if an exclude file is deleted, skip it and remove it from internal list

ignore files can be removed: not an error so adjust tests

Signed-off-by: Matthieu Gallien <matthieu.gallien@nextcloud.com>

src/csync/csync_exclude.cpp

@@ -318,14 +318,26 @@ bool ExcludedFiles::reloadExcludeFiles()
     bool success = true;
     const auto keys = _excludeFiles.keys();
     for (const auto& basePath : keys) {
-        for (const auto &excludeFile : _excludeFiles.value(basePath)) {
+        const auto itValue = _excludeFiles.find(basePath);
+        if (itValue == std::end(_excludeFiles)) {
+            continue;
+        }
+        auto &excludeFiles = *itValue;
+        for (auto excludeFileIt = std::begin(excludeFiles); excludeFileIt != std::end(excludeFiles); ) {
+            const auto &excludeFile = *excludeFileIt;
             QFile file(excludeFile);
-            if (file.exists() && file.open(QIODevice::ReadOnly)) {
+            if (!file.exists()) {
+                excludeFileIt = excludeFiles.erase(excludeFileIt);
+                continue;
+            }
+
+            if (file.open(QIODevice::ReadOnly)) {
                 loadExcludeFilePatterns(basePath, file);
             } else {
                 success = false;
                 qWarning() << "System exclude list file could not be opened:" << excludeFile;
             }
+            ++excludeFileIt;
         }
     }
 

test/testexcludedfiles.cpp

@@ -746,11 +746,11 @@ private slots:
         QCOMPARE(excludedFiles->_excludeFiles[folder2].first(), folder2ExcludeList);
     }
     
-    void testReloadExcludeFiles_fileDoesNotExist_returnFalse() {
+    void testReloadExcludeFiles_fileDoesNotExist_returnTrue() {
         excludedFiles.reset(new ExcludedFiles());
         const QString nonExistingFile("directory/.sync-exclude.lst");
         excludedFiles->addExcludeFilePath(nonExistingFile);
-        QCOMPARE(excludedFiles->reloadExcludeFiles(), false);
+        QCOMPARE(excludedFiles->reloadExcludeFiles(), true);
         QCOMPARE(excludedFiles->_allExcludes.size(), 0);
     }