Rspec `eq` vs` eql` in `expect` Tests

Question

Was ist der Unterschied zwischen der Verwendung von eq und eql in RSPC-Tests? Gibt es einen Unterschied zwischen:

it "adds the correct information to entries" do 
    # book = AddressBook.new # => Replaced by line 4 
    book.add_entry('Ada Lovelace', '010.012.1815', 'augusta.king@lovelace.com') 
    new_entry = book.entries[0] 

    expect(new_entry.name).to eq('Ada Lovelace') 
    expect(new_entry.phone_number).to eq('010.012.1815') 
    expect(new_entry.email).to eq('augusta.king@lovelace.com') 
end 

und:

it "adds the correct information to entries" do 
    # book = AddressBook.new # => Replaced by line 4 
    book.add_entry('Ada Lovelace', '010.012.1815', 'augusta.king@lovelace.com') 
    new_entry = book.entries[0] 

    expect(new_entry.name).to eql('Ada Lovelace') 
    expect(new_entry.phone_number).to eql('010.012.1815') 
    expect(new_entry.email).to eql('augusta.king@lovelace.com') 
end 

Answer 1

Es gibt subtile Unterschiede hier, basierend auf der Art der Gleichheit im Vergleich verwendet wird.

Aus dem Rpsec docs:

Ruby exposes several different methods for handling equality: 

a.equal?(b) # object identity - a and b refer to the same object 
a.eql?(b) # object equivalence - a and b have the same value 
a == b # object equivalence - a and b have the same value with type conversions] 

eq verwendet den == Operator für den Vergleich und eql ignoriert Typkonvertierungen.