wallet: introduce method to return all db created files

src/wallet/db.h

@@ -155,6 +155,9 @@ public:
     /** Return path to main database file for logs and error messages. */
     virtual std::string Filename() = 0;
 
+    /** Return paths to all database created files */
+    virtual std::vector<fs::path> Files() = 0;
+
     virtual std::string Format() = 0;
 
     /** Make a DatabaseBatch connected to this database */

src/wallet/migrate.h

@@ -50,6 +50,7 @@ public:
 
     /** Return path to main database file for logs and error messages. */
     std::string Filename() override { return fs::PathToString(m_filepath); }
+    std::vector<fs::path> Files() override { return {m_filepath}; }
 
     std::string Format() override { return "bdb_ro"; }
 

src/wallet/sqlite.h

@@ -147,6 +147,14 @@ public:
     bool Backup(const std::string& dest) const override;
 
     std::string Filename() override { return m_file_path; }
+    /** Return paths to all database created files */
+    std::vector<fs::path> Files() override
+    {
+        std::vector<fs::path> files;
+        files.emplace_back(m_dir_path / fs::PathFromString(m_file_path));
+        files.emplace_back(m_dir_path / fs::PathFromString(m_file_path + "-journal"));
+        return files;
+    }
     std::string Format() override { return "sqlite"; }
 
     /** Make a SQLiteBatch connected to this database */

src/wallet/test/util.h

@@ -109,6 +109,7 @@ public:
     void Close() override {}
 
     std::string Filename() override { return "mockable"; }
+    std::vector<fs::path> Files() override { return {}; }
     std::string Format() override { return "mock"; }
     std::unique_ptr<DatabaseBatch> MakeBatch() override { return std::make_unique<MockableBatch>(m_records, m_pass); }
 };