ffmpegtest

type Case struct {
	// Arg is the argument that selects the case.
	Arg string `json:"arg"`

	// Stdout is written to standard output.
	Stdout string `json:"stdout"`

	// Stderr is written to standard error.
	Stderr string `json:"stderr"`

	// ExitCode is the status the fake exits with.
	ExitCode int `json:"exitCode"`

	// Output, when set, is written to the file named by the last argument.
	Output string `json:"output"`
}

type Stub struct {
	// Stdout is written to standard output.
	Stdout string `json:"stdout"`

	// Stderr is written to standard error.
	Stderr string `json:"stderr"`

	// ExitCode is the status the fake exits with.
	ExitCode int `json:"exitCode"`

	// Swap names a file the fake replaces with replacement.mkv from the same
	// directory before it writes anything, so a cache keyed on the file's
	// identity sees it change mid-run.
	Swap Swap `json:"swap"`

	// ArgvFile, when set, receives every argument on its own line.
	ArgvFile string `json:"argvFile"`

	// ArgvSeparator, when set, is appended to ArgvFile after the arguments, so
	// several runs can be told apart.
	ArgvSeparator string `json:"argvSeparator"`

	// ArgvBesideOutput appends every argument to "<last argument>.argv".
	ArgvBesideOutput bool `json:"argvBesideOutput"`

	// Output, when set, is written to the file named by the last argument.
	Output string `json:"output"`

	// Cases replace Stdout, Stderr, ExitCode, and Output for a run whose
	// arguments include a case's Arg, so one fake can answer each kind of
	// call a caller makes. The first case that matches wins.
	Cases []Case `json:"cases"`
}

type Swap string