# \#minitest

**URL:** https://www.ruby-forum.com/tag/minitest/14.md

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## [Rails problems after Fedora upgrade. Help please](https://www.ruby-forum.com/t/rails-problems-after-fedora-upgrade-help-please/263089)

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**Author:** [@rishard](https://www.ruby-forum.com/u/rishard)\
**Replies:** 0\
**Last updated:** [July 24, 2022, 3:05am UTC](https://www.ruby-forum.com/t/rails-problems-after-fedora-upgrade-help-please/263089 "2022-07-24T03:05:43Z")

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After upgrading from Fedora 35 to Fedora 36, I got this problem: $ rails s /usr/share/rubygems/rubygems/resolver/conflict.rb:47:in \`conflicting\_dependencies': undefined method \`request' for nil:NilClass (NoMethodError) …

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## [Data Science Course in Noida](https://www.ruby-forum.com/t/data-science-course-in-noida/260930)

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**Author:** [@akshusingh](https://www.ruby-forum.com/u/akshusingh)\
**Replies:** 0\
**Last updated:** [February 5, 2021, 10:55am UTC](https://www.ruby-forum.com/t/data-science-course-in-noida/260930 "2021-02-05T10:55:13Z")

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Data Science is a field that uses scientific approach, methods, and processes, algorithms to extract knowledge from many structured and unstructured data. It is expected that around 6 million data scientists will be requ…

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## [Lazy evaluation matchers?](https://www.ruby-forum.com/t/lazy-evaluation-matchers/260561)

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**Author:** [@RubyRambo](https://www.ruby-forum.com/u/RubyRambo)\
**Replies:** 1\
**Last updated:** [December 5, 2020, 6:36pm UTC](https://www.ruby-forum.com/t/lazy-evaluation-matchers/260561 "2020-12-05T18:36:33Z")

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Hi all, Does anyone know what Lazy evaluation matchers are in Ruby Unit testing? Are they a framework-specific thing like RSpec, or can they be achieved with test-unit and or minitest? thanks