actual := HeaderMatcher(tc.K, tc.V)
			if !cmp.Equal(tc.Expect, actual, protocmp.Transform()) {
				t.Errorf("expecting %v, but got %v", tc.Expect, actual)
			}
		})
	}
}

func TestHostMatcherWithRegex(t *testing.T) {
	testCases := []struct {
		Name   string
		K      string
		V      string
		Expect *routepb.HeaderMatcher
	}{
		{
			Name: "present match",
			K:    ":authority",
			V:    "*",