diff --git a/sel_test.go b/sel_test.go
new file mode 100644
index 0000000..d0b0e7d
--- /dev/null
+++ b/sel_test.go
@@ -0,0 +1,238 @@
+package chromedp
+
+import (
+	"testing"
+
+	"github.com/knq/chromedp/cdp"
+)
+
+func TestWaitReady(t *testing.T) {
+	t.Parallel()
+
+	c := testAllocate(t, "js.html")
+	defer c.Release()
+
+	var err error
+	var nodeIDs []cdp.NodeID
+	err = c.Run(defaultContext, NodeIDs("#input2", &nodeIDs, ByID))
+	if err != nil {
+		t.Fatalf("got error: %v", err)
+	}
+	if len(nodeIDs) != 1 {
+		t.Errorf("expected to have exactly 1 node id: got %d", len(nodeIDs))
+	}
+
+	err = c.Run(defaultContext, WaitReady("#input2", ByID))
+	if err != nil {
+		t.Fatalf("got error: %v", err)
+	}
+
+	var value string
+	err = c.Run(defaultContext, Value(nodeIDs, &value, ByNodeID))
+	if err != nil {
+		t.Fatalf("got error: %v", err)
+	}
+
+}
+
+func TestWaitVisible(t *testing.T) {
+	t.Parallel()
+
+	c := testAllocate(t, "js.html")
+	defer c.Release()
+
+	var err error
+	var nodeIDs []cdp.NodeID
+	err = c.Run(defaultContext, NodeIDs("#input2", &nodeIDs, ByID))
+	if err != nil {
+		t.Fatalf("got error: %v", err)
+	}
+	if len(nodeIDs) != 1 {
+		t.Errorf("expected to have exactly 1 node id: got %d", len(nodeIDs))
+	}
+
+	err = c.Run(defaultContext, WaitVisible("#input2", ByID))
+	if err != nil {
+		t.Fatalf("got error: %v", err)
+	}
+
+	var value string
+	err = c.Run(defaultContext, Value(nodeIDs, &value, ByNodeID))
+	if err != nil {
+		t.Fatalf("got error: %v", err)
+	}
+
+}
+
+func TestWaitNotVisible(t *testing.T) {
+	t.Parallel()
+
+	c := testAllocate(t, "js.html")
+	defer c.Release()
+
+	var err error
+	var nodeIDs []cdp.NodeID
+	err = c.Run(defaultContext, NodeIDs("#input2", &nodeIDs, ByID))
+	if err != nil {
+		t.Fatalf("got error: %v", err)
+	}
+	if len(nodeIDs) != 1 {
+		t.Errorf("expected to have exactly 1 node id: got %d", len(nodeIDs))
+	}
+
+	err = c.Run(defaultContext, Click("#button2", ByID))
+	if err != nil {
+		t.Fatalf("got error: %v", err)
+	}
+
+	err = c.Run(defaultContext, WaitNotVisible("#input2", ByID))
+	if err != nil {
+		t.Fatalf("got error: %v", err)
+	}
+
+	var value string
+	err = c.Run(defaultContext, Value(nodeIDs, &value, ByNodeID))
+	if err != nil {
+		t.Fatalf("got error: %v", err)
+	}
+
+}
+
+func TestWaitEnabled(t *testing.T) {
+	t.Parallel()
+
+	c := testAllocate(t, "js.html")
+	defer c.Release()
+
+	var err error
+
+	var attr string
+	ok := false
+	err = c.Run(defaultContext, AttributeValue("#select1", "disabled", &attr, &ok, ByID))
+	if err != nil {
+		t.Fatalf("got error: %v", err)
+	}
+	if !ok {
+		t.Fatal("expected element to be disabled")
+	}
+
+	err = c.Run(defaultContext, Click("#button3", ByID))
+	if err != nil {
+		t.Fatalf("got error: %v", err)
+	}
+
+	err = c.Run(defaultContext, WaitEnabled("#select1", ByID))
+	if err != nil {
+		t.Fatalf("got error: %v", err)
+	}
+	err = c.Run(defaultContext, AttributeValue("#select1", "disabled", &attr, &ok, ByID))
+	if err != nil {
+		t.Fatalf("got error: %v", err)
+	}
+	if ok {
+		t.Fatal("expected element to be enabled")
+	}
+
+	err = c.Run(defaultContext, SetAttributeValue(`//*[@id="select1"]/option[1]`, "selected", "true"))
+	if err != nil {
+		t.Fatalf("got error: %v", err)
+	}
+
+	var value string
+	err = c.Run(defaultContext, Value("#select1", &value, ByID))
+	if err != nil {
+		t.Fatalf("got error: %v", err)
+	}
+	if value != "foo" {
+		t.Fatalf("expected value to be foo, got: %s", value)
+	}
+
+}
+
+func TestWaitSelected(t *testing.T) {
+	t.Parallel()
+
+	c := testAllocate(t, "js.html")
+	defer c.Release()
+
+	var err error
+
+	err = c.Run(defaultContext, Click("#button3", ByID))
+	if err != nil {
+		t.Fatalf("got error: %v", err)
+	}
+
+	err = c.Run(defaultContext, WaitEnabled("#select1", ByID))
+	if err != nil {
+		t.Fatalf("got error: %v", err)
+	}
+
+	var attr string
+	ok := false
+	err = c.Run(defaultContext, AttributeValue(`//*[@id="select1"]/option[1]`, "selected", &attr, &ok))
+	if err != nil {
+		t.Fatalf("got error: %v", err)
+	}
+	if ok {
+		t.Fatal("expected element to be not selected")
+	}
+
+	err = c.Run(defaultContext, SetAttributeValue(`//*[@id="select1"]/option[1]`, "selected", "true"))
+	if err != nil {
+		t.Fatalf("got error: %v", err)
+	}
+
+	err = c.Run(defaultContext, WaitSelected(`//*[@id="select1"]/option[1]`))
+	if err != nil {
+		t.Fatalf("got error: %v", err)
+	}
+
+	err = c.Run(defaultContext, AttributeValue(`//*[@id="select1"]/option[1]`, "selected", &attr, nil))
+	if err != nil {
+		t.Fatalf("got error: %v", err)
+	}
+	if attr != "true" {
+		t.Fatal("expected element to be selected")
+	}
+}
+
+func TestWaitNotPresent(t *testing.T) {
+	t.Parallel()
+
+	c := testAllocate(t, "js.html")
+	defer c.Release()
+
+	var err error
+
+	err = c.Run(defaultContext, WaitVisible("#input3", ByID))
+	if err != nil {
+		t.Fatalf("got error: %v", err)
+	}
+
+	err = c.Run(defaultContext, Click("#button4", ByID))
+	if err != nil {
+		t.Fatalf("got error: %v", err)
+	}
+
+	err = c.Run(defaultContext, WaitNotPresent("#input3", ByID))
+	if err != nil {
+		t.Fatalf("got error: %v", err)
+	}
+}
+
+func TestAtLeast(t *testing.T) {
+	t.Parallel()
+
+	c := testAllocate(t, "js.html")
+	defer c.Release()
+
+	var err error
+	var nodes []*cdp.Node
+	err = c.Run(defaultContext, Nodes("//input", &nodes, AtLeast(3)))
+	if err != nil {
+		t.Fatalf("got error: %v", err)
+	}
+	if len(nodes) < 3 {
+		t.Errorf("expected to have at least 3 nodes: got %d", len(nodes))
+	}
+}
diff --git a/testdata/js.html b/testdata/js.html
index b460943..7b8ad7c 100644
--- a/testdata/js.html
+++ b/testdata/js.html
@@ -17,7 +17,19 @@
 </head>
 <body style="background-color: white">
   <input id="input1" type="number" value="0"/>
-  <input id="button1" type="button" value="Click me" ondblclick="increment()"> 
+  <input id="button1" type="button" value="Click me" ondblclick="increment()">
+  <hr>
+  <input id="input2" type="text" value="foo"/>
+  <input id="button2" type="button" value="Click me" onclick="show()">
+  <hr>
+  <input id="button3" type="button" value="Click me" onclick="enable()">
+  <select id="select1" disabled>
+    <option value="foo">foo</option>
+    <option value="bar" selected>bar</option>
+  </select>
+  <hr>
+  <input id="input3" type="text" value=""/>
+  <input id="button4" type="button" value="Click me" onclick="remove()">
   <script>
     document.getElementById('input1').onfocus = function() {
       this.value = '9999'
@@ -26,7 +38,20 @@
       this.value = '0'
     };
     function increment() {
-      document.getElementById('input1').value = parseInt(document.getElementById('input1').value) + 1;
+      document.getElementById('input1').value++;
+      return false;
+    }
+    function show() {
+      document.getElementById('input2').style.display = 'none';
+      return false;
+    }
+    function enable() {
+      document.getElementById('select1').disabled = false;
+      return false;
+    }
+    function remove() {
+      document.body.removeChild(document.getElementById('input3'));
+      return false;
     }
   </script>
 </body>