Test apparatus and test method

1. A test apparatus that tests a device under test, comprising:

a test module section that tests the device under test;

a test control section that generates control packets for controlling the test module section; and

a connecting section that receives the control packets from the test control section and transmits the control packets to the test module section, wherein

the test module section includes a first test module that operates according to control packets having a first packet structure and a second test module that operates according to control packets having a second packet structure, which is obtained by adding an expansion region to a control packet having the first packet structure,

the test control section transmits control packets having the second packet structure to the connecting section, and

the connecting section (i) removes the expansion region from control packets having the second packet structure received from the test control section and transmits the removed-expansion-region control packets to the first test module, and (ii) transmits control packets having the second packet structure received from the test control section to the second test module.

2. The test apparatus according to claim 1 , wherein

the connecting section includes a converting section that removes the expansion region, and a storage section that stores the expansion region removed by the converting section.

3. The test apparatus according to claim 2 , wherein

when test module identification information, which is included in a control packet received from the test control section and indicates a type of the test module that transmitted the control packet, indicates the first test module, the connecting section removes the expansion region from the control packet, transmits the removed-expansion-region control packet to the first test module, and stores the removed expansion region in the storage section, and

when the test module identification information indicates the second test module, the connecting section transmits the control packet to the second test module.

4. The test apparatus according to claim 3 , wherein

the test control section generates control packets having the second packet structure to include the test module identification information indicating whether a destination of the control packet is the first test module, the second test module, or both the first test module and the second test module.

5. The test apparatus according to claim 4 , wherein

when the test module identification information indicates that the destination of the control packet is both the first test module and the second test module, the connecting section (i) transmits the control packet to the second test module and (ii) removes the expansion region from the control packet and transmits the removed-expansion-region control packet having the first packet structure to the first test module.

6. The test apparatus according to claim 2 , wherein

the connecting section generates a control packet having the second packet structure by using the converting section to add the expansion region stored in the storage section to a control packet having the first packet structure received from the first test module, and transmits the generated control packet having the second packet structure to the test control section, and

the connecting section transmits a control packet having the second packet structure received from the second test module to the test control section without passing the control packet having the second structure through the converting section.

7. The test apparatus according to claim 1 , wherein

the test control section generates the control packets to include in the expansion region thereof commands that can be performed by the second test module but cannot be performed by the first test module.

8. The test apparatus according to claim 7 , wherein

the test control section generates the control packets to include, in a region thereof other than the expansion region, a common command that can be used by both the first test module and the second test module and to include, in the expansion region, a plurality of subcommands that order a plurality of operations that are obtained by segmenting an operation ordered by the common command.

9. A method for testing a signal device under test using a test module section that includes a first test module that operates according to control packets having a first packet structure and a second test module that operates according to control packets having a second packet structure, which is obtained by adding an expansion region to a control packet having the first packet structure, the method comprising:

generating control packets having the second packet structure to control the test module section; and

(i) removing the expansion region from the control packets having the second packet structure and transmitting the removed-expansion-region control packets to the first test module, and (ii) transmitting the control packets having the second packet structure to the second test module.

10. A non-transitory recording medium storing thereon a program for causing a computer to function as a test apparatus comprising a test module section that tests a device under test, a test control section that generates control packets for controlling the test module section, and a connecting section that receives the control packets from the test control section and transmits the control packets to the test module section, wherein

the program causes the test module section to function as a first test module that operates according to control packets having a first packet structure and as a second test module that operates according to control packets having a second packet structure, which is obtained by adding an expansion region to a control packet having the first packet structure,

the program causes the test control section to transmit control packets having the second packet structure to the connecting section, and

the program causes the connecting section to (i) remove the expansion region from control packets having the second packet structure received from the test control section and transmit the removed-expansion-region control packets to the first test module, and to (ii) transmit control packets having the second packet structure received from the test control section to the second test module.