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=== RUN TestRound7 --- FAIL: TestRound7 (0.00s) main_test.go:37: round( -0.5 ) = -0 != -1 main_test.go:37: round( 0.5 ) = 0 != 1 main_test.go:37: round( 2.2517998136852485e+15 ) = 2.251799813685248e+15 != 2.251799813685249e+15
Тесты я брал из статьи. В builtins_test.go теста для round не нашел.