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Project: RSpec Core 3.5

Publisher: RSpec

`--format` option

Use the --format option to tell RSpec how to format the output.

RSpec ships with several formatters built in. By default, it uses the progress
formatter, which generates output like this:

....F.....*.....

A '.' represents a passing example, 'F' is failing, and '*' is pending.

Use the documentation formatter to see the documentation strings passed to
describe, it, and their aliases:

$ rspec spec --format documentation

You can also specify an output target ($stdout by default) with an --out
option immediately following the --format option:

$ rspec spec --format documentation --out rspec.txt

Run rspec --help to see a listing of available formatters.

Background
Given
a file named "example_spec.rb" with: 
RSpec.describe "something" do
  it "does something that passes" do
    expect(5).to eq(5)
  end

  it "does something that fails" do
    expect(5).to eq(4)
  end

  it "does something that is pending", :pending => true do
    expect(5).to be < 3
  end

  it "does something that is skipped", :skip => true do
    expect(5).to be < 3
  end
end
Scenarios
  1. Progress bar format (default)
  2. Documentation format
  3. Documentation format saved to a file
  4. Multiple formats and output targets
Progress bar format (default)
When
I run rspec --format progress example_spec.rb
Then
the output should contain ".F**"
Documentation format
When
I run rspec example_spec.rb --format documentation
Then
the output should contain: 
something
  does something that passes
  does something that fails (FAILED - 1)
  does something that is pending (PENDING: No reason given)
  does something that is skipped (PENDING: No reason given)
Documentation format saved to a file
When
I run rspec example_spec.rb --format documentation --out rspec.txt
Then
the file "rspec.txt" should contain: 
something
  does something that passes
  does something that fails (FAILED - 1)
  does something that is pending (PENDING: No reason given)
  does something that is skipped (PENDING: No reason given)
Multiple formats and output targets
When
I run rspec example_spec.rb --format progress --format documentation --out rspec.txt
Then
the output should contain ".F**"
And
the file "rspec.txt" should contain: 
something
  does something that passes
  does something that fails (FAILED - 1)
  does something that is pending (PENDING: No reason given)
  does something that is skipped (PENDING: No reason given)

Last published over 3 years ago by myronmarston.