chore: import upstream snapshot with attribution

client/backoff_test.go

@@ -0,0 +1,31 @@
+package client
+
+import (
+	"context"
+	"testing"
+	"time"
+)
+
+func TestBackoff(t *testing.T) {
+	results := []time.Duration{
+		0 * time.Second,
+		100 * time.Millisecond,
+		600 * time.Millisecond,
+		1900 * time.Millisecond,
+		4300 * time.Millisecond,
+		7900 * time.Millisecond,
+	}
+
+	c := NewClient()
+
+	for i := 0; i < 5; i++ {
+		d, err := exponentialBackoff(context.TODO(), c.NewRequest("test", "test", nil), i)
+		if err != nil {
+			t.Fatal(err)
+		}
+
+		if d != results[i] {
+			t.Fatalf("Expected equal than %v, got %v", results[i], d)
+		}
+	}
+}