diff --git a/tests/files/conan_1_expected.py b/tests/files/conan_1_expected.py
index aa0d77f..0a1dc36 100644
--- a/tests/files/conan_1_expected.py
+++ b/tests/files/conan_1_expected.py
@@ -34,7 +34,7 @@ def configure(self):
            raise ConanInvalidConfiguration("Double Convertion could not be built by MSVC <14")
 
     def source(self):
-        tools.get("{0}/archive/v{1}.tar.gz".format(self.homepage, self.version))
+        tools.get(f"{self.homepage}/archive/v{self.version}.tar.gz")
         extracted_dir = self.name + "-" + self.version
         os.rename(extracted_dir, self._source_subfolder)
 
diff --git a/tests/files/conan_1_old.py b/tests/files/conan_1_old.py
index fc788b1..aa0d77f 100644
--- a/tests/files/conan_1_old.py
+++ b/tests/files/conan_1_old.py
@@ -1,9 +1,7 @@
-#!/usr/bin/env python
-# -*- coding: utf-8 -*-
-
-from conans import ConanFile, CMake, tools
-from conans.model.version import Version
-from conans.errors import ConanInvalidConfiguration
+from conan import ConanFile
+from conan.errors import ConanInvalidConfiguration
+from conan.tools.scm import Version
+from conans import CMake, tools
 import os
 
 # Conanfiles aren't executables, don't add a hashbang
@@ -15,17 +13,15 @@ class DoubleConversionConan(ConanFile):
     version = "3.0.0"
     url = "https://github.com/bincrafters/conan-double-conversion"
     homepage = "https://github.com/google/double-conversion"
-    author = "Bincrafters <bincraters@gmail.com>"
     description = "Efficient binary-decimal and decimal-binary conversion routines for IEEE doubles."
     license = "MIT"
-    exports = ["LICENSE.md"]
     exports_sources = ["CMakeLists.txt"]
     generators = "cmake"
     settings = "os", "arch", "compiler", "build_type"
     options = {"shared": [True, False], "fPIC": [True, False]}
-    default_options = "shared=False", "fPIC=True"
-    source_subfolder = "source_subfolder"
-    build_subfolder = "build_subfolder"
+    default_options = {'shared': False, 'fPIC': True}
+    _source_subfolder = "source_subfolder"
+    _build_subfolder = "build_subfolder"
 
     def config_options(self):
         if self.settings.os == "Windows":
@@ -40,22 +36,22 @@ def configure(self):
     def source(self):
         tools.get("{0}/archive/v{1}.tar.gz".format(self.homepage, self.version))
         extracted_dir = self.name + "-" + self.version
-        os.rename(extracted_dir, self.source_subfolder)
+        os.rename(extracted_dir, self._source_subfolder)
 
-    def configure_cmake(self):
+    def _configure_cmake(self):
         cmake = CMake(self)
-        cmake.configure(build_folder=self.build_subfolder)
+        cmake.configure(build_folder=self._build_subfolder)
         return cmake
 
     def build(self):
-        cmake = self.configure_cmake()
+        cmake = self._configure_cmake()
         cmake.build()
 
     def package(self):
-        cmake = self.configure_cmake()
+        cmake = self._configure_cmake()
         cmake.install()
-        self.copy(pattern="LICENSE", dst="licenses", src=self.source_subfolder, keep_path=False)
+        self.copy(pattern="LICENSE", dst="licenses", src=self._source_subfolder, keep_path=False)
 
     def package_info(self):
         self.cpp_info.libs = tools.collect_libs(self)
-        self.cpp_info.cppflags = ["-pthread"]
+        self.cpp_info.cxxflags = ["-pthread"]
diff --git a/tests/files/conan_multiline_options_old.py b/tests/files/conan_multiline_options_old.py
index 343937e..a532976 100644
--- a/tests/files/conan_multiline_options_old.py
+++ b/tests/files/conan_multiline_options_old.py
@@ -39,7 +39,7 @@ def configure(self):
            raise ConanInvalidConfiguration("Double Convertion could not be built by MSVC <14")
 
     def source(self):
-        tools.get("{0}/archive/v{1}.tar.gz".format(self.homepage, self.version))
+        tools.get(f"{self.homepage}/archive/v{self.version}.tar.gz")
         extracted_dir = self.name + "-" + self.version
         os.rename(extracted_dir, self.source_subfolder)