Abstract: Compare points are detected in a multi-threaded computing environment. One thread of the multi-threaded computing environment has reached a compare point for the one thread. The compare point for the one thread being a point at which results of executing a test case on the one thread is ready to be compared against expected results for that test case. A determination is made as to whether another thread of the multi-threaded computing environment has reached a compare point for the another thread. Execution of the another thread is continued, based on determining the another thread has not reached the compare point for the another thread. The test case of the one thread is, however, not re-executed.

Abstract: Embodiments of the present invention are directed to a computer-implemented method for building and executing test cases. A non-limiting example of the computer-implemented method includes building, using a processor, a master test case instruction stream including a plurality of instructions including a replaceable instruction. The computer-implemented method builds, using the processor, a test case instruction stream derivative including the plurality of instructions including a replacement instruction in lieu of the replaceable instruction, and predicts, using the processor, a predicted result of executing the test case instruction stream derivative in a test case environment. The computer-implemented method executes, using the processor, the test case instruction stream derivative on the test case environment to generate an actual test case result and compares, using the processor, the actual test case result with the predicted result to determine proper operation of the test case environment.

Abstract: A validation and testing method is provided. The validation and testing method is executable by a processor coupled to a memory. The validation and testing method includes inserting intermediary save points within an instruction stream. The method includes executing the instruction stream including the intermediary save points. The method includes executing a save operation for data in one or more registers at each of the one or more intermediary save points.

Abstract: A testing facility is provided to test the multithreading functionality of a computing environment. The testing of this functionality includes building independent instruction streams to test threads of a multi-threaded environment while honoring architecturally imposed common fields and constraints, if any, of the threads. Certain features may be enabled/disabled for all threads. The instruction streams generated for testing this functionality may vary from being identical for all the threads being tested to being totally different, such as having different architectures.

Abstract: A testing facility is provided to test the multithreading functionality of a computing environment. The testing of this functionality includes building independent instruction streams to test threads of a multi-threaded environment while honoring architecturally imposed common fields and constraints, if any, of the threads. Certain features may be enabled/disabled for all threads. The instruction streams generated for testing this functionality may vary from being identical for all the threads being tested to being totally different, such as having different architectures.

Abstract: Embodiments of the present invention are directed to a computer-implemented method for building and executing test cases. A non-limiting example of the computer-implemented method includes building, using a processor, a master test case instruction stream including a plurality of instructions including a replaceable instruction. The computer-implemented method builds, using the processor, a test case instruction stream derivative including the plurality of instructions including a replacement instruction in lieu of the replaceable instruction, and predicts, using the processor, a predicted result of executing the test case instruction stream derivative in a test case environment. The computer-implemented method executes, using the processor, the test case instruction stream derivative on the test case environment to generate an actual test case result and compares, using the processor, the actual test case result with the predicted result to determine proper operation of the test case environment.

Abstract: Compare points are detected in a multi-threaded computing environment. One thread of the multi-threaded computing environment has reached a compare point for the one thread. The compare point for the one thread being a point at which results of executing a test case on the one thread is ready to be compared against expected results for that test case. A determination is made as to whether another thread of the multi-threaded computing environment has reached a compare point for the another thread. Execution of the another thread is continued, based on determining the another thread has not reached the compare point for the another thread. The test case of the one thread is, however, not re-executed.

Abstract: A validation and testing method is provided. The validation and testing method is executable by a processor coupled to a memory. The validation and testing method includes inserting intermediary save points within an instruction stream. The method includes executing the instruction stream including the intermediary save points. The method includes executing a save operation for data in one or more registers at each of the one or more intermediary save points.

Abstract: A computer-implemented method includes executing one or more tests on a computing device. The computing device has Instruction Execution Protection (IEP), and each test of the one or more tests includes selectively setting one or more IEP bits of one or more page tables, where each IEP bit prevents code in a respective storage block from being executed. During the one or more tests, an IEP exception is detected, by a computer processor, each time an attempt is made to execute code in a storage block for which a respective IEP bit is set. Test results of the one or more tests are determined based on the detecting. A remedial action is performed in response to the test results of the one or more tests.

Abstract: Compare points are detected in a multi-threaded computing environment. One thread of the multi-threaded computing environment has reached a compare point for the one thread. The compare point for the one thread being a point at which results of executing a test case on the one thread is ready to be compared against expected results for that test case. A determination is made as to whether another thread of the multi-threaded computing environment has reached a compare point for the another thread. Execution of the another thread is continued, based on determining the another thread has not reached the compare point for the another thread. The test case of the one thread is, however, not re-executed.

Abstract: A computer-implemented method includes executing one or more tests on a computing device. The computing device has Instruction Execution Protection (IEP), and each test of the one or more tests includes selectively setting one or more IEP bits of one or more page tables, where each IEP bit prevents code in a respective storage block from being executed. During the one or more tests, an IEP exception is detected, by a computer processor, each time an attempt is made to execute code in a storage block for which a respective IEP bit is set. Test results of the one or more tests are determined based on the detecting. A remedial action is performed in response to the test results of the one or more tests.

Abstract: A computer-implemented method includes executing one or more tests on a computing device. The computing device has Instruction Execution Protection (IEP), and each test of the one or more tests includes selectively setting one or more IEP bits of one or more page tables, where each IEP bit prevents code in a respective storage block from being executed. During the one or more tests, an IEP exception is detected, by a computer processor, each time an attempt is made to execute code in a storage block for which a respective IEP bit is set. Test results of the one or more tests are determined based on the detecting. A remedial action is performed in response to the test results of the one or more tests.

Abstract: Compare points are detected in a multi-threaded computing environment. One thread of the multi-threaded computing environment has reached a compare point for the one thread. The compare point for the one thread being a point at which results of executing a test case on the one thread is ready to be compared against expected results for that test case. A determination is made as to whether another thread of the multi-threaded computing environment has reached a compare point for the another thread. Execution of the another thread is continued, based on determining the another thread has not reached the compare point for the another thread. The test case of the one thread is, however, not re-executed.

Abstract: A computer-implemented method includes executing one or more tests on a computing device. The computing device has Instruction Execution Protection (IEP), and each test of the one or more tests includes selectively setting one or more IEP bits of one or more page tables, where each IEP bit prevents code in a respective storage block from being executed. During the one or more tests, an IEP exception is detected, by a computer processor, each time an attempt is made to execute code in a storage block for which a respective IEP bit is set. Test results of the one or more tests are determined based on the detecting. A remedial action is performed in response to the test results of the one or more tests.

Abstract: Compare points are detected in a multi-threaded computing environment. One thread of the multi-threaded computing environment has reached a compare point for the one thread. The compare point for the one thread being a point at which results of executing a test case on the one thread is ready to be compared against expected results for that test case. A determination is made as to whether another thread of the multi-threaded computing environment has reached a compare point for the another thread. Execution of the another thread is continued, based on determining the another thread has not reached the compare point for the another thread. The test case of the one thread is, however, not re-executed.

Abstract: Compare points are detected in a multi-threaded computing environment. One thread of the multi-threaded computing environment has reached a compare point for the one thread. The compare point for the one thread being a point at which results of executing a test case on the one thread is ready to be compared against expected results for that test case. A determination is made as to whether another thread of the multi-threaded computing environment has reached a compare point for the another thread. Execution of the another thread is continued, based on determining the another thread has not reached the compare point for the another thread. The test case of the one thread is, however, not re-executed.

Abstract: Compare points are detected in a multi-threaded computing environment. One thread of the multi-threaded computing environment has reached a compare point for the one thread. The compare point for the one thread being a point at which results of executing a test case on the one thread is ready to be compared against expected results for that test case. A determination is made as to whether another thread of the multi-threaded computing environment has reached a compare point for the another thread. Execution of the another thread is continued, based on determining the another thread has not reached the compare point for the another thread. The test case of the one thread is, however, not re-executed.

Abstract: Compare points are detected in a multi-threaded computing environment. One thread of the multi-threaded computing environment has reached a compare point for the one thread. The compare point for the one thread being a point at which results of executing a test case on the one thread is ready to be compared against expected results for that test case. A determination is made as to whether another thread of the multi-threaded computing environment has reached a compare point for the another thread. Execution of the another thread is continued, based on determining the another thread has not reached the compare point for the another thread. The test case of the one thread is, however, not re-executed.

Abstract: A testing facility is provided to test the multithreading functionality of a computing environment. The testing of this functionality includes building independent instruction streams to test threads of a multi-threaded environment while honoring architecturally imposed common fields and constraints, if any, of the threads. Certain features may be enabled/disabled for all threads. The instruction streams generated for testing this functionality may vary from being identical for all the threads being tested to being totally different, such as having different architectures.

Abstract: Compare points are detected in a multi-threaded computing environment. One thread of the multi-threaded computing environment has reached a compare point for the one thread. The compare point for the one thread being a point at which results of executing a test case on the one thread is ready to be compared against expected results for that test case. A determination is made as to whether another thread of the multi-threaded computing environment has reached a compare point for the another thread. Execution of the another thread is continued, based on determining the another thread has not reached the compare point for the another thread. The test case of the one thread is, however, not re-executed.