Function TestStackTrace

stack_test.go:116–169

(t *testing.T)

}

func TestStackTrace(t *testing.T) {
	tests := []struct {
		err  error
		want []string
	}{{
		New("ooh"), []string{
			"github.com/pkg/errors.TestStackTrace\n" +
				"\t.+/github.com/pkg/errors/stack_test.go:121",
		},
	}, {
		Wrap(New("ooh"), "ahh"), []string{
			"github.com/pkg/errors.TestStackTrace\n" +
				"\t.+/github.com/pkg/errors/stack_test.go:126", // this is the stack of Wrap, not New
		},
	}, {
		Cause(Wrap(New("ooh"), "ahh")), []string{
			"github.com/pkg/errors.TestStackTrace\n" +
				"\t.+/github.com/pkg/errors/stack_test.go:131", // this is the stack of New
		},
	}, {
		func() error { return New("ooh") }(), []string{
			`github.com/pkg/errors.TestStackTrace.func1` +
				"\n\t.+/github.com/pkg/errors/stack_test.go:136", // this is the stack of New
			"github.com/pkg/errors.TestStackTrace\n" +
				"\t.+/github.com/pkg/errors/stack_test.go:136", // this is the stack of New's caller
		},
	}, {
		Cause(func() error {
			return func() error {
				return Errorf("hello %s", fmt.Sprintf("world: %s", "ooh"))
			}()
		}()), []string{
			`github.com/pkg/errors.TestStackTrace.func2.1` +
				"\n\t.+/github.com/pkg/errors/stack_test.go:145", // this is the stack of Errorf
			`github.com/pkg/errors.TestStackTrace.func2` +
				"\n\t.+/github.com/pkg/errors/stack_test.go:146", // this is the stack of Errorf's caller
			"github.com/pkg/errors.TestStackTrace\n" +
				"\t.+/github.com/pkg/errors/stack_test.go:147", // this is the stack of Errorf's caller's caller
		},
	}}
	for i, tt := range tests {
		x, ok := tt.err.(interface {
			StackTrace() StackTrace
		})
		if !ok {
			t.Errorf("expected %#v to implement StackTrace() StackTrace", tt.err)
			continue
		}
		st := x.StackTrace()
		for j, want := range tt.want {
			testFormatRegexp(t, i, st[j], "%+v", want)
		}
	}
}

func stackTrace() StackTrace {
	const depth = 8