diff --git a/node/expr/t_instance_of_test.go b/node/expr/t_instance_of_test.go
new file mode 100644
index 0000000..58aca44
--- /dev/null
+++ b/node/expr/t_instance_of_test.go
@@ -0,0 +1,90 @@
+package expr_test
+
+import (
+	"bytes"
+	"testing"
+
+	"github.com/z7zmey/php-parser/node/name"
+
+	"github.com/z7zmey/php-parser/node/expr"
+
+	"github.com/z7zmey/php-parser/node"
+	"github.com/z7zmey/php-parser/node/stmt"
+	"github.com/z7zmey/php-parser/php5"
+	"github.com/z7zmey/php-parser/php7"
+)
+
+func TestInstanceOf(t *testing.T) {
+	src := `<? $a instanceof Foo;`
+
+	expected := &stmt.StmtList{
+		Stmts: []node.Node{
+			&stmt.Expression{
+				Expr: &expr.InstanceOf{
+					Expr: &expr.Variable{VarName: &node.Identifier{Value: "$a"}},
+					Class: &name.Name{
+						Parts: []node.Node{
+							&name.NamePart{Value: "Foo"},
+						},
+					},
+				},
+			},
+		},
+	}
+
+	actual, _, _ := php7.Parse(bytes.NewBufferString(src), "test.php")
+	assertEqual(t, expected, actual)
+
+	actual, _, _ = php5.Parse(bytes.NewBufferString(src), "test.php")
+	assertEqual(t, expected, actual)
+}
+
+func TestInstanceOfRelative(t *testing.T) {
+	src := `<? $a instanceof namespace\Foo;`
+
+	expected := &stmt.StmtList{
+		Stmts: []node.Node{
+			&stmt.Expression{
+				Expr: &expr.InstanceOf{
+					Expr: &expr.Variable{VarName: &node.Identifier{Value: "$a"}},
+					Class: &name.Relative{
+						Parts: []node.Node{
+							&name.NamePart{Value: "Foo"},
+						},
+					},
+				},
+			},
+		},
+	}
+
+	actual, _, _ := php7.Parse(bytes.NewBufferString(src), "test.php")
+	assertEqual(t, expected, actual)
+
+	actual, _, _ = php5.Parse(bytes.NewBufferString(src), "test.php")
+	assertEqual(t, expected, actual)
+}
+
+func TestInstanceOfFullyQualified(t *testing.T) {
+	src := `<? $a instanceof \Foo;`
+
+	expected := &stmt.StmtList{
+		Stmts: []node.Node{
+			&stmt.Expression{
+				Expr: &expr.InstanceOf{
+					Expr: &expr.Variable{VarName: &node.Identifier{Value: "$a"}},
+					Class: &name.FullyQualified{
+						Parts: []node.Node{
+							&name.NamePart{Value: "Foo"},
+						},
+					},
+				},
+			},
+		},
+	}
+
+	actual, _, _ := php7.Parse(bytes.NewBufferString(src), "test.php")
+	assertEqual(t, expected, actual)
+
+	actual, _, _ = php5.Parse(bytes.NewBufferString(src), "test.php")
+	assertEqual(t, expected, actual)
+}