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# frozen_string_literal: true
# Verify that the actual string contains all lines that included the specified
# lines in the provided order.
#
# Example:
#
# text = <<~TXT
# Jingle bells,
# Jingle bells,
# Jingle all the way
# TXT
#
# # passes
# expect(text).to include_lines("Jingle bells", "Jingle bells")
#
# # passes
# expect(text).to include_lines("Jingle bells", "Jingle all the")
#
# # do not pass
# expect(text).to include_lines("Jingle all the way", "Jingle bells")
::RSpec::Matchers.define :include_lines do |*lines|
match do |actual|
actual.each_line do |line|
lines.shift if line.include?(lines.first)
break if lines.empty?
end
lines.empty?
end
match_when_negated do |_actual|
raise "This matcher doesn't support negation"
end
failure_message do |actual|
<<~MSG
Couldn't find lines:
#{lines.join("\n")}
in the output:
#{actual}"
MSG
end
end
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