Fix tests that are "hard coded" to expect x86_64 output by mocking the platform interface.

Submitted upstream:
https://github.com/pypa/packaging/pull/176

diff --git a/tests/test_tags.py b/tests/test_tags.py
index 1eacf68..0a3f1b4 100644
--- a/tests/test_tags.py
+++ b/tests/test_tags.py
@@ -435,37 +435,43 @@ class TestManylinuxPlatform:
         linux_platform = list(tags._linux_platforms(is_32bit=False))
         assert linux_platform == ["linux_x86_64"]
 
-    def test_linux_platforms_manylinux1(self, monkeypatch):
+    def test_linux_platforms_manylinux1(self, is_x86, monkeypatch):
         monkeypatch.setattr(
             tags, "_is_manylinux_compatible", lambda name, _: name == "manylinux1"
         )
-        if platform.system() != "Linux":
+        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")
         platforms = list(tags._linux_platforms(is_32bit=False))
-        assert platforms == ["manylinux1_x86_64", "linux_x86_64"]
+        arch = platform.machine()
+        assert platforms == ["manylinux1_" + arch, "linux_" + arch]
 
-    def test_linux_platforms_manylinux2010(self, monkeypatch):
+    def test_linux_platforms_manylinux2010(self, is_x86, monkeypatch):
         monkeypatch.setattr(
             tags, "_is_manylinux_compatible", lambda name, _: name == "manylinux2010"
         )
-        if platform.system() != "Linux":
+        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")
         platforms = list(tags._linux_platforms(is_32bit=False))
-        expected = ["manylinux2010_x86_64", "manylinux1_x86_64", "linux_x86_64"]
+        arch = platform.machine()
+        expected = ["manylinux2010_" + arch, "manylinux1_" + arch, "linux_" + arch]
         assert platforms == expected
 
-    def test_linux_platforms_manylinux2014(self, monkeypatch):
+    def test_linux_platforms_manylinux2014(self, is_x86, monkeypatch):
         monkeypatch.setattr(
             tags, "_is_manylinux_compatible", lambda name, _: name == "manylinux2014"
         )
-        if platform.system() != "Linux":
+        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")
         platforms = list(tags._linux_platforms(is_32bit=False))
+        arch = platform.machine()
         expected = [
-            "manylinux2014_x86_64",
-            "manylinux2010_x86_64",
-            "manylinux1_x86_64",
-            "linux_x86_64",
+            "manylinux2014_" + arch,
+            "manylinux2010_" + arch,
+            "manylinux1_" + arch,
+            "linux_" + arch,
         ]
         assert platforms == expected
 
/td></tr>
<tr><td><span title='2021-12-17 17:29:34 +0100'>2021-12-17</span></td><td><a href='/guix/commit/tests/guix-hash.sh?id=28ffdc5cc815e981281e2aa67a81280666985f0f'>guix hash: Add git serializer.</a><span class='msg-avail'>...<span class='msg-tooltip'>* guix/scripts/hash.scm (git-hash): New procedure.
(%options): Use it.
* tests/guix-hash.sh: Test it.
* doc/guix.texi: Update.

Signed-off-by: Ludovic Courtès &lt;ludo@gnu.org&gt;
</span></span></td><td>zimoun</td></tr>
<tr><td><span title='2021-12-17 17:29:34 +0100'>2021-12-17</span></td><td><a href='/guix/commit/tests/guix-hash.sh?id=05c962594c346da21f201be72caadfa19060cc9d'>guix hash: Add 'serializer' option.</a><span class='msg-avail'>...<span class='msg-tooltip'>* guix/scripts/hash.scm (%options): Deprecate 'recursive', add 'serializer'.
(%default-options): Add 'serializer'.
(nar-hash): New procedure.
(default-hash): New procedure.
(guix-hash)[file-hash]: Use them.
(show-help): Adjust.
* tests/guix-hash.scm: Adjust.
* doc/guix.texi: Update.

Signed-off-by: Ludovic Courtès &lt;ludo@gnu.org&gt;
</span></span></td><td>zimoun</td></tr>
<tr><td><span title='2021-12-17 17:29:34 +0100'>2021-12-17</span></td><td><a href='/guix/commit/tests/guix-hash.sh?id=6e08f07f2032cd85cd67beadf7a91b5c26d0619d'>guix hash: Support several files.</a><span class='msg-avail'>...<span class='msg-tooltip'>* guix/scripts/hash.scm (guix-hash): Allow several files.
[file-hash]: Catch system-error.
[formatted-hash]: New procedure.
* tests/guix-hash.sh: Add test.
* doc/guix.texi (Invoking guix hash): Mention "one or more files".

Co-authored-by: Ludovic Courtès &lt;ludo@gnu.org&gt;
</span></span></td><td>zimoun</td></tr>
<tr><td><span title='2021-01-04 11:51:48 +0100'>2021-01-04</span></td><td><a href='/guix/commit/tests/guix-hash.sh?id=ed63b7f87e88b0ce9c4a78bf0529599de9172b1f'>guix hash: Honor '-H' when used alongside '-r'.</a><span class='msg-avail'>...<span class='msg-tooltip'>* guix/scripts/hash.scm (guix-hash): When 'recursive? is true, use
'open-hash-port' instead of 'open-sha256-port'.
* tests/guix-hash.sh: Add test for 'guix hash -r -H sha512'.
</span></span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2020-09-28 21:06:36 -0500'>2020-09-28</span></td><td><a href='/guix/commit/tests/guix-hash.sh?id=d8934360d2453a403b5433e71d09188e4ed23b57'>tests: Simplify shell exit status negation;</a><span class='msg-avail'>...<span class='msg-tooltip'>* tests/guix-archive.sh, tests/guix-build-branch.sh, tests/guix-build.sh,
tests/guix-daemon.sh, tests/guix-download.sh, tests/guix-environment.sh,
tests/guix-gc.sh, tests/guix-git-authenticate.sh, tests/guix-graph.sh,
tests/guix-hash.sh, tests/guix-lint.sh, tests/guix-pack-relocatable.sh,
tests/guix-pack.sh, tests/guix-package-aliases.sh, tests/guix-package-net.sh,
tests/guix-package.sh: Use the shell '!' keyword to negate command exit status
in place of 'if ...; then false; else true; fi'
</span></span></td><td>Eric Bavier</td></tr>