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package test
import (
"fmt"
"os/exec"
"strings"
"testing"
"github.com/mgutz/str"
"github.com/stretchr/testify/assert"
)
// CommandSwapper takes a command, verifies that it is what it's expected to be
// and then returns a replacement command that will actually be called by the os
type CommandSwapper struct {
Expect string
Replace string
}
// SwapCommand verifies the command is what we expected, and swaps it out for a different command
func (i *CommandSwapper) SwapCommand(t *testing.T, cmd string, args []string) *exec.Cmd {
splitCmd := str.ToArgv(i.Expect)
assert.EqualValues(t, splitCmd[0], cmd, fmt.Sprintf("received command: %s %s", cmd, strings.Join(args, " ")))
if len(splitCmd) > 1 {
assert.EqualValues(t, splitCmd[1:], args, fmt.Sprintf("received command: %s %s", cmd, strings.Join(args, " ")))
}
splitCmd = str.ToArgv(i.Replace)
return exec.Command(splitCmd[0], splitCmd[1:]...)
}
// CreateMockCommand creates a command function that will verify its receiving the right sequence of commands from lazygit
func CreateMockCommand(t *testing.T, swappers []*CommandSwapper) func(cmd string, args ...string) *exec.Cmd {
commandIndex := 0
return func(cmd string, args ...string) *exec.Cmd {
var command *exec.Cmd
if commandIndex > len(swappers)-1 {
assert.Fail(t, fmt.Sprintf("too many commands run. This command was (%s %s)", cmd, strings.Join(args, " ")))
}
command = swappers[commandIndex].SwapCommand(t, cmd, args)
commandIndex++
return command
}
}
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