introduce gui adapter

pkg/integration/helpers/shell.go

@@ -0,0 +1,75 @@
+package helpers
+
+import (
+	"fmt"
+	"io/ioutil"
+	"os"
+
+	"github.com/jesseduffield/lazygit/pkg/integration/types"
+	"github.com/jesseduffield/lazygit/pkg/secureexec"
+	"github.com/mgutz/str"
+)
+
+type ShellImpl struct{}
+
+var _ types.Shell = &ShellImpl{}
+
+func (s *ShellImpl) RunCommand(cmdStr string) types.Shell {
+	args := str.ToArgv(cmdStr)
+	cmd := secureexec.Command(args[0], args[1:]...)
+	cmd.Env = os.Environ()
+
+	output, err := cmd.CombinedOutput()
+	if err != nil {
+		panic(fmt.Sprintf("error running command: %s\n%s", cmdStr, string(output)))
+	}
+
+	return s
+}
+
+func (s *ShellImpl) CreateFile(path string, content string) types.Shell {
+	err := ioutil.WriteFile(path, []byte(content), 0o644)
+	if err != nil {
+		panic(fmt.Sprintf("error creating file: %s\n%s", path, err))
+	}
+
+	return s
+}
+
+func (s *ShellImpl) NewBranch(name string) types.Shell {
+	return s.RunCommand("git checkout -b " + name)
+}
+
+func (s *ShellImpl) GitAdd(path string) types.Shell {
+	return s.RunCommand(fmt.Sprintf("git add \"%s\"", path))
+}
+
+func (s *ShellImpl) GitAddAll() types.Shell {
+	return s.RunCommand("git add -A")
+}
+
+func (s *ShellImpl) Commit(message string) types.Shell {
+	return s.RunCommand(fmt.Sprintf("git commit -m \"%s\"", message))
+}
+
+func (s *ShellImpl) EmptyCommit(message string) types.Shell {
+	return s.RunCommand(fmt.Sprintf("git commit --allow-empty -m \"%s\"", message))
+}
+
+func (s *ShellImpl) CreateFileAndAdd(fileName string, fileContents string) types.Shell {
+	return s.
+		CreateFile(fileName, fileContents).
+		GitAdd(fileName)
+}
+
+func (s *ShellImpl) CreateNCommits(n int) types.Shell {
+	for i := 1; i <= n; i++ {
+		s.CreateFileAndAdd(
+			fmt.Sprintf("file%02d.txt", i),
+			fmt.Sprintf("file%02d content", i),
+		).
+			Commit(fmt.Sprintf("commit %02d", i))
+	}
+
+	return s
+}