[libshumate] tests: Add test for file cache ETags

[Marcus Lundblad <mlundblad src gnome org>]

commit 8685419e2a6db2fb193875d71d8487373323da04
Author: James Westman <james jwestman net>
Date:   Thu Mar 18 17:00:06 2021 -0500

    tests: Add test for file cache ETags

 tests/file-cache.c | 65 ++++++++++++++++++++++++++++++++++++++++++++++++++++--
 1 file changed, 63 insertions(+), 2 deletions(-)
---
diff --git a/tests/file-cache.c b/tests/file-cache.c
index dd2d03f..238d484 100644
--- a/tests/file-cache.c
+++ b/tests/file-cache.c
@@ -18,7 +18,7 @@ on_tile_stored (GObject *object, GAsyncResult *res, gpointer user_data)
 }
 
 static void
-on_tile_retrieved (GObject *object, GAsyncResult *res, gpointer user_data)
+on_tile_retrieved_no_etag (GObject *object, GAsyncResult *res, gpointer user_data)
 {
   g_autoptr(GError) error = NULL;
   GMainLoop *loop = user_data;
@@ -56,7 +56,7 @@ test_file_cache_store_retrieve ()
   /* Now retrieve it */
   g_main_loop_unref (loop);
   loop = g_main_loop_new (NULL, TRUE);
-  shumate_file_cache_get_tile_async (cache, tile, NULL, on_tile_retrieved, loop);
+  shumate_file_cache_get_tile_async (cache, tile, NULL, on_tile_retrieved_no_etag, loop);
   g_main_loop_run (loop);
 }
 
@@ -94,6 +94,66 @@ test_file_cache_miss ()
 }
 
 
+
+static void
+on_tile_retrieved_with_etag (GObject *object, GAsyncResult *res, gpointer user_data)
+{
+  g_autoptr(GError) error = NULL;
+  GMainLoop *loop = user_data;
+  g_autofree char *etag = NULL;
+  g_autoptr(GBytes) bytes = NULL;
+  g_autoptr(GBytes) expected_bytes = g_bytes_new_static (TEST_DATA, sizeof TEST_DATA);
+
+  /* Make sure the tile is there and the data is correct */
+  bytes = shumate_file_cache_get_tile_finish ((ShumateFileCache *) object, &etag, res, &error);
+  g_assert_no_error (error);
+  g_assert_true (g_bytes_equal (bytes, expected_bytes));
+  g_assert_cmpstr (etag, ==, TEST_ETAG);
+
+  g_main_loop_quit (loop);
+}
+
+/* Test that potentially out-of-date tile data returns an ETag */
+static void
+test_file_cache_etag ()
+{
+  g_autoptr(ShumateFileCache) cache = shumate_file_cache_new_full (100000000, "test", NULL);
+  g_autoptr(ShumateTile) tile = shumate_tile_new_full (0, 0, 256, 0);
+  g_autoptr(GBytes) bytes = g_bytes_new_static (TEST_DATA, sizeof TEST_DATA);
+  g_autoptr(GMainLoop) loop = NULL;
+  g_autoptr(GFile) file = NULL;
+  guint64 mod_time = 1000;
+
+  g_object_ref_sink (tile);
+
+  /* Store the tile */
+  loop = g_main_loop_new (NULL, TRUE);
+  shumate_file_cache_store_tile_async (cache, tile, bytes, TEST_ETAG, NULL, on_tile_stored, loop);
+  g_main_loop_run (loop);
+
+  /* Change the modified date of the file */
+  file = g_file_new_build_filename (g_get_user_cache_dir(), "shumate/test/0/0/0.png", NULL);
+  g_file_set_attribute (file, G_FILE_ATTRIBUTE_TIME_MODIFIED,
+                        G_FILE_ATTRIBUTE_TYPE_UINT64, &mod_time,
+                        G_FILE_QUERY_INFO_NONE, NULL, NULL);
+
+  /* Now retrieve it */
+  g_main_loop_unref (loop);
+  loop = g_main_loop_new (NULL, TRUE);
+  shumate_file_cache_get_tile_async (cache, tile, NULL, on_tile_retrieved_with_etag, loop);
+  g_main_loop_run (loop);
+
+  /* Mark the tile up to date */
+  shumate_file_cache_mark_up_to_date (cache, tile);
+
+  /* There should be no ETag this time */
+  g_main_loop_unref (loop);
+  loop = g_main_loop_new (NULL, TRUE);
+  shumate_file_cache_get_tile_async (cache, tile, NULL, on_tile_retrieved_no_etag, loop);
+  g_main_loop_run (loop);
+}
+
+
 int
 main (int argc, char *argv[])
 {
@@ -102,6 +162,7 @@ main (int argc, char *argv[])
 
   g_test_add_func ("/file-cache/store-retrieve", test_file_cache_store_retrieve);
   g_test_add_func ("/file-cache/miss", test_file_cache_miss);
+  g_test_add_func ("/file-cache/etag", test_file_cache_etag);
 
   return g_test_run ();
 }