diff --git a/vlib/v/tests/array_init_test.v b/vlib/v/tests/array_init_test.v index 99afc3f47b..cc19a50cd3 100644 --- a/vlib/v/tests/array_init_test.v +++ b/vlib/v/tests/array_init_test.v @@ -39,3 +39,91 @@ fn test_array_init_with_len_no_default() { a3 := []bool{len: 3} assert '$a3' == '[false, false, false]' } + +fn test_array_int_full_options() { + println('Test array of int values') + + a := []int{len: 2, cap: 10} // this creates an array with 2 items, initial capacity 10, default value of array type + println('array a: length: ${a.len}, capacity: ${a.cap}, content: $a') + assert a.len == 2 + assert a.cap == 10 + assert a.cap >= a.len + assert a.str() == "[0, 0]" + + b := []int{len: 10, cap: 100, init: 1} // this creates an array with 10 one and initial capacity 100 elements, value given + _ := b.clone() // discard result variable, sample + println('array b: length: ${b.len}, capacity: ${b.cap}, content: $b') + assert b.len == 10 + assert b.cap == 100 + assert b.cap >= b.len + assert b.str() == "[1, 1, 1, 1, 1, 1, 1, 1, 1, 1]" + + mut c := []int{len: 2, cap: 10, init: 1} // this creates an array with 2 one and initial capacity 10 elements, value given + _ := c.clone() // discard result variable, sample + println('array c: length: ${c.len}, capacity: ${c.cap}, content: $c') + assert c.len == 2 + assert c.cap == 10 + assert c.cap >= c.len + assert c.str() == "[1, 1]" + // add some items to the array, to check limits + c << [3, 4, 5, 6, 7, 8, 9, 10] // add 8 items, from another array + // update one item, to have the right number in the sequence ... + c[1] = 2 + println('array c: length: ${c.len}, capacity: ${c.cap}, content now: $c') + assert c.len == 10 + assert c.cap == 10 + assert c.cap >= c.len + assert c.str() == "[1, 2, 3, 4, 5, 6, 7, 8, 9, 10]" + // add some more item after initial capacity, to ensure it's expandable + c << [11, 12, 13, 14, 15, 16] + println('array c: length: ${c.len}, capacity: ${c.cap}, content now: $c') + assert c.len == 16 + assert c.cap >= c.len + assert c.str() == "[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16]" +} + +fn test_array_string_full_options() { + println('Test array of string values') + + a := []string{len: 2, cap: 10} // this creates an array with 2 items, initial capacity 10, default value of array type + println('array a: length: ${a.len}, capacity: ${a.cap}') // ok + println('array a: length: ${a.len}, capacity: ${a.cap}, content: "$a"') + assert a.len == 2 + assert a.cap == 10 + assert a.cap >= a.len + assert a.str() == "['', '']" + + b := []string{len: 10, cap: 100, init: 'b'} // this creates an array with 10 'b', initial capacity 100 elements, value given + _ := b.clone() // discard result variable, sample + println('array b: length: ${b.len}, capacity: ${b.cap}') // ok + println('array b: length: ${b.len}, capacity: ${b.cap}, content: $b') + assert b.len == 10 + assert b.cap == 100 + assert b.cap >= b.len + assert b.str() == "['b', 'b', 'b', 'b', 'b', 'b', 'b', 'b', 'b', 'b']" + + mut c := []string{len: 2, cap: 10, init: 'c'} // this creates an array with 2 'c' and initial capacity 10 elements, value given + _ := c.clone() // discard result variable, sample + println('array c: length: ${c.len}, capacity: ${c.cap}, content: $c') + assert c.len == 2 + assert c.cap == 10 + assert c.cap >= c.len + assert c.str() == "['c', 'c']" + // add some items to the array, to check limits + c << ['c', 'c', 'c', 'c', 'c', 'c', 'c', 'c'] // add 8 items, from another array + // update some items, to have the right number in the sequence ... + c[0] = 'a' + c[1] = 'b' + println('array c: length: ${c.len}, capacity: ${c.cap}, content now: $c') + assert c.len == 10 + assert c.cap == 10 + assert c.cap >= c.len + assert c.str() == "['a', 'b', 'c', 'c', 'c', 'c', 'c', 'c', 'c', 'c']" + // add some more item after initial capacity, to ensure all is good + c << ['11', '12', '13', '14', '15', '16'] + // c << ['11', nil, '13', '14', '15', '16'] // check later if/how to handle this ... + println('array c: length: ${c.len}, capacity: ${c.cap}, content now: $c') + assert c.len == 16 + assert c.cap >= c.len + assert c.str() == "['a', 'b', 'c', 'c', 'c', 'c', 'c', 'c', 'c', 'c', '11', '12', '13', '14', '15', '16']" +}