3 files changed, 111 insertions, 0 deletions
diff --git a/tests/common_linux.h b/tests/common_linux.h
new file mode 100644
index 0000000..167b483
--- /dev/null
+++ b/tests/common_linux.h
@@ -0,0 +1,70 @@
+#include <rgl.h>
+
+#include <errno.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/mman.h>
+
+#define crashErrno() RGL_CRASH(strerror(errno))
+#define assertErrno(cond) RGL_ASSERT(cond, strerror(errno))
+
+void BufferAlloc(RGL_Buffer *buf) {
+  unsigned int size = buf->width * buf->height * 4;
+
+  buf->data = mmap(NULL, size, PROT_READ | PROT_WRITE,
+                   MAP_PRIVATE | MAP_ANONYMOUS, 0, 0);
+  assertErrno(buf->data != MAP_FAILED);
+}
+
+void BufferDestroy(RGL_Buffer *buf) {
+  unsigned int size = buf->width * buf->height * 4;
+  if (munmap(buf->data, size) < 0) {
+    crashErrno();
+  }
+}
+
+void ArenaInit(RGL_Arena *arena, unsigned int capacity) {
+  if (capacity) {
+    arena->capacity = capacity;
+  } else {
+    arena->capacity = 4096;
+  }
+
+  arena->data = mmap(0, arena->capacity, PROT_READ | PROT_WRITE,
+                     MAP_PRIVATE | MAP_ANONYMOUS, 0, 0);
+  if (arena->data == MAP_FAILED) {
+    crashErrno();
+  }
+
+  arena->size = 0;
+}
+
+void ArenaDestroy(RGL_Arena *arena) {
+  if (munmap(arena->data, arena->capacity) < 0) {
+    crashErrno();
+  }
+}
+
+int WritePPM(RGL_Buffer buf, const char *filename) {
+  int i;
+  FILE *f = fopen(filename, "wb");
+  RGL_ASSERT(f, "failed to open file");
+
+  fprintf(f, "P6\n%d %d\n255\n", buf.width, buf.height);
+
+  for (i = 0; i < buf.width * buf.height; ++i) {
+    unsigned int pixel = buf.data[i];
+
+    unsigned char r = (pixel >> 16) & 0xFF;
+    unsigned char g = (pixel >> 8) & 0xFF;
+    unsigned char b = pixel & 0xFF;
+
+    fputc(r, f);
+    fputc(g, f);
+    fputc(b, f);
+  }
+
+  fclose(f);
+  return 0;
+}
diff --git a/tests/meson.build b/tests/meson.build
new file mode 100644
index 0000000..f4f46e7
--- /dev/null
+++ b/tests/meson.build
@@ -0,0 +1,8 @@
+exe_stroke = executable(
+  'testStroke',
+  'test_stroke.c',
+  link_with: [lib_rgl],
+  include_directories: incdir,
+)
+
+test('stroke', exe_stroke)
diff --git a/tests/test_stroke.c b/tests/test_stroke.c
new file mode 100644
index 0000000..1bcafd1
--- /dev/null
+++ b/tests/test_stroke.c
@@ -0,0 +1,33 @@
+#include "common_linux.h"
+
+int main(int argc, char *argv[]) {
+  RGL_Context ctx;
+  RGL_Buffer buf;
+
+  buf.width = 800;
+  buf.height = 600;
+
+  ArenaInit(&ctx.queue.arena, 0);
+  ctx.queue.commands = (RGL_Command *)ctx.queue.arena.data;
+
+  BufferAlloc(&buf);
+
+  ctx.color = RGL_COLOR(255, 255, 255, 255);
+
+  RGL_BeginPath(&ctx, PathStroke);
+  RGL_PathMoveTo(&ctx, 0, 0);
+  RGL_PathMoveTo(&ctx, 799, 599);
+  RGL_PathMoveTo(&ctx, 799, 0);
+  RGL_PathMoveTo(&ctx, 0, 599);
+  RGL_EndPath(&ctx);
+
+  RGL_Draw(&ctx, &buf);
+
+  if (WritePPM(buf, "output.ppm"))
+    return 1;
+
+  ArenaDestroy(&ctx.queue.arena);
+  BufferDestroy(&buf);
+
+  return 0;
+}