806 results about "System under test" patented technology

Apparatus and methods facilitating a distributed approach to performance and functionality testing of location-sensitive wireless data communication systems and equipment are described. A plurality of test units, geographically distributed at arbitrary points in a three-dimensional volume surround the system or equipment under test. Each test unit generates test stimuli and records responses from the device under test, and emulates the effects of changes in spatial location within an actual wireless network environment. A central controller co-ordinates the set of test units to ensure that they act as a logical whole, and enables testing to be performed in a repeatable manner in spite of the variations introduced by the location sensitive characteristics of wireless data communication networks. The central controller also maintains a user interface that provides a unified view of the complete test system, and a unified view of the behavior of the system or equipment under test. For diagnostic purposes, the recorded responses may be regenerated to view any defects as many times as necessary to correct them. Alternatively, each test unit may have either wired network interface units, instead of a wireless interface unit to test systems or equipment forming part of a wired network portion in the wireless data communication system.

The method comprises: reading out the pre-configured test solution; according to the function type in said test solution, calling the relevant functional test script; said functional test script calls a browser to open the relevant webpage window of the Web application system under test, and records the identifier of the webpage window; said functional test script calls the browser interface to input the data and operation of current test solution into said webpage window to get test result.

The technology disclosed includes a software architecture for methods and devices used to test routers, switches and the like, particularly high volume infrastructure devices. In particular, this architecture associates test data stream definitions with emulated devices that send test frames or packets to and receives them from a system or device under test (“DUT”). By relating the test data stream definitions to definitions of the emulated devices that are coupled to the DUT, automation of test frame and/or test packet design improves, especially where some of the information needed to generate test frames and/or packets is dynamically generated during a test.

According to an embodiment of the present invention, a computer implemented method and system for automated test and retesting using an interactive interface provided by a computer processor comprising: a test case builder, comprising at least one processor, configured to automatically generate code for a test case; a test flow tool, comprising at least one processor, configured to generate a plurality of test flows for the test case; an execution engine, comprising at least one processor, configured to automatically execute the plurality of test flows on a system under test; and an output interface configured to receive output data from the system under test.

A method for synchronizing different components of a computer network system using meta-commands embedded in normal network packets. The data communication channel between different components of a computer network system can be used to transport meta-commands piggybacked in normal network packets, without modifying or compromising the validity of the protocol message. Embodiments of the method can be used for embedding test synchronization and control commands into the network packets sent through a device or system under test. The device or system under test can be an edge device, with the data communication channel carrying normal packets containing meta-commands embedded in the packets to synchronize the test control of the test clients and the test servers connected to the edge device.

The invention discloses a testing method and system based on a message, which are used for a multiprotocol tested system. Particularly, the method comprises the following steps of: obtaining a test case and analyzing an interface name, parameter values of test parameters and a predicated result out of the test case; determining an interface description file corresponding to the interface name and analyzing a protocol type and attribute information of the test parameters out of the interface description file; converting the parameter values according to the attribute information of the test parameters; splicing the converter parameter values to form a message; and calling a protocol communication processor corresponding to the protocol type to send the message to a tested system. Different interface description files are defined and generated according to different message protocol types so that the test parameters in the test case are converted into the parameter values meeting the protocols according the interface description files of the different protocol types, and the different protocol communication processors are called according to different protocol types to receive and send messages to the tested system; and therefore, the tested system with a plurality of protocols can be conveniently tested and a plurality of test tools do not need to be troublesomely replaced.

An apparatus and method for high-resolution reflectometry that operates simultaneously in both the time and frequency domains, utilizing time-frequency signal analysis and a chirp signal multiplied by a Gaussian time envelope. The Gaussian envelope provides time localization, while the chirp allows one to excite the system under test with a swept sinewave covering a frequency band of interest. High resolution in detection of the reflected signal is provided by a time-frequency cross correlation function. The high-accuracy localization of faults in a wire/cable can be achieved by measurement of time delay offset obtained from the frequency offset of the reflected signal. The apparatus enables one to execute an automated diagnostic procedure of a wire/cable under test by control of peripheral devices.

A distributed simulation system includes at least a first node and a second node. The first node is configured to simulate a first portion of a system under test using a first simulation mechanism. The second node is configured to simulate a second portion of the system under test using a second simulation mechanism different from the first simulation mechanism. The first node and the second node are configured to communicate during a simulation using a predefined grammar. In various embodiments, simulation mechanisms may include one or more of: a simulator and a simulation model of the portion of the system under test; a program coded to simulate the portion; a program designed to provide test stimulus, control, or test monitoring functions for the simulation as a whole; an emulator emulating the portion of the system under test, or a hardware implementation of the portion.

The invention relates to a universal satellite ground overall control test system, which consists of a front-end photoelectric conversion module, a measurement and control front-end equipment module, a central processing unit module, a display terminal module and a console module, wherein the front-end photoelectric conversion module is an external hardware interface of the ground overall controltest system and a tested system, and is internally connected with the measurement and control front-end equipment module; the measurement and control front-end equipment module finishes data interaction with the front-end photoelectric conversion module, and a rear end communicates with the central processing unit module and the console module; the central processing unit module receives downlinktelemetry data from the measurement and control front-end equipment module, finishes classifying and storing the data, forwards the data to the display terminal module, and simultaneously, is required to finish storing the uplink remote control information of the console module; the display terminal module receives the telemetry data from the central processing unit module, and finishes work in areal-time analysis way and a delay analysis way; and the console module transmits an uplink remote control instruction to the measurement and control front-end equipment module, and forwards uplink instruction information to the central processing unit module for filing.

A system for applying distributed software simulation techniques to hardware emulation may include a first hardware emulator mounted on a first expansion board at a first host, and a second hardware emulator mounted on a second expansion board at a second host. The first hardware emulator may be configured to emulate a first portion of a system under test, and the second hardware emulator may be configured to emulate a second portion of the system under test, and the first and second hardware emulators may coordinate an emulation of the system under test using one or more messages, i.e., a coordination of an emulation of the system under test may be accomplished using communications between the first and second hardware emulators.

An automated software test is provided which includes a functional model of a system to be tested. The automated software test is utilized to operate a system under test in accordance with specified facts, goals and rules. Quasi-random actions are taken within the system in accordance with specified rules and facts until a defined goal has been accomplished. Training the automated software test is accomplished by specifying a particular goal, i.e. identifying a particularly known defect, and thereafter running the test in a quasi-random fashion until the particular goal has been achieved. The number and nature of actions required to achieve that goal are logged and the process is then repeated until the shortest path required to achieve that goal has been determined. The log of actions which eventually reach a particularly defect may also be utilized a probable cause tree structure for future analysis.

Methods and apparatus for testing performance of an system under test are disclosed. The system under test is loaded with simulated traffic which may be generated from a single test port. The performance of the system under test under load may be tested.

A technique is disclosed for performing testing of an optical device under test (DUT). According to a specific embodiment, the DUT includes a plurality of DUT optical input ports and a plurality of DUT optical output ports. The testing may be performed by an optical switching testing system (OSTS) which includes a plurality of OSTS output ports optically connected to a plurality of DUT input ports, and a plurality of OSTS input ports optically connected to a plurality of DUT output ports. Components of the OSTS are configured in order to perform a specific test on the DUT. A first test scenario is configured at the DUT. At least one optical test signal is transmitted to at least one DUT input port. Test results may then be obtained by monitoring at least one DUT output port for the presence or absence of light. The test results are then analyzed for specific characteristics. According to a specific embodiment, the OSTS of the present invention may be adapted to automatically perform a plurality of testing operations on a selected plurality of different optical paths associated with the DUT. Such testing operations may include, for example, transmitting a plurality of optical test signals to a plurality of DUT input ports during a given test scenario, and/or monitoring a plurality of DUT output ports for test results during a given test scenario. According to a specific embodiment, the optical switch testing system of the present invention may be used to measure and verify selected characteristics associated with a device under test (DUT) or a system under test (SUT). Such characteristics may include, for example, optical cross talk, insertion loss, polarization dependent loss, path switching time, data integrity, optical path verification, optical path stability, etc.

A method and system comprising a diagnostic symptom tree system for diagnosing a failing system element causing a symptom in a system-under-test. A diagnostic symptom tree comprises symptom roots and dependent lower function nodes and sub-function nodes. Element nodes depend from the function or sub-function nodes, and a plurality of penultimate failure mode leaves depend from the element nodes. The function and sub-function nodes and the failure mode leaves comprise test information. Responsive to positive test results, the diagnostic symptom tree is configured to identify a function or sub-function or element node associated to a lowest symptom tree node or failure mode leaf for which a test is positive, or advise that no failing function or sub-function or element is found. In one aspect of the invention, nodes may include parameter values allowing successive selections of the nodes of the symptom tree for test iterations according to the parameter values.

The invention supplies software line up using program mapping method and its program line up system. The method includes the following steps: supplying testing agent by the tested target machine; the testing agent according to the testing data base to generate tested program symbol table and type list; it according to the preset script to map the variable and function in the symbol table and type list to variable container, generate script language mapping variable and function. The invention maps variable read-write and function call of the tested system into connate grammar of the script language which can increase software line up ability and line up script exploiting efficiency.