Add be_same_time_as matcher written by and thanks to @ManageIQ team

Author: eliotsykes

time_matchers.rb

@@ -0,0 +1,36 @@
+# Thanks to ManageIQ team for the be_same_time_as matcher, see
+# https://github.com/ManageIQ/manageiq/blob/f647d72ec6f8ba644d753fb041c8ecad277c3ef4/spec/support/custom_matchers/be_same_time_as.rb
+RSpec::Matchers.define :be_same_time_as do |expected|
+  match do |actual|
+    actual.round(precision) == expected.round(precision)
+  end
+
+  failure_message do |actual|
+    "\nexpected: #{format_time(expected)},\n     " \
+      "got: #{format_time(actual)}\n\n(compared using be_same_time_as with precision of #{precision})"
+  end
+
+  failure_message_when_negated do
+    "\nexpected different time from #{format_time(expected)}\n\n" \
+      "(compared using be_same_time_as with precision of #{precision})"
+  end
+
+  description do
+    "be the same time as #{format_time(expected)} to #{precision} digits of precision"
+  end
+
+  def with_precision(p)
+    @precision = p
+    self
+  end
+
+  def precision
+    @precision ||= 5
+  end
+
+  private
+
+  def format_time(t)
+    "#<#{t.class} #{t.iso8601(10)}>"
+  end
+end