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tests: Add simple image_write_test smoke test

This commit is contained in:
Fabian Giesen 2019-02-23 05:18:14 -08:00
parent 980add9725
commit e0ee0de26c
2 changed files with 53 additions and 0 deletions
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3
tests/Makefile
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@ -2,6 +2,9 @@ INCLUDES = -I..
CFLAGS = -Wno-pointer-to-int-cast -Wno-int-to-pointer-cast -DSTB_DIVIDE_TEST
CPPFLAGS = -Wno-write-strings -DSTB_DIVIDE_TEST
#CFLAGS += -O -fsanitize=address
all:
$(CC) $(INCLUDES) $(CFLAGS) ../stb_vorbis.c test_c_compilation.c test_c_lexer.c test_dxt.c test_easyfont.c test_image.c test_image_write.c test_perlin.c test_sprintf.c test_truetype.c test_voxel.c -lm
$(CC) $(INCLUDES) $(CPPFLAGS) test_cpp_compilation.cpp -lm -lstdc++
$(CC) $(INCLUDES) $(CFLAGS) image_write_test.c -lm -o image_write_test

50
tests/image_write_test.c Normal file
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@ -0,0 +1,50 @@
#define STB_IMAGE_WRITE_IMPLEMENTATION
#include "stb_image_write.h"
// using an 'F' since it has no rotational symmetries, and 6x5
// because it's a small, atypical size likely to trigger edge cases.
//
// conveniently, it's also small enough to fully fit inside a typical
// directory listing thumbnail, which simplifies checking at a glance.
static const char img6x5_template[] =
".****."
".*...."
".***.."
".*...."
".*....";
int main(int argc, char **argv)
{
// make a RGB version of the template image
// use red on blue to detect R<->B swaps
unsigned char img6x5_rgb[6*5*3];
float img6x5_rgbf[6*5*3];
int i;
for (i = 0; i < 6*5; i++) {
int on = img6x5_template[i] == '*';
img6x5_rgb[i*3 + 0] = on ? 255 : 0;
img6x5_rgb[i*3 + 1] = 0;
img6x5_rgb[i*3 + 2] = on ? 0 : 255;
img6x5_rgbf[i*3 + 0] = on ? 1.0f : 0.0f;
img6x5_rgbf[i*3 + 1] = 0.0f;
img6x5_rgbf[i*3 + 2] = on ? 0.0f : 1.0f;
}
stbi_write_png("wr6x5_regular.png", 6, 5, 3, img6x5_rgb, 6*3);
stbi_write_bmp("wr6x5_regular.bmp", 6, 5, 3, img6x5_rgb);
stbi_write_tga("wr6x5_regular.tga", 6, 5, 3, img6x5_rgb);
stbi_write_jpg("wr6x5_regular.jpg", 6, 5, 3, img6x5_rgb, 95);
stbi_write_hdr("wr6x5_regular.hdr", 6, 5, 3, img6x5_rgbf);
stbi_flip_vertically_on_write(1);
stbi_write_png("wr6x5_flip.png", 6, 5, 3, img6x5_rgb, 6*3);
stbi_write_bmp("wr6x5_flip.bmp", 6, 5, 3, img6x5_rgb);
stbi_write_tga("wr6x5_flip.tga", 6, 5, 3, img6x5_rgb);
stbi_write_jpg("wr6x5_flip.jpg", 6, 5, 3, img6x5_rgb, 95);
stbi_write_hdr("wr6x5_flip.hdr", 6, 5, 3, img6x5_rgbf);
return 0;
}