Class Helpers.NullsBefore
- java.lang.Object
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- com.google.common.collect.testing.Helpers.NullsBefore
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- All Implemented Interfaces:
Serializable
,Comparator<@Nullable String>
- Direct Known Subclasses:
Helpers.NullsBeforeB
,Helpers.NullsBeforeTwo
- Enclosing class:
- Helpers
public abstract static class Helpers.NullsBefore extends Object implements Comparator<@Nullable String>, Serializable
Compares strings in natural order except that null comes immediately before a given value. This works better than Ordering.natural().nullsFirst() because, if null comes before all other values, it lies outside the submap/submultiset ranges we test, and the variety of tests that exercise null handling fail on those subcollections.- See Also:
- Serialized Form
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Constructor Summary
Constructors Modifier Constructor Description protected
NullsBefore(String justAfterNull)
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description int
compare(@Nullable String lhs, @Nullable String rhs)
boolean
equals(@Nullable Object obj)
int
hashCode()
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Methods inherited from class java.lang.Object
clone, finalize, getClass, notify, notifyAll, toString, wait, wait, wait
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Methods inherited from interface java.util.Comparator
reversed, thenComparing, thenComparing, thenComparing, thenComparingDouble, thenComparingInt, thenComparingLong
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Constructor Detail
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NullsBefore
protected NullsBefore(String justAfterNull)
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