api: experimental error reporting

1 files changed, 73 insertions, 0 deletions

diff --git a/test/src/test-strerror.c b/test/src/test-strerror.c
new file mode 100644
index 0000000..d2e307c
--- /dev/null
+++ b/test/src/test-strerror.c
@@ -0,0 +1,73 @@
+#include <sys/socket.h>
+#include <unistd.h>
+
+#include "test-common.h"
+
+static uv_link_t a_link;
+static uv_link_t b_link;
+
+static int close_cb_called;
+
+
+static int faulty_try_write(uv_link_t* link,
+                            const uv_buf_t bufs[],
+                            unsigned int nbufs) {
+  return UV_ERRNO_MAX - 1;
+}
+
+
+const char* a_strerror(uv_link_t* l, int err) {
+  CHECK_EQ(l, &a_link, "link == a_link");
+  return "a";
+}
+
+
+const char* b_strerror(uv_link_t* l, int err) {
+  CHECK_EQ(l, &b_link, "link == b_link");
+  return "b";
+}
+
+
+static uv_link_methods_t a_methods = {
+  .try_write = faulty_try_write,
+  .strerror = a_strerror,
+  .close = uv_link_default_close
+};
+
+
+static uv_link_methods_t b_methods = {
+  .try_write = faulty_try_write,
+  .strerror = b_strerror,
+  .close = uv_link_default_close,
+
+  .alloc_cb_override = uv_link_default_alloc_cb_override,
+  .read_cb_override = uv_link_default_read_cb_override
+};
+
+
+static void close_cb(uv_link_t* l) {
+  close_cb_called++;
+}
+
+
+TEST_IMPL(strerror) {
+  int err;
+
+  CHECK_EQ(uv_link_init(&a_link, &a_methods), 0, "uv_link_init()");
+  CHECK_EQ(uv_link_init(&b_link, &b_methods), 0, "uv_link_init()");
+  CHECK_EQ(uv_link_chain(&a_link, &b_link), 0, "uv_link_chain()");
+
+  CHECK_EQ(uv_link_strerror(&b_link, UV_ERRNO_MAX - 1), NULL,
+           "unprefixed error should not be found");
+
+  err = uv_link_try_write(&b_link, NULL, 0);
+  CHECK_EQ(strcmp(uv_link_strerror(&b_link, err), "b"), 0,
+           "error description should match");
+
+  err = uv_link_try_write(&a_link, NULL, 0);
+  CHECK_EQ(strcmp(uv_link_strerror(&b_link, err), "a"), 0,
+           "error description should match");
+
+  uv_link_close(&b_link, close_cb);
+  CHECK_EQ(close_cb_called, 1, "close_cb must be called");
+}