ToolchainsBuildingRequest request = new DefaultToolchainsBuildingRequest();
        request.setGlobalToolchainsSource(new StringSource(""));
        ToolchainsParseException parseException = new ToolchainsParseException("MESSAGE", 4, 2);
        doThrow(parseException).when(toolchainsReader).read(any(InputStream.class), ArgumentMatchers.anyMap());

        try {
            toolchainBuilder.build(request);