From 6a7989fdfe160a5a03bdaf84e0ede5fe840533b5 Mon Sep 17 00:00:00 2001
From: Denis Bardadym <bardadymchik@gmail.com>
Date: Sat, 28 Oct 2017 14:01:37 +0300
Subject: [PATCH] Fix #157

---
 lib/ext/contain.js       | 2 +-
 test/ext/contain.test.js | 1 +
 2 files changed, 2 insertions(+), 1 deletion(-)

diff --git a/lib/ext/contain.js b/lib/ext/contain.js
index 808f18a..56c87dd 100644
--- a/lib/ext/contain.js
+++ b/lib/ext/contain.js
@@ -138,7 +138,7 @@ export default function(should, Assertion) {
     this.params = { operator: "to contain " + i(other) };
 
     var obj = this.obj;
-    if (typeof obj == "string") {
+    if (typeof obj === "string" && typeof other === "string") {
       // expect other to be string
       this.is.equal(String(other));
     } else if (isIterable(obj) && isIterable(other)) {
diff --git a/test/ext/contain.test.js b/test/ext/contain.test.js
index 094c37f..e78c286 100644
--- a/test/ext/contain.test.js
+++ b/test/ext/contain.test.js
@@ -54,6 +54,7 @@ describe("contain*", function() {
     [1, 2, 3].should.containDeep([3, 2]);
 
     ["code-for-days", "code"].should.containDeep(["code", "code-for-days"]);
+    ({ a: "hello" }.should.not.containDeep({ a: ["hello"] }));
     ["code-for-days", "code-fast"].should.containDeep(["code-fast", "code-for-days"]);
 
     err(function() {