feat(app/edge-stacks): summarize the edge stack statuses in the backend (#818)

api/slicesx/map_test.go

@@ -0,0 +1,43 @@
+package slicesx_test
+
+import (
+	"strconv"
+	"testing"
+
+	"github.com/portainer/portainer/api/slicesx"
+)
+
+func Test_Map(t *testing.T) {
+	test(t, slicesx.Map, "Map integers to strings",
+		[]int{1, 2, 3, 4, 5},
+		[]string{"1", "2", "3", "4", "5"},
+		strconv.Itoa,
+	)
+	test(t, slicesx.Map, "Map strings to integers",
+		[]string{"1", "2", "3", "4", "5"},
+		[]int{1, 2, 3, 4, 5},
+		func(s string) int {
+			n, _ := strconv.Atoi(s)
+			return n
+		},
+	)
+}
+
+func Test_FlatMap(t *testing.T) {
+	test(t, slicesx.FlatMap, "Map integers to strings and flatten",
+		[]int{1, 2, 3, 4, 5},
+		[]string{"1", "1", "2", "2", "3", "3", "4", "4", "5", "5"},
+		func(i int) []string {
+			x := strconv.Itoa(i)
+			return []string{x, x}
+		},
+	)
+	test(t, slicesx.FlatMap, "Map strings to integers and flatten",
+		[]string{"1", "2", "3", "4", "5"},
+		[]int{1, 1, 2, 2, 3, 3, 4, 4, 5, 5},
+		func(s string) []int {
+			n, _ := strconv.Atoi(s)
+			return []int{n, n}
+		},
+	)
+}