c# - How to test nested collections with FluentAssertions -


i have following spec

bidirectionalgraph fixture = new bidirectionalgraph();  public void verticesshouldbeabletoassociatemultipleedges() {     int = 0;     int b = 1;     int c = 2;      fixture.addedge(a, b);     fixture.addedge(b, c);     fixture.addedge(c, a);      fixture.edgesfrom(a).should().beequivalentto         ( new []{a, b}          , new []{a, c}); }

where edgesfrom defined so

public ienumerable<int[]> edgesfrom(int vertex)

however test fails with

result message: expected collection       {{0, 1}, {0, 2}} equivalent      {{0, 1}, {0, 2}}.

which doesn't quite makes sense me equivalent. fluentassertions not work when comparing collections of collections?

that's because collection.should().beequivalentto() uses default equals() implementation of type make sure each item in first collection appears somewhere in 2nd collection. need new equivalency feature introduced in fluent assertions 2.0. unfortunately became aware of confusing syntax (collection.should().beequivalentto() versus shouldallbeequivalentto()).


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