| 5 | #include "fl/gfx/gfx.h" |
| 6 | |
| 7 | FL_TEST_FILE(FL_FILEPATH) { |
| 8 | |
| 9 | FL_TEST_CASE("drawLine horizontal and vertical lines") { |
| 10 | FL_SUBCASE("horizontal line at y=8") { |
| 11 | CRGB buffer[256] = {}; |
| 12 | fl::CanvasRGB canvas(buffer, 16, 16); |
| 13 | canvas.drawLine(CRGB(255, 0, 0), 2, 8, 13, 8); |
| 14 | |
| 15 | // Count non-zero pixels in row 8 |
| 16 | int non_zero = 0; |
| 17 | for (int x = 0; x < 16; ++x) { |
| 18 | if (buffer[8 * 16 + x].r > 0) non_zero++; |
| 19 | } |
| 20 | FL_CHECK(non_zero >= 10); // Should have at least 10 pixels lit |
| 21 | } |
| 22 | |
| 23 | FL_SUBCASE("vertical line at x=8") { |
| 24 | CRGB buffer[256] = {}; |
| 25 | fl::CanvasRGB canvas(buffer, 16, 16); |
| 26 | canvas.drawLine(CRGB(255, 0, 0), 8, 2, 8, 13); |
| 27 | |
| 28 | // Count non-zero pixels in column 8 |
| 29 | int non_zero = 0; |
| 30 | for (int y = 0; y < 16; ++y) { |
| 31 | if (buffer[y * 16 + 8].r > 0) non_zero++; |
| 32 | } |
| 33 | FL_CHECK(non_zero >= 10); // Should have at least 10 pixels lit |
| 34 | } |
| 35 | } |
| 36 | |
| 37 | FL_TEST_CASE("drawLine edge cases") { |
| 38 | FL_SUBCASE("zero-length line (no crash)") { |
| 39 | CRGB buffer[256] = {}; |
| 40 | fl::CanvasRGB canvas(buffer, 16, 16); |
| 41 | canvas.drawLine(CRGB(255, 0, 0), 5, 5, 5, 5); |
| 42 | // Should not crash |
| 43 | FL_CHECK(true); |
| 44 | } |
| 45 | |
| 46 | FL_SUBCASE("fully off-screen line (no crash)") { |
| 47 | CRGB buffer[256] = {}; |
| 48 | fl::CanvasRGB canvas(buffer, 16, 16); |
| 49 | canvas.drawLine(CRGB(255, 0, 0), -100, 8, -50, 8); |
| 50 | // Should not crash, all pixels should be black |
| 51 | FL_CHECK(true); |
| 52 | } |
| 53 | |
| 54 | FL_SUBCASE("partially clipped line") { |
| 55 | CRGB buffer[256] = {}; |
| 56 | fl::CanvasRGB canvas(buffer, 16, 16); |
| 57 | canvas.drawLine(CRGB(255, 0, 0), -2, 8, 5, 8); |
| 58 | // Count non-zero pixels in row 8 |
| 59 | int non_zero = 0; |
| 60 | for (int x = 0; x < 16; ++x) { |
| 61 | if (buffer[8 * 16 + x].r > 0) non_zero++; |
| 62 | } |
| 63 | FL_CHECK(non_zero >= 3); // Should have at least 3 pixels lit |
| 64 | } |