includeExtensions.empty || includeExtensions.any {
            FileUtils.hasExtensionIgnoresCase(file.name, it)
        }
    }

    //asserts none of the files changed/added since last snapshot
    void noneRecompiled() {
        recompiledFiles([])
    }

    //asserts file changed/added since last snapshot
    void recompiledFile(File file) {
        recompiledFiles([file])
    }