nim-ranges/tests/tstackarrays.nim

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import
unittest, math,
../ranges/stackarray
suite "Stack arrays":
test "Basic operations work as expected":
var arr = allocStackArray(int, 10)
check:
type(arr[0]) is int
arr.len == 10
# all items should be initially zero
for i in arr: check i == 0
for i in 0 .. arr.high: check arr[i] == 0
arr[0] = 3
arr[5] = 10
arr[9] = 6
check:
sum(arr.toOpenArray) == 19
arr[5] == 10
test "Allocating with a negative size throws a RangeError":
expect RangeError:
var arr = allocStackArray(string, -1)
test "The array access is bounds-checked":
var arr = allocStackArray(string, 3)
arr[2] = "test"
check arr[2] == "test"
expect RangeError:
arr[3] = "another test"