Package org.hamcrest.number
Class IsCloseTo
- java.lang.Object
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- org.hamcrest.BaseMatcher<T>
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- org.hamcrest.TypeSafeMatcher<java.lang.Double>
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- org.hamcrest.number.IsCloseTo
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- All Implemented Interfaces:
Matcher<java.lang.Double>
,SelfDescribing
public class IsCloseTo extends TypeSafeMatcher<java.lang.Double>
Is the value a number equal to a value within some range of acceptable error?
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Constructor Summary
Constructors Constructor Description IsCloseTo(double value, double error)
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Method Summary
All Methods Static Methods Instance Methods Concrete Methods Modifier and Type Method Description static Matcher<java.lang.Double>
closeTo(double operand, double error)
Creates a matcher ofDouble
s that matches when an examined double is equal to the specifiedoperand
, within a range of +/-error
.void
describeMismatchSafely(java.lang.Double item, Description mismatchDescription)
Subclasses should override this.void
describeTo(Description description)
Generates a description of the object.boolean
matchesSafely(java.lang.Double item)
Subclasses should implement this.-
Methods inherited from class org.hamcrest.TypeSafeMatcher
describeMismatch, matches
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Methods inherited from class org.hamcrest.BaseMatcher
_dont_implement_Matcher___instead_extend_BaseMatcher_, toString
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Method Detail
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matchesSafely
public boolean matchesSafely(java.lang.Double item)
Description copied from class:TypeSafeMatcher
Subclasses should implement this. The item will already have been checked for the specific type and will never be null.- Specified by:
matchesSafely
in classTypeSafeMatcher<java.lang.Double>
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describeMismatchSafely
public void describeMismatchSafely(java.lang.Double item, Description mismatchDescription)
Description copied from class:TypeSafeMatcher
Subclasses should override this. The item will already have been checked for the specific type and will never be null.- Overrides:
describeMismatchSafely
in classTypeSafeMatcher<java.lang.Double>
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describeTo
public void describeTo(Description description)
Description copied from interface:SelfDescribing
Generates a description of the object. The description may be part of a a description of a larger object of which this is just a component, so it should be worded appropriately.- Parameters:
description
- The description to be built or appended to.
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closeTo
public static Matcher<java.lang.Double> closeTo(double operand, double error)
Creates a matcher ofDouble
s that matches when an examined double is equal to the specifiedoperand
, within a range of +/-error
. For example:assertThat(1.03, is(closeTo(1.0, 0.03)))
- Parameters:
operand
- the expected value of matching doubleserror
- the delta (+/-) within which matches will be allowed
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