Register Extension Functions After Export (#565)

- Added call to registerExtensionFunctions() after the database is reloaded during the exportDatabase() call.
- Added test for this scenario.

Author: dreblen

src/api.js

@@ -1088,6 +1088,7 @@ Module["onRuntimeInitialized"] = function onRuntimeInitialized() {
         var binaryDb = FS.readFile(this.filename, { encoding: "binary" });
         this.handleError(sqlite3_open(this.filename, apiTemp));
         this.db = getValue(apiTemp, "i32");
+        registerExtensionFunctions(this.db);
         return binaryDb;
     };
 

test/test_extension_functions.js

@@ -69,6 +69,9 @@ exports.test = function(sql, assert) {
   var res = db.exec("SELECT reverse(str_data) FROM test;");
   assert.equal(res[0]['values'][0][0], "!dlroW olleH", "reverse() function works");
 
+  db.export()
+  var res = db.exec("SELECT floor(4.1)");
+  assert.equal(res[0]['values'][0][0], 4, "extension function works after export()");
 };
 
 if (module == require.main) {