if got := hashDeterministicString(m); got == want {
				t.Errorf("hashDeterministicString() = %v, does not want %v", got, want)
			}
			want = hashDeterministicString(m)
			delete(m, "12312312")
			m["another"] = ""

			if got := hashDeterministicString(m); got == want {
				t.Errorf("hashDeterministicString() = %v, does not want %v", got, want)
			}

			want = hashDeterministicString(m)
			m["another"] = "hashDeterministicString"

			if (err != nil) != tt.wantErr {
				t.Errorf("newScopeLevelPair() error = %v, wantErr %v", err, tt.wantErr)
				return
			}
			if !reflect.DeepEqual(got, tt.want) {
				t.Errorf("newScopeLevelPair() got = %v, want %v", got, tt.want)
			}
		})
	}
}

func Test_newScopeStackTraceLevelPair(t *testing.T) {
	validationPattern := `^\w+:(debug|error|warn|info|debug)`
	type args struct {

		}
		if got, want := h2.Uname, v.h.Uname; got != want {
			t.Errorf("i=%d: Uname: got %q, want %q", i, got, want)
		}
		if got, want := h2.Gname, v.h.Gname; got != want {
			t.Errorf("i=%d: Gname: got %q, want %q", i, got, want)
		}
		if got, want := h2.Linkname, v.h.Linkname; got != want {
			t.Errorf("i=%d: Linkname: got %v, want %v", i, got, want)
		}

	if want, got := pre, out.String(); want != got {
		t.Errorf("filter should have already flushed %q, but flushed %q", want, got)
	}

	code, err := f.Finish()
	if err != nil {
		t.Fatal(err)
	}

	// Nothing more should have been written to out.
	if want, got := pre, out.String(); want != got {
		t.Errorf("want output %q, got %q", want, got)
	}
	if want := 1; want != code {

		t.Fatalf("expected 2 subscribers")
	}
	if want, got := int32(2), ps.NumSubscribers(Mask(1)); got != want {
		t.Fatalf("want %d subscribers, got %d", want, got)
	}
	if want, got := int32(2), ps.NumSubscribers(Mask(2)); got != want {
		t.Fatalf("want %d subscribers, got %d", want, got)
	}
	if want, got := int32(2), ps.NumSubscribers(Mask(1|2)); got != want {
		t.Fatalf("want %d subscribers, got %d", want, got)
	}

		strings.TrimSuffix(string(out), "\n"), "\n")
	if want, got := len(wantLevels), len(gotLogs); want != got {
		t.Fatalf("Number of logs want %v, got %v logs: %v", want, got, gotLogs)
	}

	for i, l := range gotLogs {
		// For each line, there should be two level string, e.g.
		// "2021-07-09T03:26:08.984951Z	debug	debug log"
		if got, want := strings.Count(l, wantLevels[i]), 2; want != got {

package cgotest

/*
#cgo CFLAGS: -I issue20266 -Iissue20266 -Ddef20266
#include "issue20266.h"
*/
import "C"

import "testing"

func test20266(t *testing.T) {
	if got, want := C.issue20266, 20266; got != want {
		t.Errorf("got %d, want %d", got, want)
	}

		filter   Filter
		userTags string
		want     bool
	}{
		{
			filter:   noTags,
			userTags: "",
			want:     true,
		},
		{
			filter:   noTags,
			userTags: "A=3",
			want:     true,
		},
		{
			filter:   oneTag,
			userTags: "A=3",
			want:     false,
		},
		{
			filter:   oneTag,
			userTags: "FOO=1",
			want:     true,
		},
		{
			filter:   oneTag,

		name string
		arg  []string
		want map[string]string
	}{
		{name: "empty", arg: []string{""}, want: map[string]string{"": ""}},
		{name: "one-valid", arg: []string{"key=value"}, want: map[string]string{"key": "value"}},
		{name: "one-valid-double-equals", arg: []string{"key==value"}, want: map[string]string{"key": "=value"}},
		{name: "one-key-only", arg: []string{"key"}, want: map[string]string{"key": ""}},
	}

		if !eq(result, tt.a) {
			t.Errorf("Fields(%q) = %v; want %v", tt.s, a, tt.a)
			continue
		}

		if string(b) != tt.s {
			t.Errorf("slice changed to %s; want %s", string(b), tt.s)
		}
		if len(tt.a) > 0 {
			if want := tt.a[len(tt.a)-1] + "z"; string(x) != want {
				t.Errorf("last appended result was %s; want %s", x, want)
			}
		}
	}
}

func TestFieldsFunc(t *testing.T) {