cli/command/system: TestEventsFormat: set cmd.Args to prevent test-failures
When running the tests with options set, such as `-update` for updating "golden" files, this test would pick up test arguments because no arguments were set to invoke the command; go test . -update Error: unknown shorthand flag: 'u' in -update Usage: events [OPTIONS] [flags] Flags: -f, --filter filter Filter output based on conditions provided --format string Format output using a custom template: 'json': Print in JSON format 'TEMPLATE': Print output using the given Go template. Refer to https://docs.docker.com/go/formatting/ for more information about formatting output with templates -h, --help help for events --since string Show all events created since timestamp --until string Stream events until this timestamp --- FAIL: TestEventsFormat (0.00s) --- FAIL: TestEventsFormat/default (0.00s) events_test.go:75: assertion failed: error is not nil: unknown shorthand flag: 'u' in -update --- FAIL: TestEventsFormat/json (0.00s) events_test.go:75: assertion failed: error is not nil: unknown shorthand flag: 'u' in -update --- FAIL: TestEventsFormat/json_template (0.00s) events_test.go:75: assertion failed: error is not nil: unknown shorthand flag: 'u' in -update --- FAIL: TestEventsFormat/json_action (0.00s) events_test.go:75: assertion failed: error is not nil: unknown shorthand flag: 'u' in -update This patch: - changes the test to use command-arguments instead of manually setting the flag options; this also adds test-coverage for parsing actual command arguments. - discards stdout/stderr of the command to prevent noise in test output Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
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@ -33,22 +33,24 @@ func TestEventsFormat(t *testing.T) {
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})
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}
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tests := []struct {
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name, format string
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name string
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args []string
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}{
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{
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name: "default",
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args: []string{},
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},
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{
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name: "json",
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format: "json",
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name: "json",
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args: []string{"--format", "json"},
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},
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{
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name: "json template",
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format: "{{ json . }}",
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name: "json template",
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args: []string{"--format", "{{ json . }}"},
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},
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{
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name: "json action",
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format: "{{ json .Action }}",
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name: "json action",
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args: []string{"--format", "{{ json .Action }}"},
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},
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}
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@ -69,9 +71,9 @@ func TestEventsFormat(t *testing.T) {
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return messages, errs
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}})
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cmd := NewEventsCommand(cli)
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if tc.format != "" {
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cmd.Flags().Set("format", tc.format)
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}
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cmd.SetArgs(tc.args)
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cmd.SetOut(io.Discard)
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cmd.SetErr(io.Discard)
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assert.Check(t, cmd.Execute())
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out := cli.OutBuffer().String()
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assert.Check(t, golden.String(out, fmt.Sprintf("docker-events-%s.golden", strings.ReplaceAll(tc.name, " ", "-"))))
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