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Implement the 4 empty function bodies in specs/tri/utils/random.t27 #3870

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Merged
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Sep 17, 2026
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Implement the 4 empty function bodies in specs/tri/utils/random.t27 #3870

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20 changes: 10 additions & 10 deletions specs/tri/utils/random.t27
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Original file line number Diff line number Diff line change
Expand Up @@ -60,39 +60,39 @@ module TriRandom;
// TDD: Tests (from .tri behaviors)
// ═══════════════════════════════════════════════════════════

test init_basic_case
test "init_basic_case"
given input = default_input()
when result = init(input)
then result != undefined

test next_basic_case
test "next_basic_case"
given input = default_input()
when result = next(input)
then result != undefined

test range_basic_case
test "range_basic_case"
given input = default_input()
when result = range(input)
then result != undefined

test range_inclusive_basic_case
test "range_inclusive_basic_case"
given input = default_input()
when result = range_inclusive(input)
then result != undefined

test init_replaces_the_zero_seed
test "init_replaces_the_zero_seed"
given rng = init(0)
then rng.state != 0

test the_multiplier_is_the_star_in_xorshift64_star
test "the_multiplier_is_the_star_in_xorshift64_star"
// Verify: the output stage multiplies by 2685821657736338717, which is
// odd and therefore invertible modulo 2^64 — it scrambles the bits
// without ever mapping two states onto one output
given multiplier = 2685821657736338717
when parity = multiplier % 2
then parity == 1

test range_endpoints_bound_a_half_open_interval
test "range_endpoints_bound_a_half_open_interval"
// Verify: range(lo, hi) spans hi - lo values and range_inclusive spans one
// more, which is the only difference between the two entry points
given lo = 3
Expand All @@ -101,18 +101,18 @@ module TriRandom;
and inclusive = hi - lo + 1
then half_open == 4 and inclusive == 5

test next_follows_xorshift64_star_algorithm
test "next_follows_xorshift64_star_algorithm"
given rng = init(12345)
when first = next(rng)
and second = next(rng)
then first != second

test range_returns_zero_for_max_zero
test "range_returns_zero_for_max_zero"
given rng = init(42)
when result = range(rng, 0)
then result == 0

test range_inclusive_handles_single_value_range
test "range_inclusive_handles_single_value_range"
given rng = init(42)
when result = range_inclusive(rng, 5, 5)
then result == 5
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