Sebastiaan van Stijn 05ef5559c3 pkg/plugins: override timeouts during tests ...

Some tests were testing non-existing plugins, but therefore triggered
the retry-loop, which times out after 15-30 seconds. Add some options
to allow overriding this timeout during tests.

Before:

    go test -v -run '^(TestGet|TestNewClientWithTimeout)$'
    === RUN   TestGet
    === RUN   TestGet/success
    === RUN   TestGet/not_implemented
    === RUN   TestGet/not_exists
    WARN[0000] Unable to locate plugin: vegetable, retrying in 1s
    WARN[0001] Unable to locate plugin: vegetable, retrying in 2s
    WARN[0003] Unable to locate plugin: vegetable, retrying in 4s
    WARN[0007] Unable to locate plugin: vegetable, retrying in 8s
    --- PASS: TestGet (15.02s)
        --- PASS: TestGet/success (0.00s)
        --- PASS: TestGet/not_implemented (0.00s)
        --- PASS: TestGet/not_exists (15.02s)
    === RUN   TestNewClientWithTimeout
        client_test.go:166: started remote plugin server listening on: http://127.0.0.1:36275
    WARN[0015] Unable to connect to plugin: 127.0.0.1:36275/Test.Echo: Post "http://127.0.0.1:36275/Test.Echo": context deadline exceeded (Client.Timeout exceeded while awaiting headers), retrying in 1s
    WARN[0017] Unable to connect to plugin: 127.0.0.1:36275/Test.Echo: Post "http://127.0.0.1:36275/Test.Echo": context deadline exceeded (Client.Timeout exceeded while awaiting headers), retrying in 2s
    WARN[0019] Unable to connect to plugin: 127.0.0.1:36275/Test.Echo: Post "http://127.0.0.1:36275/Test.Echo": net/http: request canceled (Client.Timeout exceeded while awaiting headers), retrying in 4s
    WARN[0024] Unable to connect to plugin: 127.0.0.1:36275/Test.Echo: Post "http://127.0.0.1:36275/Test.Echo": net/http: request canceled (Client.Timeout exceeded while awaiting headers), retrying in 8s
    --- PASS: TestNewClientWithTimeout (17.64s)
    PASS
    ok  	github.com/docker/docker/pkg/plugins	32.664s

After:

    go test -v -run '^(TestGet|TestNewClientWithTimeout)$'
    === RUN   TestGet
    === RUN   TestGet/success
    === RUN   TestGet/not_implemented
    === RUN   TestGet/not_exists
    WARN[0000] Unable to locate plugin: this-plugin-does-not-exist, retrying in 1s
    --- PASS: TestGet (1.00s)
        --- PASS: TestGet/success (0.00s)
        --- PASS: TestGet/not_implemented (0.00s)
        --- PASS: TestGet/not_exists (1.00s)
    === RUN   TestNewClientWithTimeout
        client_test.go:167: started remote plugin server listening on: http://127.0.0.1:45973
    --- PASS: TestNewClientWithTimeout (0.04s)
    PASS
    ok  	github.com/docker/docker/pkg/plugins	1.050s

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>

2023-08-08 15:41:11 +02:00

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