changeset 26111:dcc12365fa38

hghave: add a check for docker support This currently refuses to operate if on a non-Linux host. I suspect that Docker running on FreeBSD 11 or on an Illumos derivative would work fine, but I don't have ready access to such a system. On OS X using boot2docker (I used a hacky xhyve-based one for testing), it won't work because $TESTTEMP doesn't end up inside the set of directories that get forwarded to the boot2docker VM, so you can't actually drop debs in the $TESTTEMP at all. It would be possible (probably even trivial) to hack around this by using a randomly-named temporary directory inside the working directory, but that seems unlikely to be useful enough to justify the ugliness.
author Augie Fackler <augie@google.com>
date Tue, 25 Aug 2015 00:06:41 -0400
parents 2dcfb98c5314
children cb6cfbf21735
files tests/hghave.py
diffstat 1 files changed, 17 insertions(+), 0 deletions(-) [+]
line wrap: on
line diff
--- a/tests/hghave.py	Tue Aug 25 00:03:15 2015 -0400
+++ b/tests/hghave.py	Tue Aug 25 00:06:41 2015 -0400
@@ -414,6 +414,23 @@
 def has_osx():
     return sys.platform == 'darwin'
 
+@check("docker", "docker support")
+def has_docker():
+    pat = r'A self-sufficient runtime for linux containers\.'
+    if matchoutput('docker --help', pat):
+        if 'linux' not in sys.platform:
+            # TODO: in theory we should be able to test docker-based
+            # package creation on non-linux using boot2docker, but in
+            # practice that requires extra coordination to make sure
+            # $TESTTEMP is going to be visible at the same path to the
+            # boot2docker VM. If we figure out how to verify that, we
+            # can use the following instead of just saying False:
+            # return 'DOCKER_HOST' in os.environ
+            return False
+
+        return True
+    return False
+
 @check("debhelper", "debian packaging tools")
 def has_debhelper():
     dpkg = matchoutput('dpkg --version',