fix win32 mocking failures

Author: mattip

tests/test_tags.py

@@ -440,12 +440,14 @@ def test_linux_platforms_32_64bit_on_64bit_os(
         self, arch, is_32bit, expected, monkeypatch
     ):
         monkeypatch.setattr(distutils.util, "get_platform", lambda: arch)
+        monkeypatch.setattr(os, "confstr", lambda x: "glibc 2.20", raising=False)
         monkeypatch.setattr(tags, "_is_manylinux_compatible", lambda *args: False)
         linux_platform = list(tags._linux_platforms(is_32bit=is_32bit))[-1]
         assert linux_platform == expected
 
     def test_linux_platforms_manylinux_unsupported(self, monkeypatch):
         monkeypatch.setattr(distutils.util, "get_platform", lambda: "linux_x86_64")
+        monkeypatch.setattr(os, "confstr", lambda x: "glibc 2.20", raising=False)
         monkeypatch.setattr(tags, "_is_manylinux_compatible", lambda *args: False)
         linux_platform = list(tags._linux_platforms(is_32bit=False))
         assert linux_platform == ["linux_x86_64"]
@@ -457,6 +459,7 @@ def test_linux_platforms_manylinux1(self, is_x86, monkeypatch):
         if platform.system() != "Linux" or not is_x86:
             monkeypatch.setattr(distutils.util, "get_platform", lambda: "linux_x86_64")
             monkeypatch.setattr(platform, "machine", lambda: "x86_64")
+            monkeypatch.setattr(os, "confstr", lambda x: "glibc 2.20", raising=False)
         platforms = list(tags._linux_platforms(is_32bit=False))
         arch = platform.machine()
         assert platforms == ["manylinux1_" + arch, "linux_" + arch]
@@ -468,6 +471,7 @@ def test_linux_platforms_manylinux2010(self, is_x86, monkeypatch):
         if platform.system() != "Linux" or not is_x86:
             monkeypatch.setattr(distutils.util, "get_platform", lambda: "linux_x86_64")
             monkeypatch.setattr(platform, "machine", lambda: "x86_64")
+            monkeypatch.setattr(os, "confstr", lambda x: "glibc 2.20", raising=False)
         platforms = list(tags._linux_platforms(is_32bit=False))
         arch = platform.machine()
         expected = [
@@ -491,6 +495,7 @@ def test_linux_platforms_manylinux2014(self, is_x86, monkeypatch):
         if platform.system() != "Linux" or not is_x86:
             monkeypatch.setattr(distutils.util, "get_platform", lambda: "linux_x86_64")
             monkeypatch.setattr(platform, "machine", lambda: "x86_64")
+            monkeypatch.setattr(os, "confstr", lambda x: "glibc 2.20", raising=False)
         platforms = list(tags._linux_platforms(is_32bit=False))
         arch = platform.machine()
         expected = [
@@ -566,6 +571,7 @@ def test_linux_platforms_manylinux2014_armv6l(self, monkeypatch):
             tags, "_is_manylinux_compatible", lambda name, _: name == "manylinux2014"
         )
         monkeypatch.setattr(distutils.util, "get_platform", lambda: "linux_armv6l")
+        monkeypatch.setattr(os, "confstr", lambda x: "glibc 2.20", raising=False)
         platforms = list(tags._linux_platforms(is_32bit=True))
         expected = ["linux_armv6l"]
         assert platforms == expected