File Data or Field Data

The following are hints to prepare test case/data.

• Include the DBCS characters whose second bytes have the same code points as the SBCS character significant to your program. Confirm that your program does not confuse those second bytes with such SBCS characters. For example, if your program searches for the path delimiter, 5CH, prepare the file name containing the DBCS character whose second byte is 5CH and confirm that your program does not confuse that second byte with the pass delimiter.

• Select critical characters which are encoded around the DBCS range. The following shows some cases of them:

  • Both 1) the DBCS characters whose second bytes are in the range of DBCS first byte and 2) ones whose second bytes are in SBCS code range

  • For Japanese,

    • Both the DBCS characters whose first bytes are in range 81H through 9FH and ones whose first bytes are in range E0H through FCH

    • Both the SBCS characters in range 20H through 7FH and ones in range A1H through DFH
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    Some Korea DBCS characters are encoded in the Japanese SBCS characters area. This kind of test data can be used to make sure that a program is DBCS enabled without hard-coding the DBCS code range.

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