Manipulating PostgreSQL array columns can be awkward: values can be appended, removed, or replaced, with special handling for multi-value substitutions.

Consul 0.4.0 adds temporary power switching, support for Ruby collections and arbitrary objects as powers, and drops the ActiveSupport::Memoizable dependency.

Stubbing methods on associated records can fail because belongs_to returns an association proxy, not the target object; stub the caller or the association explicitly.

Passing long text blocks to Cucumber steps keeps feature files readable while preserving full Markdown content for step definitions.

JOIN-heavy scopes become brittle when callers chain more conditions or associations. Converting them to a simple IN query preserves chaining and avoids unexpected SQL side effects.

RSpec helper specs can leak content_for state between examples, making repeated checks fail. A fresh helper instance avoids stale instance variables.

Need a simple way to fake server replies during development when external APIs are unavailable or unreliable.

Cerberus is a lightweight and easy-to-use Continuous Builder software for Ruby. It could be run periodically from a scheduler and check if application tests are broken. In case of failed tests Cerberus sends notification to developers.

It turned out that the test subject didn't know that longdesc even existed before the tester told him about it. Can you blame him?

Rake tasks to run specs and tests in parallel, to use multiple CPUs and speedup test runtime.

Mockito is a mocking framework that tastes really good. It lets you write beautiful tests with clean & simple API. Mockito doesn't give you hangover because the tests are very readable and they produce clean verification errors.

RESTClient is a Java application to test RESTful webservices. It can be used to test variety of HTTP communications.

Test spies are a form of test double that preserves the normal four-phase unit

Routing error in Rails 3.2.22.1 can appear when concerns is passed as an option to resources, producing broken routes and failed controller specs.

Bundler does not auto-require gems, so specs may miss dependencies unless the environment calls Bundler.require; direct dependencies still must be required by the gem itself.

patiently do repeats a block until it passes or times out; reusing outer variable names inside the repeated block can make repeated evaluations fail.

Named Machinist blueprints can reuse another blueprint’s fields, letting variants combine shared defaults without repeating attribute definitions.

RSpec stubs for methods that yield blocks need and_yield instead of and_return; multiple yields can be chained, and return values can be combined.

sslscan reports TLS/SSL cipher support and certificate details for remote hosts, helping identify weak protocols, preferred ciphers, and certificate validity.

Reusable Gherkin steps can be chained inside a new step definition with steps or step, but steps only processes lines starting with Gherkin keywords.

When submitting textareas, browsers sometimes include carriage returns (\r) instead of just line feeds (\n) at the end of each line. I don't know when this happens, and most of the time it doesn't matter.

In cases where it does matter, use the attached trait to remove carriage returns from one or more attributes like this:

class Note
  does 'strip_carriage_returns', :prose, :code
end

Here is the test that goes with it:

describe Note do

  describe 'before_validation' do...

Updating WebMock to 1.8.0 can let unstubbed specs send real HTTP requests when Curb is older than 0.7.16.

Capybara can lose the HTTPS state when specs cross between secure and insecure Rails actions, causing request URLs to fall back to the wrong protocol.

validates_acceptance_of silently skips nil attributes, so a missing checkbox or typo can leave acceptance unchecked; a boolean field with validates_presence_of is safer.