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Rooted by: Is the Number Simple
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  • Code 
    require "prime"

def is_prime(n)
  n.prime?
end
     Test Cases 
    Test.describe "Fixed Tests" do
  Test.it 'Basic Test Cases' do
    Test.assert_equals(is_prime(2), true)
    Test.assert_equals(is_prime(3), true)
    Test.assert_equals(is_prime(5), true)
    Test.assert_equals(is_prime(3571), true)
    Test.assert_equals(is_prime(0), false)
    Test.assert_equals(is_prime(1), false)
    Test.assert_equals(is_prime(4), false)
    Test.assert_equals(is_prime(3572), false)
    Test.assert_equals(is_prime(25), false)
  end
end
        
Test.describe "Random Tests" do
  Test.it "should pass random tests" do
    
    require "prime"
    
    sol = ->(n) do
      n.prime?
    end
    
    100.times do
        num = rand(0..10**rand(1..5))
        Test.assert_equals(is_prime(num), sol.(num))
    end
  end
end
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  • Code
    • is_prime = lambda n: n == 2 or n > 2 and n % 2 and all(n % i for i in range(3, int(n**.5) + 1, 2))
    • require "prime"
    • def is_prime(n)
    • n.prime?
    • end
     Test Cases
    • import codewars_test as test
    • from solution import is_prime
    • @test.describe("Fixed Tests")
    • def fixed_tests():
    • @test.it('Basic Test Cases')
    • def basic_test_cases():
    • test.assert_equals(is_prime(2), True)
    • test.assert_equals(is_prime(3), True)
    • test.assert_equals(is_prime(5), True)
    • test.assert_equals(is_prime(3571), True)
    • test.assert_equals(is_prime(0), False)
    • test.assert_equals(is_prime(1), False)
    • test.assert_equals(is_prime(4), False)
    • test.assert_equals(is_prime(3572), False)
    • test.assert_equals(is_prime(25), False)
    • Test.describe "Fixed Tests" do
    • Test.it 'Basic Test Cases' do
    • Test.assert_equals(is_prime(2), true)
    • Test.assert_equals(is_prime(3), true)
    • Test.assert_equals(is_prime(5), true)
    • Test.assert_equals(is_prime(3571), true)
    • Test.assert_equals(is_prime(0), false)
    • Test.assert_equals(is_prime(1), false)
    • Test.assert_equals(is_prime(4), false)
    • Test.assert_equals(is_prime(3572), false)
    • Test.assert_equals(is_prime(25), false)
    • end
    • end
    • @test.describe("Random Tests")
    • def random_tests():
    • Test.describe "Random Tests" do
    • Test.it "should pass random tests" do
    • from random import randint
    • require "prime"
    • for _ in range(100):
    • num = randint(0, 10**randint(1,5))
    • expected = num == 2 or num > 2 and num % 2 and all(num % i for i in range(3, int(num**.5) + 1, 2))
    • @test.it(f"testing for is_prime({num})")
    • def test_case():
    • test.assert_equals(is_prime(num), expected)
    • sol = ->(n) do
    • n.prime?
    • end
    • 100.times do
    • num = rand(0..10**rand(1..5))
    • Test.assert_equals(is_prime(num), sol.(num))
    • end
    • end
    • end