OptionalMatcher (Helidon Project 2.6.9 API)

java.lang.Object
- io.helidon.config.testing.OptionalMatcher

public final class OptionalMatcher
extends Object

Matchers for Optional.

Method Summary

All Methods Static Methods Concrete Methods
Modifier and Type	Method	Description
`static <T> org.hamcrest.Matcher<Optional<T>>`	`empty()`	A matcher for an `Optional` that checks it is empty.
`static <T> org.hamcrest.Matcher<Optional<T>>`	`present()`	A matcher for an `Optional` that checks it is present.
`static <T> org.hamcrest.Matcher<Optional<T>>`	`value(org.hamcrest.Matcher<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
  - value
```
public static <T> org.hamcrest.Matcher<Optional<T>> value(org.hamcrest.Matcher<T> matcher)
```
    A matcher for an Optional that checks it is present, and that the value matches the provided matcher.
    Usage example:
    assertThat(myOptional, value(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
  - empty
```
public static <T> org.hamcrest.Matcher<Optional<T>> empty()
```
    A matcher for an Optional that checks it is empty.
    Usage example:
    assertThat(myOptional, empty());
    Type Parameters:
    
    T - type of the optional
    
    Returns:
    
    matcher validating the Optional is empty
  - present
```
public static <T> org.hamcrest.Matcher<Optional<T>> present()
```
    A matcher for an Optional that checks it is present.
    Usage example:
    assertThat(myOptional, present());
    Type Parameters:
    
    T - type of the value
    
    Returns:
    
    matcher validating the Optional is present