Function toContainMatcher

toContainMatcher(
    internalOptions: MatcherInternalOptions,
    received: ContainIterable,
    expected: unknown,
): void
Ensures that value is an Array or Set and contains an expected item.

Usage
```
const value = [1, 2, 3];
expect(value).toContain(2);
expect(new Set(value)).toContain(2);
```
Parameters
- internalOptions: MatcherInternalOptions
  Internal options that provide extra context for the matcher.
- received: ContainIterable
  Received value.
- expected: unknown
  Expected value in the collection.
Returns void
- Defined in src/webEnvExtensions/assertions/matchers/toContain.ts:37
toContainMatcher(
    internalOptions: MatcherInternalOptions,
    received: string,
    expected: string,
): void
Ensures that string value contains an expected substring. Comparison is case-sensitive.

Usage
```
const value = 'Hello, World';
expect(value).toContain('World');
expect(value).toContain(',');
```
Parameters
- internalOptions: MatcherInternalOptions
  Internal options that provide extra context for the matcher.
- received: string
  Received value.
- expected: string
  Expected substring.
Returns void
- Defined in src/webEnvExtensions/assertions/matchers/toContain.ts:54