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evilstreak/gist:aa51c55e3799a2f5d47f

Created July 4, 2014 14:02
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Revisions

  1. evilstreak revised this gist Jul 4, 2014. No changes.
  2. evilstreak created this gist Jul 4, 2014.
    60 changes: 60 additions & 0 deletions gistfile1.rb
    View file
    Original file line number Diff line number Diff line change
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    require 'rspec'

    RSpec.describe Object do
    subject { Object.new }

    before do
    # Stub a method so we can spy on it
    allow(subject).to receive(:a_method)

    # Call it twice with alpha and once with beta
    subject.a_method("alpha")
    subject.a_method("alpha")
    subject.a_method("beta")
    end

    context "with implicit `once`" do
    it "fails with a misleading message" do
    expect(subject).to have_received(:a_method).with("alpha")

    # 1) Object with implicit `once` fails with a misleading message
    # Failure/Error: expect(subject).to have_received(:a_method).with("alpha")
    # #<Object:0x007f914b112a90> received :a_method with unexpected arguments
    # expected: ("alpha")
    # got: ("beta")
    # # ./argument_expectations.rb:18:in `block (3 levels) in <top (required)>'
    end
    end

    context "with explicit `once`" do
    it "fails with a helpful message" do
    expect(subject).to have_received(:a_method).with("alpha").once

    # 2) Object with explicit `once` fails with a helpful message
    # Failure/Error: expect(subject).to have_received(:a_method).with("alpha").once
    # (#<Object:0x007f914b1162a8>).a_method(no args)
    # expected: 1 time with arguments: ("alpha")
    # received: 2 times
    # # ./argument_expectations.rb:24:in `block (3 levels) in <top (required)>'
    end
    end

    context "with explicit `at_least(:once)`" do
    it "passes" do
    expect(subject).to have_received(:a_method).with("alpha").at_least(:once)
    end
    end

    context "with explicit `at_least(3).times`" do
    it "fails with a misleading message" do
    expect(subject).to have_received(:a_method).with("alpha").at_least(3).times

    # 3) Object with explicit `at_least(3).times` fails with a misleading message
    # Failure/Error: expect(subject).to have_received(:a_method).with("alpha").at_least(3).times
    # #<Object:0x007ff89d10a188> received :a_method with unexpected arguments
    # expected: ("alpha")
    # got: ("beta")
    # # ./argument_expectations.rb:50:in `block (3 levels) in <top (required)>'
    end
    end
    end