open-consul/lib/maps/maps_test.go

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package maps
import (
"testing"
"github.com/stretchr/testify/require"
)
func TestSliceOfKeys(t *testing.T) {
t.Run("string to int", func(t *testing.T) {
m := make(map[string]int)
require.Equal(t, []string(nil), SliceOfKeys(m))
m["foo"] = 5
m["bar"] = 6
require.ElementsMatch(t, []string{"foo", "bar"}, SliceOfKeys(m))
})
type blah struct {
V string
}
t.Run("int to struct", func(t *testing.T) {
m := make(map[int]blah)
require.Equal(t, []int(nil), SliceOfKeys(m))
m[5] = blah{V: "foo"}
m[6] = blah{V: "bar"}
require.ElementsMatch(t, []int{5, 6}, SliceOfKeys(m))
})
type id struct {
Name string
}
t.Run("struct to struct pointer", func(t *testing.T) {
m := make(map[id]*blah)
require.Equal(t, []id(nil), SliceOfKeys(m))
m[id{Name: "foo"}] = &blah{V: "oof"}
m[id{Name: "bar"}] = &blah{V: "rab"}
require.ElementsMatch(t, []id{{Name: "foo"}, {Name: "bar"}}, SliceOfKeys(m))
})
}