gb vendor fetch github.com/opentracing/go-opentracing

vendor/src/github.com/opentracing/opentracing-go/options_test.go

@@ -0,0 +1,31 @@
+package opentracing
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/require"
+)
+
+func TestChildOfAndFollowsFrom(t *testing.T) {
+	tests := []struct {
+		newOpt  func(SpanContext) SpanReference
+		refType SpanReferenceType
+		name    string
+	}{
+		{ChildOf, ChildOfRef, "ChildOf"},
+		{FollowsFrom, FollowsFromRef, "FollowsFrom"},
+	}
+
+	for _, test := range tests {
+		opts := new(StartSpanOptions)
+
+		test.newOpt(nil).Apply(opts)
+		require.Nil(t, opts.References, "%s(nil) must not append a reference", test.name)
+
+		ctx := new(noopSpanContext)
+		test.newOpt(ctx).Apply(opts)
+		require.Equal(t, []SpanReference{
+			SpanReference{ReferencedContext: ctx, Type: test.refType},
+		}, opts.References, "%s(ctx) must append a reference", test.name)
+	}
+}