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//===-- Unittests for sched_get_priority_{min,max} ------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#include "src/errno/libc_errno.h"
#include "src/sched/sched_get_priority_max.h"
#include "src/sched/sched_get_priority_min.h"
#include "test/UnitTest/Test.h"
#include <sched.h>
TEST(LlvmLibcSchedGetPriorityTest, HandleBadPolicyTest) {
// Test arbitrary values for which there is no policy.
{
int policy = -1;
int max_priority = __llvm_libc::sched_get_priority_max(policy);
ASSERT_EQ(max_priority, -1);
ASSERT_EQ(libc_errno, EINVAL);
int min_priority = __llvm_libc::sched_get_priority_min(policy);
ASSERT_EQ(min_priority, -1);
ASSERT_EQ(libc_errno, EINVAL);
}
{
int policy = 30;
int max_priority = __llvm_libc::sched_get_priority_max(policy);
ASSERT_EQ(max_priority, -1);
ASSERT_EQ(libc_errno, EINVAL);
int min_priority = __llvm_libc::sched_get_priority_min(policy);
ASSERT_EQ(min_priority, -1);
ASSERT_EQ(libc_errno, EINVAL);
}
{
int policy = 80;
int max_priority = __llvm_libc::sched_get_priority_max(policy);
ASSERT_EQ(max_priority, -1);
ASSERT_EQ(libc_errno, EINVAL);
int min_priority = __llvm_libc::sched_get_priority_min(policy);
ASSERT_EQ(min_priority, -1);
ASSERT_EQ(libc_errno, EINVAL);
}
{
int policy = 110;
int max_priority = __llvm_libc::sched_get_priority_max(policy);
ASSERT_EQ(max_priority, -1);
ASSERT_EQ(libc_errno, EINVAL);
int min_priority = __llvm_libc::sched_get_priority_min(policy);
ASSERT_EQ(min_priority, -1);
ASSERT_EQ(libc_errno, EINVAL);
}
}
TEST(LlvmLibcSchedGetPriorityTest, SmokeTest) {
libc_errno = 0;
// We Test:
// SCHED_OTHER, SCHED_FIFO, SCHED_RR
// Linux specific test could also include:
// SCHED_BATCH, SCHED_ISO, SCHED_IDLE, SCHED_DEADLINE
{
int policy = SCHED_OTHER;
int max_priority = __llvm_libc::sched_get_priority_max(policy);
ASSERT_GE(max_priority, 0);
ASSERT_EQ(libc_errno, 0);
int min_priority = __llvm_libc::sched_get_priority_min(policy);
ASSERT_GE(min_priority, 0);
ASSERT_EQ(libc_errno, 0);
ASSERT_LE(max_priority, 99);
ASSERT_GE(min_priority, 0);
ASSERT_GE(max_priority, min_priority);
}
{
int policy = SCHED_FIFO;
int max_priority = __llvm_libc::sched_get_priority_max(policy);
ASSERT_GE(max_priority, 0);
ASSERT_EQ(libc_errno, 0);
int min_priority = __llvm_libc::sched_get_priority_min(policy);
ASSERT_GE(min_priority, 0);
ASSERT_EQ(libc_errno, 0);
ASSERT_LE(max_priority, 99);
ASSERT_GE(min_priority, 0);
ASSERT_GT(max_priority, min_priority);
}
{
int policy = SCHED_RR;
int max_priority = __llvm_libc::sched_get_priority_max(policy);
ASSERT_GE(max_priority, 0);
ASSERT_EQ(libc_errno, 0);
int min_priority = __llvm_libc::sched_get_priority_min(policy);
ASSERT_GE(min_priority, 0);
ASSERT_EQ(libc_errno, 0);
ASSERT_LE(max_priority, 99);
ASSERT_GE(min_priority, 0);
ASSERT_GT(max_priority, min_priority);
}
}
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