.interp8(0), 0);
+    CHECK_EQ(lut.interp8(255), 255);
+    CHECK_EQ(lut.interp8(128), 128);
+
+    // Check the LUT interpolation for all values.
+    for (uint16_t i = 0; i < 256; i++) {
+        uint16_t expected = (i * 255) / 255;
+        CHECK_EQ(lut.interp8(i), expected);
+    }
+}
+
+TEST_CASE("LUT interp16") {
+    LUT<uint16_t> lut(2);
+    uint16_t* data = lut.getDataMutable();
+    data[0] = 0;
+    data[1] = 255;
+    CHECK_EQ(lut.interp16(0), 0);
+    CHECK_EQ(lut.interp16(0xffff), 255);
+    CHECK_EQ(lut.interp16(0xffff / 2), 127);
+
+    // Check the LUT interpolation for all values.
+    for (int i = 0; i < 256; i++) {
+        uint16_t alpha16 = map8_to_16(i);
+        CHECK_EQ(i, lut.interp16(alpha16));
+    }
+}