nac3/nac3core/irrt/test/test_slice.hpp

#pragma once

#include <irrt_everything.hpp>
#include <test/includes.hpp>

namespace test {
namespace slice {
void test_slice_normal() {
    // Normal situation
    BEGIN_TEST();

    UserSlice user_slice;
    user_slice.set_stop(5);

    Slice slice = user_slice.indices(100);

    printf("%d, %d, %d\n", slice.start, slice.stop, slice.step);

    assert_values_match(0, slice.start);
    assert_values_match(5, slice.stop);
    assert_values_match(1, slice.step);
}

void test_slice_start_too_large() {
    // Start is too large and should be clamped to length
    BEGIN_TEST();

    UserSlice user_slice;
    user_slice.set_start(400);

    Slice slice = user_slice.indices(100);

    assert_values_match(100, slice.start);
    assert_values_match(100, slice.stop);
    assert_values_match(1, slice.step);
}

void test_slice_negative_start_stop() {
    // Negative start/stop should be resolved
    BEGIN_TEST();

    UserSlice user_slice;
    user_slice.set_start(-10);
    user_slice.set_stop(-5);

    Slice slice = user_slice.indices(100);

    assert_values_match(90, slice.start);
    assert_values_match(95, slice.stop);
    assert_values_match(1, slice.step);
}

void test_slice_only_negative_step() {
    // Things like `[::-5]` should be handled correctly
    BEGIN_TEST();

    UserSlice user_slice;
    user_slice.set_step(-5);

    Slice slice = user_slice.indices(100);

    assert_values_match(99, slice.start);
    assert_values_match(-1, slice.stop);
    assert_values_match(-5, slice.step);
}

void test_slice_step_zero() {
    // Step = 0 is a value error
    BEGIN_TEST();

    ErrorContext errctx = create_testing_errctx();

    UserSlice user_slice;
    user_slice.set_start(2);
    user_slice.set_stop(12);
    user_slice.set_step(0);

    Slice slice;
    user_slice.indices_checked(&errctx, 100, &slice);

    assert_errctx_has_exception(&errctx, errctx.exceptions->value_error);
}

void run() {
    test_slice_normal();
    test_slice_start_too_large();
    test_slice_negative_start_stop();
    test_slice_only_negative_step();
    test_slice_step_zero();
}
}  // namespace slice
}  // namespace test