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end_with matcher

Use the end_with matcher to specify that a string or array ends with the expected characters or elements.

expect("this string").to end_with "string"
expect("this string").not_to end_with "stringy"
expect([0, 1, 2]).to end_with 1, 2

String usage​

Given a file named "example_spec.rb" with:

RSpec.describe "this string" do
  it { is_expected.to end_with "string" }
  it { is_expected.not_to end_with "stringy" }

  # deliberate failures
  it { is_expected.not_to end_with "string" }
  it { is_expected.to end_with "stringy" }
end

When I run rspec example_spec.rb

Then the output should contain all of these:

| 4 examples, 2 failures | | expected "this string" not to end with "string" | | expected "this string" to end with "stringy" |

Array usage​

Given a file named "example_spec.rb" with:

RSpec.describe [0, 1, 2, 3, 4] do
  it { is_expected.to end_with 4 }
  it { is_expected.to end_with 3, 4 }
  it { is_expected.not_to end_with 3 }
  it { is_expected.not_to end_with 0, 1, 2, 3, 4, 5 }

  # deliberate failures
  it { is_expected.not_to end_with 4 }
  it { is_expected.to end_with 3 }
end

When I run rspec example_spec.rb

Then the output should contain all of these:

| 6 examples, 2 failures | | expected [0, 1, 2, 3, 4] not to end with 4 | | expected [0, 1, 2, 3, 4] to end with 3 |