Add test to check for EXIF rotation of JPEG images

test/loader.c

@@ -0,0 +1,40 @@
+#include <stdarg.h>
+#include <stddef.h>
+#include <setjmp.h>
+#include <cmocka.h>
+#include <unistd.h>
+#include <FreeImage.h>
+#include <pthread.h>
+#include "loader.h"
+
+static void test_jpeg_rotation(void **state)
+{
+  (void)state;
+  struct imv_loader ldr;
+  void *retval;
+  char *error;
+  unsigned int width;
+
+  imv_init_loader(&ldr);
+
+  imv_loader_load(&ldr, "test/orientation.jpg", NULL, 0);
+  pthread_join(ldr.bg_thread, &retval);
+
+  error = imv_loader_get_error(&ldr);
+  assert_false(error);
+
+  assert_false(retval == PTHREAD_CANCELED);
+  assert_false(ldr.out_bmp == NULL);
+
+  width = FreeImage_GetWidth(ldr.out_bmp);
+  assert_true(width == 1);
+}
+
+int main(void)
+{
+  const struct CMUnitTest tests[] = {
+    cmocka_unit_test(test_jpeg_rotation),
+  };
+
+  return cmocka_run_group_tests(tests, NULL, NULL);
+}