[Home](./index.md) > [@contract-case/case-definition-dsl](./case-definition-dsl.md) > [matchers](./case-definition-dsl.matchers.md) > [strings](./case-definition-dsl.matchers.strings.md) > [StringContaining](./case-definition-dsl.matchers.strings.stringcontaining.md) > [(constructor)](./case-definition-dsl.matchers.strings.stringcontaining._constructor_.md) ## matchers.strings.StringContaining.(constructor) Matches any string that contains the given substring. **Signature:** ```typescript constructor(substring: string, example: string); ``` ## Parameters

Parameter	Type	Description
substring	string	The substring that the matcher must contain
example	string	An example string that passes this matcher