[DRE-maint] Bug#952077: ruby-rgen: FTBFS: ERROR: Test "ruby2.7" failed: Error: test_float(MetamodelFromEcoreTest): NoMethodError: undefined method `new' for BigDecimal:Class

[Lucas Nussbaum]

Source: ruby-rgen
Version: 0.8.0-1.1
Severity: serious
Justification: FTBFS on amd64
Tags: buster sid
Usertags: ftbfs-20200222 ftbfs-buster

Hi,

During a rebuild of all packages in sid, your package failed to build
on amd64.

Relevant part (hopefully):
> Error: test_float(MetamodelFromEcoreTest): NoMethodError: undefined method `new' for BigDecimal:Class
> /<<PKGBUILDDIR>>/test/metamodel_builder_test.rb:257:in `test_float'
>      254:       assert_equal "123456789012345680.0", sprintf("%.1f", sc.floatWithDefault)
>      255:     end
>      256:     sc.floatWithDefault = nil
>   => 257:     sc.floatWithDefault = BigDecimal.new("123456789012345678.0")
>      258:     assert sc.floatWithDefault.is_a?(BigDecimal)
>      259:     assert_equal "123456789012345678.0", sc.floatWithDefault.to_s("F")
>      260: 
> (eval):2:in `test_float'
> ===============================================================================
> ............./<<PKGBUILDDIR>>/test/metamodel_builder_test.rb:273: warning: constant ::Bignum is deprecated
> ..................................................................
> ..............................
> Finished in 0.727819173 seconds.
> -------------------------------------------------------------------------------
> 259 tests, 1731 assertions, 0 failures, 2 errors, 0 pendings, 0 omissions, 0 notifications
> 99.2278% passed
> -------------------------------------------------------------------------------
> 355.86 tests/s, 2378.34 assertions/s
> ERROR: Test "ruby2.7" failed: 

The full build log is available from:
   http://qa-logs.debian.net/2020/02/22/ruby-rgen_0.8.0-1.1_unstable.log

A list of current common problems and possible solutions is available at
http://wiki.debian.org/qa.debian.org/FTBFS . You're welcome to contribute!

About the archive rebuild: The rebuild was done on EC2 VM instances from
Amazon Web Services, using a clean, minimal and up-to-date chroot. Every
failed build was retried once to eliminate random failures.