Fix duplicate ndots:0, and improve validation #2212
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The "message" argument in assert.Equal expects a format
string; the current string was not that, resulting in an
incorrect message being printed;
--- FAIL: TestDNSOptions (1.28s)
Location: service_common_test.go:92
Error: Not equal: "ndots:5" (expected)
!= "ndots:0" (actual)
Messages: The option must be ndots:5 instead:%!(EXTRA string=ndots:0)
This patch removes the message altogether, because assert.Equal
already prints enough information to catch the error;
--- FAIL: TestDNSOptions (1.28s)
Location: service_common_test.go:92
Error: Not equal: "ndots:5" (expected)
!= "ndots:0" (actual)
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
`ndots:0` is a valid DNS option; previously, `ndots:0` was
ignored, leading to the default (`ndots:0`) also being applied;
Before this change:
docker network create foo
docker run --rm --network foo --dns-opt ndots:0 alpine cat /etc/resolv.conf
nameserver 127.0.0.11
options ndots:0 ndots:0
After this change:
docker network create foo
docker run --rm --network foo --dns-opt ndots:0 alpine cat /etc/resolv.conf
nameserver 127.0.0.11
options ndots:0
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
instead of printing the whole option, print the _number_ only,
because that's what the error-message is pointing at;
Before this change:
invalid number for ndots option ndots:foobar
After this change:
invalid number for ndots option: foobar
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
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Author
|
ping @fcrisciani @selansen PTAL |
Contributor
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LGTM |
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Addresses moby/moby#37349
This PR has a couple of changes:
1. Remove redundant and faulty assert messages
The "message" argument in assert.Equal expects a format string; the current string was not that, resulting in an incorrect message being printed;
This patch removes the message altogether, because assert.Equal already prints enough information to catch the error;
2. do not ignore user-provided "ndots:0" option
This is the actual fix:
ndots:0is a valid DNS option; previously,ndots:0was ignored, leading to the default (ndots:0) also being applied;Before this change:
After this change:
3. improve error message for invalid ndots number
Just a minor enhancement; instead of printing the whole option, print the number only, because that's what the error-message is pointing at;
Before this change:
After this change:
4. ndots: produce error on negative numbers
Prevent (e.g.)
ndots:-1being silently ignored