String Operations

Test string content with these assertions.

contain / contains

Asserts that a string contains the expected substring.

expect("hello world").to.contain("world");
expect("hello world").to.contain("o w");
expect("hello world").to.contains("world");  // alias

Asserts that a string starts with the expected prefix.

expect("hello").to.startWith("hel");
expect("https://example.com").to.startWith("https://");

Asserts that a string ends with the expected suffix.

expect("hello").to.endWith("llo");
expect("file.txt").to.endWith(".txt");