98 lines
2 KiB
Go
98 lines
2 KiB
Go
package git
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import (
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"fmt"
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"os"
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"os/exec"
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"path/filepath"
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"runtime"
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"testing"
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"github.com/stretchr/testify/assert"
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"github.com/stretchr/testify/require"
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)
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func TestOutput(t *testing.T) {
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tests := []struct {
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name string
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exitCode int
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stdout string
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stderr string
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wantErr error
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}{
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{
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name: "successful command",
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stdout: "hello world",
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stderr: "",
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exitCode: 0,
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wantErr: nil,
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},
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{
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name: "not a repo failure",
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stdout: "",
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stderr: "fatal: not a git repository (or any of the parent directories): .git",
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exitCode: 128,
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wantErr: ErrNoGitRepository,
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},
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}
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for _, tt := range tests {
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t.Run(tt.name, func(t *testing.T) {
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cmd := Command{
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&exec.Cmd{
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Path: createMockExecutable(t, tt.stdout, tt.stderr, tt.exitCode),
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},
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}
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out, err := cmd.Output()
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if tt.wantErr != nil {
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require.Error(t, err)
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var gitError *GitError
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require.ErrorAs(t, err, &gitError)
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assert.Equal(t, tt.wantErr, gitError.err)
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} else {
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require.NoError(t, err)
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}
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assert.Equal(t, tt.stdout, string(out))
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})
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}
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}
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func createMockExecutable(t *testing.T, stdout string, stderr string, exitCode int) string {
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tmpDir := t.TempDir()
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sourcePath := filepath.Join(tmpDir, "main.go")
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binaryPath := filepath.Join(tmpDir, "mockexec")
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if runtime.GOOS == "windows" {
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binaryPath += ".exe"
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}
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// Create Go source
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source := buildCommandSourceCode(exitCode, stdout, stderr)
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// Write source file
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if err := os.WriteFile(sourcePath, []byte(source), 0600); err != nil {
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t.Fatal(err)
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}
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// Compile
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cmd := exec.Command("go", "build", "-o", binaryPath, sourcePath)
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if out, err := cmd.CombinedOutput(); err != nil {
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t.Fatalf("failed to compile: %v\n%s", err, out)
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}
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return binaryPath
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}
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func buildCommandSourceCode(exitCode int, stdout, stderr string) string {
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return fmt.Sprintf(`package main
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import (
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"fmt"
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"os"
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)
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func main() {
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fmt.Printf(%q)
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fmt.Fprintf(os.Stderr, %q)
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os.Exit(%d)
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}`, stdout, stderr, exitCode)
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}
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