1 files changed, 54 insertions, 0 deletions
diff --git a/pkg/utils/utils_test.go b/pkg/utils/utils_test.go
new file mode 100644
index 0000000..b0ea54b
--- /dev/null
+++ b/pkg/utils/utils_test.go
@@ -0,0 +1,54 @@
+package utils
+
+import (
+	"github.com/stretchr/testify/require"
+	"testing"
+)
+
+func TestChanFromSlice(t *testing.T) {
+	t.Run("Nil", func(t *testing.T) {
+		ch := ChanFromSlice[int](nil)
+		require.NotNil(t, ch)
+		requireClosedEmpty(t, ch)
+	})
+
+	t.Run("Empty", func(t *testing.T) {
+		ch := ChanFromSlice([]int{})
+		require.NotNil(t, ch)
+		requireClosedEmpty(t, ch)
+	})
+
+	t.Run("NonEmpty", func(t *testing.T) {
+		ch := ChanFromSlice([]int{42, 23, 1337})
+		require.NotNil(t, ch)
+		requireReceive(t, ch, 42)
+		requireReceive(t, ch, 23)
+		requireReceive(t, ch, 1337)
+		requireClosedEmpty(t, ch)
+	})
+}
+
+// requireReceive is a helper function to check if a value can immediately be received from a channel.
+func requireReceive(t *testing.T, ch <-chan int, expected int) {
+	t.Helper()
+
+	select {
+	case v, ok := <-ch:
+		require.True(t, ok, "receiving should return a value")
+		require.Equal(t, expected, v)
+	default:
+		require.Fail(t, "receiving should not block")
+	}
+}
+
+// requireReceive is a helper function to check if the channel is closed and empty.
+func requireClosedEmpty(t *testing.T, ch <-chan int) {
+	t.Helper()
+
+	select {
+	case _, ok := <-ch:
+		require.False(t, ok, "receiving from channel should not return anything")
+	default:
+		require.Fail(t, "receiving should not block")
+	}
+}