//go:build result_goexit

// Run with: go test -tags result_goexit -run Test ./pkg/result/...
//
// The -run Test flag is required: Example_catch uses defer result.Catch inside
// a single goroutine, which cannot intercept runtime.Goexit — examples that
// rely on Catch are incompatible with this build tag.

package result_test

import (
	"errors"
	"testing"

	"gitea.djmil.dev/go/template/pkg/result"
)

// TestExpectNotRecoverable verifies the core safety property of the goexit
// build: an Expect failure exits via runtime.Goexit, which is invisible to
// recover() — user code inside a Run/Go closure cannot accidentally swallow it.
func TestExpectNotRecoverable(t *testing.T) {
	swallowed := false

	err := result.Run(func() {
		defer func() {
			if recover() != nil {
				swallowed = true
			}
		}()
		result.Err[int](errors.New("oops")).Expect("test")
	})

	if swallowed {
		t.Fatal("Expect failure was caught by recover() — goexit build should prevent this")
	}
	if err == nil {
		t.Fatal("expected Run to collect the error, got nil")
	}
}