rspec to be false
# Asserts that the tested-against expression literally equals true or false (respectively).
it { expect(true).to be true } # passes
it { expect("abc").to be true } # fails
it { expect(nil).to be true } # fails
it { expect(false).to be false } # passes
it { expect("abc").to be false} # fails
it { expect(nil).to be false} # fails
# Asserts that the tested-against expression evaluates to true or false (respectively).
it { expect(true).to be_true } # passes
it { expect("abc").to be_true } # passes
it { expect(nil).to be_true } # fails
it { expect(false).to be_false } # passes
it { expect("abc").to be_false} # fails
it { expect(nil).to be_false } # passes