1 files changed, 140 insertions, 0 deletions
diff --git a/vendor/github.com/olivere/elastic/backoff_test.go b/vendor/github.com/olivere/elastic/backoff_test.go
new file mode 100644
index 000000000..eae168a12
--- /dev/null
+++ b/vendor/github.com/olivere/elastic/backoff_test.go
@@ -0,0 +1,140 @@
+package elastic
+
+import (
+	"math/rand"
+	"testing"
+	"time"
+)
+
+func TestZeroBackoff(t *testing.T) {
+	b := ZeroBackoff{}
+	_, ok := b.Next(0)
+	if !ok {
+		t.Fatalf("expected %v, got %v", true, ok)
+	}
+}
+
+func TestStopBackoff(t *testing.T) {
+	b := StopBackoff{}
+	_, ok := b.Next(0)
+	if ok {
+		t.Fatalf("expected %v, got %v", false, ok)
+	}
+}
+
+func TestConstantBackoff(t *testing.T) {
+	b := NewConstantBackoff(time.Second)
+	d, ok := b.Next(0)
+	if !ok {
+		t.Fatalf("expected %v, got %v", true, ok)
+	}
+	if d != time.Second {
+		t.Fatalf("expected %v, got %v", time.Second, d)
+	}
+}
+
+func TestSimpleBackoff(t *testing.T) {
+	var tests = []struct {
+		Duration time.Duration
+		Continue bool
+	}{
+		// #0
+		{
+			Duration: 1 * time.Millisecond,
+			Continue: true,
+		},
+		// #1
+		{
+			Duration: 2 * time.Millisecond,
+			Continue: true,
+		},
+		// #2
+		{
+			Duration: 7 * time.Millisecond,
+			Continue: true,
+		},
+		// #3
+		{
+			Duration: 0,
+			Continue: false,
+		},
+		// #4
+		{
+			Duration: 0,
+			Continue: false,
+		},
+	}
+
+	b := NewSimpleBackoff(1, 2, 7)
+
+	for i, tt := range tests {
+		d, ok := b.Next(i)
+		if got, want := ok, tt.Continue; got != want {
+			t.Fatalf("#%d: expected %v, got %v", i, want, got)
+		}
+		if got, want := d, tt.Duration; got != want {
+			t.Fatalf("#%d: expected %v, got %v", i, want, got)
+		}
+	}
+}
+
+func TestExponentialBackoff(t *testing.T) {
+	rand.Seed(time.Now().UnixNano())
+
+	min := time.Duration(8) * time.Millisecond
+	max := time.Duration(256) * time.Millisecond
+	b := NewExponentialBackoff(min, max)
+
+	between := func(value time.Duration, a, b int) bool {
+		x := int(value / time.Millisecond)
+		return a <= x && x <= b
+	}
+
+	got, ok := b.Next(0)
+	if !ok {
+		t.Fatalf("expected %v, got %v", true, ok)
+	}
+	if !between(got, 8, 256) {
+		t.Errorf("expected [%v..%v], got %v", 8, 256, got)
+	}
+
+	got, ok = b.Next(1)
+	if !ok {
+		t.Fatalf("expected %v, got %v", true, ok)
+	}
+	if !between(got, 8, 256) {
+		t.Errorf("expected [%v..%v], got %v", 8, 256, got)
+	}
+
+	got, ok = b.Next(2)
+	if !ok {
+		t.Fatalf("expected %v, got %v", true, ok)
+	}
+	if !between(got, 8, 256) {
+		t.Errorf("expected [%v..%v], got %v", 8, 256, got)
+	}
+
+	got, ok = b.Next(3)
+	if !ok {
+		t.Fatalf("expected %v, got %v", true, ok)
+	}
+	if !between(got, 8, 256) {
+		t.Errorf("expected [%v..%v], got %v", 8, 256, got)
+	}
+
+	got, ok = b.Next(4)
+	if !ok {
+		t.Fatalf("expected %v, got %v", true, ok)
+	}
+	if !between(got, 8, 256) {
+		t.Errorf("expected [%v..%v], got %v", 8, 256, got)
+	}
+
+	if _, ok := b.Next(5); ok {
+		t.Fatalf("expected %v, got %v", false, ok)
+	}
+
+	if _, ok = b.Next(6); ok {
+		t.Fatalf("expected %v, got %v", false, ok)
+	}
+}