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

api/slicesx/unique_test.go

@@ -0,0 +1,46 @@
+package slicesx_test
+
+import (
+	"testing"
+
+	"github.com/portainer/portainer/api/slicesx"
+	"github.com/stretchr/testify/assert"
+)
+
+func Test_Unique(t *testing.T) {
+	is := assert.New(t)
+	t.Run("Should extract unique numbers", func(t *testing.T) {
+
+		source := []int{1, 1, 2, 3, 4, 4, 5, 4, 6, 7, 8, 9, 1}
+		result := slicesx.Unique(source)
+		expected := []int{1, 2, 3, 4, 5, 6, 7, 8, 9}
+
+		is.ElementsMatch(result, expected)
+	})
+
+	t.Run("Should return empty array", func(t *testing.T) {
+		source := []int{}
+		result := slicesx.Unique(source)
+		expected := []int{}
+		is.ElementsMatch(result, expected)
+	})
+}
+
+func Test_UniqueBy(t *testing.T) {
+	is := assert.New(t)
+	t.Run("Should extract unique numbers by property", func(t *testing.T) {
+
+		source := []struct{ int }{{1}, {1}, {2}, {3}, {4}, {4}, {5}, {4}, {6}, {7}, {8}, {9}, {1}}
+		result := slicesx.UniqueBy(source, func(item struct{ int }) int { return item.int })
+		expected := []struct{ int }{{1}, {2}, {3}, {4}, {5}, {6}, {7}, {8}, {9}}
+
+		is.ElementsMatch(result, expected)
+	})
+
+	t.Run("Should return empty array", func(t *testing.T) {
+		source := []int{}
+		result := slicesx.UniqueBy(source, func(x int) int { return x })
+		expected := []int{}
+		is.ElementsMatch(result, expected)
+	})
+}