X-Git-Url: https://git.sesse.net/?p=remoteglot;a=blobdiff_plain;f=server%2Fserve-analysis.js;h=41610e1439d733d2f73c0389351f711454a5e9a0;hp=86f2d9083aa9c229451a42acfa9edfba62daa97b;hb=d5e047ca5c28b2a6e4be62b7ee7cb3f11552f028;hpb=04509c20d2edea71df6e9c440d3260458e3cc34a

diff --git a/server/serve-analysis.js b/server/serve-analysis.js
index 86f2d90..41610e1 100644
--- a/server/serve-analysis.js
+++ b/server/serve-analysis.js
@@ -134,6 +134,17 @@ var create_json_historic_diff = function(new_json, history_left, new_diff_json,
 	var histobj = history_left.shift();
 	var diff = delta.JSON_delta.diff(histobj.parsed, new_json.parsed);
 	var diff_text = JSON.stringify(diff);
+
+	// Verify that the delta is correct
+	var base = JSON.parse(histobj.plain);
+	delta.JSON_delta.patch(base, diff);
+	var correct_pv = JSON.stringify(base['pv']);
+	var wrong_pv = JSON.stringify(new_json.parsed['pv']);
+	if (correct_pv !== wrong_pv) {
+		console.log("Patch went wrong:", histobj.plain, new_json.plain);
+		exit();
+	}
+
 	zlib.gzip(diff_text, function(err, buffer) {
 		if (err) throw err;
 		new_diff_json[histobj.last_modified] = {