Matchers.toContainValue method | bun:test module

test.Matchers.toContainValue

toContainValue(

expected: unknown

): void;

Asserts that an object contain the provided value.

This method is deep and will look through child properties to find the expected value.

The input value must be an object.

@param expected

the expected value

const shallow = { hello: "world" };
const deep = { message: shallow };
const deepArray = { message: [shallow] };
const o = { a: "foo", b: [1, "hello", true], c: "baz" };

expect(shallow).toContainValue("world");
expect({ foo: false }).toContainValue(false);
expect(deep).toContainValue({ hello: "world" });
expect(deepArray).toContainValue([{ hello: "world" }]);

expect(o).toContainValue("foo", "barr");
expect(o).toContainValue([1, "hello", true]);
expect(o).not.toContainValue("qux");

// NOT
expect(shallow).not.toContainValue("foo");
expect(deep).not.toContainValue({ foo: "bar" });
expect(deepArray).not.toContainValue([{ foo: "bar" }]);