72 lines
2.2 KiB
C++
72 lines
2.2 KiB
C++
// Copyright 2018 The gVisor Authors.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#include <errno.h>
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#include <sched.h>
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#include "gtest/gtest.h"
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#include "test/util/test_util.h"
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namespace gvisor {
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namespace testing {
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namespace {
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// In linux, pid is limited to 29 bits because how futex is implemented.
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constexpr int kImpossiblePID = (1 << 29) + 1;
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TEST(SchedGetparamTest, ReturnsZero) {
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struct sched_param param;
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EXPECT_THAT(sched_getparam(getpid(), ¶m), SyscallSucceeds());
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EXPECT_EQ(param.sched_priority, 0);
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EXPECT_THAT(sched_getparam(/*pid=*/0, ¶m), SyscallSucceeds());
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EXPECT_EQ(param.sched_priority, 0);
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}
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TEST(SchedGetparamTest, InvalidPIDReturnsEINVAL) {
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struct sched_param param;
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EXPECT_THAT(sched_getparam(/*pid=*/-1, ¶m),
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SyscallFailsWithErrno(EINVAL));
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}
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TEST(SchedGetparamTest, ImpossiblePIDReturnsESRCH) {
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struct sched_param param;
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EXPECT_THAT(sched_getparam(kImpossiblePID, ¶m),
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SyscallFailsWithErrno(ESRCH));
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}
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TEST(SchedGetparamTest, NullParamReturnsEINVAL) {
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EXPECT_THAT(sched_getparam(0, nullptr), SyscallFailsWithErrno(EINVAL));
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}
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TEST(SchedGetschedulerTest, ReturnsSchedOther) {
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EXPECT_THAT(sched_getscheduler(getpid()),
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SyscallSucceedsWithValue(SCHED_OTHER));
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EXPECT_THAT(sched_getscheduler(/*pid=*/0),
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SyscallSucceedsWithValue(SCHED_OTHER));
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}
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TEST(SchedGetschedulerTest, ReturnsEINVAL) {
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EXPECT_THAT(sched_getscheduler(/*pid=*/-1), SyscallFailsWithErrno(EINVAL));
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}
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TEST(SchedGetschedulerTest, ReturnsESRCH) {
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EXPECT_THAT(sched_getscheduler(kImpossiblePID), SyscallFailsWithErrno(ESRCH));
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}
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} // namespace
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} // namespace testing
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} // namespace gvisor
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