Strings And Collections

Use these matchers for substring checks, prefixes, suffixes, and array membership.

String Matchers

expect("abcdef").toMatch("bcd");
expect("abcdef").toStartWith("abc");
expect("abcdef").toEndWith("def");

Available methods:

• toMatch(value)
• toStartWith(value)
• toEndWith(value)

toMatch(...) is currently a substring check, not a regular expression engine.

Length

expect([1, 2, 3]).toHaveLength(3);

toHaveLength(value) is intended for arrays.

Containment

expect("abcdef").toContain("cd");
expect([1, 2, 3]).toContain(2);

Available methods:

• toContain(value)
• toContains(value)

toContains(...) is just an alias of toContain(...).

For strings, containment is substring-based. For arrays, it uses the runtime array includes(...) behavior.