OptionalMatcher (Helidon Project 2.6.13 API)

java.lang.Object
- io.helidon.common.testing.junit5.OptionalMatcher

public final class OptionalMatcher
extends Object

Hamcrest matchers for Optional.

Method Summary

All Methods Static Methods Concrete Methods
Modifier and Type	Method	Description
`static <T> org.hamcrest.Matcher<Optional<T>>`	`optionalEmpty()`	A matcher for an `Optional` that checks it is empty.
`static <T> org.hamcrest.Matcher<Optional<T>>`	`optionalPresent()`	A matcher for an `Optional` that checks it is present.
`static <T> org.hamcrest.Matcher<Optional<T>>`	`optionalValue(org.hamcrest.Matcher<? super T> matcher)`	A matcher for an `Optional` that checks it is present, and that the value matches the provided matcher.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Method Detail
  - optionalValue
```
public static <T> org.hamcrest.Matcher<Optional<T>> optionalValue(org.hamcrest.Matcher<? super T> matcher)
```
    A matcher for an Optional that checks it is present, and that the value matches the provided matcher.
    Usage example:
    assertThat(myOptional, optionalValue(is("expected")));
    Type Parameters:
    
    T - type of the value
    
    Parameters:
    
    matcher - matcher to validate the content of the optional
    
    Returns:
    
    matcher validating the Optional is present and matches the provided matcher
  - optionalEmpty
```
public static <T> org.hamcrest.Matcher<Optional<T>> optionalEmpty()
```
    A matcher for an Optional that checks it is empty.
    Usage example:
    assertThat(myOptional, optionalEmpty());
    Type Parameters:
    
    T - type of the optional
    
    Returns:
    
    matcher validating the Optional is empty
  - optionalPresent
```
public static <T> org.hamcrest.Matcher<Optional<T>> optionalPresent()
```
    A matcher for an Optional that checks it is present.
    Usage example:
    assertThat(myOptional, optionalPresent());
    Type Parameters:
    
    T - type of the value
    
    Returns:
    
    matcher validating the Optional is present