shard-spectator/spec/helpers/spy_sut.cr

# Example system to test that doubles as a spy.
# This class tracks calls made to it.
class SpySUT
  {% for item in [
    {"==",  "eq"},
    {"!=",  "ne"},
    {"<",   "lt"},
    {"<=",  "le"},
    {">",   "gt"},
    {">=",  "ge"},
    {"===", "case_eq"},
    {"=~",  "match"}
  ] %}
  {% operator = item[0].id %}
  {% name = item[1].id %}

  # Number of times the `#{{operator}}` method was called.
  getter {{name}}_call_count = 0

  # Returns true and increments `#{{name}}_call_count`.
  def {{operator}}(other : T) forall T
    @{{name}}_call_count += 1
    true
  end

  {% end %}
end