package cli //nolint:testpackage // shares programName and the capture helpers

import (
	"os"
	"testing"

	"github.com/stretchr/testify/assert"
)

// TestEntryReturnsStatusCode pins the contract main() relies on for
// issue #75: Entry reports success or failure through its return value
// and never calls os.Exit. An os.Exit from inside Entry would skip
// main's deferred profile writers and truncate the profile of a failing
// command. main turns this code into os.Exit only after those defers
// run, so a failing command must come back with a non-zero code rather
// than ending the process here.
//
// Stdout is captured only to keep the banner and command output off the
// test log; the assertion is on the returned code.
//
//nolint:paralleltest // replaces os.Args and rootFlags
func TestEntryReturnsStatusCode(t *testing.T) {
	for _, testCase := range []struct {
		name string
		args []string
		want int
	}{
		{
			// version is self-contained: it needs no config and no
			// destination store, so it exercises the success path.
			name: "successful command returns zero",
			args: []string{programName, "version"},
			want: 0,
		},
		{
			name: "unknown command returns one",
			args: []string{programName, "no-such-command"},
			want: 1,
		},
	} {
		t.Run(testCase.name, func(t *testing.T) {
			previousArgs := os.Args

			t.Cleanup(func() {
				os.Args = previousArgs
				rootFlags = RootFlags{}
			})

			os.Args = testCase.args

			var code int

			_ = captureProcessStdout(t, func() { code = Entry() })

			assert.Equal(t, testCase.want, code)
		})
	}
}