Tests

Handle JRuby NullPointerExceptions when getting the EC curve_name. #42

Job	Run time
2.1 on ubuntu-20.04	17s
2.2 on ubuntu-20.04	28s
2.3 on ubuntu-20.04	25s
2.4 on ubuntu-20.04	27s
2.5 on ubuntu-20.04	28s
2.6 on ubuntu-20.04	29s
2.7 on ubuntu-20.04	24s
3.0 on ubuntu-20.04	10s
3.1 on ubuntu-20.04	17s
3.2 on ubuntu-20.04	13s
3.3 on ubuntu-20.04	13s
jruby-9.1 on ubuntu-20.04	51s
jruby-9.2 on ubuntu-20.04	1m 2s
jruby-9.3 on ubuntu-20.04	58s
jruby-9.4 on ubuntu-20.04	1m 1s
2.1 on windows-2019	59s
2.2 on windows-2019	1m 16s
2.3 on windows-2019	1m 20s
2.4 on windows-2019	1m 17s
2.5 on windows-2019	1m 55s
2.6 on windows-2019	2m 22s
2.7 on windows-2019	1m 32s
3.0 on windows-2019	49s
3.1 on windows-2019	54s
3.2 on windows-2019	1m 16s
3.3 on windows-2019	3m 22s
jruby-9.1 on windows-2019	1m 27s
jruby-9.2 on windows-2019	1m 41s
jruby-9.3 on windows-2019	1m 34s
jruby-9.4 on windows-2019	1m 24s
3.3 on ubuntu-22.04	16s
head on ubuntu-20.04 (experimental)	12s
jruby-head on ubuntu-20.04 (experimental)	55s
head on ubuntu-22.04 (experimental)	16s
head on windows-2019 (experimental)	1m 10s
jruby-head on windows-2019 (experimental)	1m 31s
	35m 11s

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