test/short/splitting/mixins.unit

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>>> keep constraints on one line if they fit
mixin M on A, B, C, D {}
<<< 3.6
mixin M on A, B, C, D {}
>>> keep implements on same line
mixin M implements B {}
<<< 3.6
mixin M implements B {}
>>> keep all on same line
mixin M on B, C implements D, E {}
<<< 3.6
mixin M on B, C implements D, E {}
>>> split before name
mixin MixinWithVeryLongName__________ on A, B, C, D {}
<<< 3.6
mixin MixinWithVeryLongName__________
    on A, B, C, D {}
>>> long constraint name
mixin MixinWithLongName on LongConstraint {}
<<< 3.6
mixin MixinWithLongName
    on LongConstraint {}
>>> split constraints
mixin M on Constraint1, Constraint2, Constraint3 {}
<<< 3.6
mixin M
    on
        Constraint1,
        Constraint2,
        Constraint3 {}
>>>
mixin AVeryLongSomeMixin on BaseClass implements I {}
<<< 3.6
mixin AVeryLongSomeMixin on BaseClass
    implements I {}
>>>
mixin AVeryLongSomeMixin on BaseClass implements Interface {}
<<< 3.6
mixin AVeryLongSomeMixin on BaseClass
    implements Interface {}
>>> move all implements to next line
mixin SomeMixin implements Interface, AnotherOne {}
<<< 3.6
mixin SomeMixin
    implements Interface, AnotherOne {}
>>> one interface per line
mixin SomeMixin implements Interface, Another, Third {}
<<< 3.6
mixin SomeMixin
    implements
        Interface,
        Another,
        Third {}
>>> multiline constraint with single-line interface
mixin SomeMixin on Base, Another, Third, Fourth, Fifth implements Interface {}
<<< 3.6
mixin SomeMixin
    on
        Base,
        Another,
        Third,
        Fourth,
        Fifth
    implements Interface {}
>>> single-line constraint with multiline interface
mixin SomeMixin on Base implements Interface, Another, Third {}
<<< 3.6
mixin SomeMixin on Base
    implements
        Interface,
        Another,
        Third {}
>>> multiline constraint with multiline interface
mixin SomeMixin on Base, Another, Third, Fourth, Fifth implements Interface, Another, Third {}
<<< 3.6
mixin SomeMixin
    on
        Base,
        Another,
        Third,
        Fourth,
        Fifth
    implements
        Interface,
        Another,
        Third {}
>>> double line mixin with double line interface
mixin SomeMixin on Base, Another implements Interface, Another {}
<<< 3.6
mixin SomeMixin
    on Base, Another
    implements Interface, Another {}