1. A method, executed by a computer, for testing internationalization software that performs processing by referring to an externalized resource file, comprising the steps of: reading data from the externalized resource file written in a first language; generating a test resource file written in a second language from the externalized resource file written in the first language by converting characters of the first language contained in the data into the characters of the second language with reference to a conversion table where the characters of the first language are associated one for one with the characters of the second language; creating character codes for representing the characters of the first language and the characters of the second language; creating mapping between the first language and the second language such that a number of character codes in the second language is greater than the number of character codes in the first language; extracting a key attached to a character string from an item read from the externalized resource file and assigning it to a variable key; writing the variable key to the test resource file; assigning variables to each of the characters in the character string and comparing each of the characters in the character string for a boundary character; executing the internationalization software; and testing output information outputted from the internationalization software and displayed on a display screen as a result of the processing with reference to the test resource file as the externalized resource file, with reference to one of a plurality of fonts prepared for each test category of the internationalization software, in response to a switching of the fonts; wherein character codes included in the output information are classified into any of three groups of: a first group composed of a plurality of character corresponding to a plurality of characters in the first language, which are not suppose to be included in the output information; a second group composed of a plurality of character codes corresponding to the character in the second language included in the conversion table, which are supposed to be included in the output information; and a third group composed of a plurality of character codes not corresponding to any of a plurality of characters in the first language and the plurality of characters in the second language included in the conversion table, which are not supposed to be included in the output information; the test categories included a character string confirmation for confirming character strings included in the externalized resource file written in the first language, and the fonts used for said character string confirmation relate character shapes of the characters in the first language where the character codes of the characters in the second language are regarded as the characters after conversion on the occasion of generating the test resource file, to plurality of said character codes included in the second group, respectively, and, relate character shapes of the characters in the first language corresponding to character codes to a plurality of said character codes included in the first group without modification; and the plurality of fonts except for fonts used the character string confirmation relate a first same character shape or a plurality of different character shape to the character codes included in any one group of the first to the third groups, which are test objects in corresponding test items respectively, and, relate a second same character shape, which is different from the first same character shape to character codes included in any remaining two groups of the first to the third groups, respectively, and a character code that is a test object and the other character codes are distinguishable on the display of the output information using the fonts.
1. A method, executed by a computer, for testing internationalization software that performs processing by referring to an externalized resource file, comprising the steps of: reading data from the externalized resource file written in a first language; generating a test resource file written in a second language from the externalized resource file written in the first language by converting characters of the first language contained in the data into the characters of the second language with reference to a conversion table where the characters of the first language are associated one for one with the characters of the second language; creating character codes for representing the characters of the first language and the characters of the second language; creating mapping between the first language and the second language such that a number of character codes in the second language is greater than the number of character codes in the first language; extracting a key attached to a character string from an item read from the externalized resource file and assigning it to a variable key; writing the variable key to the test resource file; assigning variables to each of the characters in the character string and comparing each of the characters in the character string for a boundary character; executing the internationalization software; and testing output information outputted from the internationalization software and displayed on a display screen as a result of the processing with reference to the test resource file as the externalized resource file, with reference to one of a plurality of fonts prepared for each test category of the internationalization software, in response to a switching of the fonts; wherein character codes included in the output information are classified into any of three groups of: a first group composed of a plurality of character corresponding to a plurality of characters in the first language, which are not suppose to be included in the output information; a second group composed of a plurality of character codes corresponding to the character in the second language included in the conversion table, which are supposed to be included in the output information; and a third group composed of a plurality of character codes not corresponding to any of a plurality of characters in the first language and the plurality of characters in the second language included in the conversion table, which are not supposed to be included in the output information; the test categories included a character string confirmation for confirming character strings included in the externalized resource file written in the first language, and the fonts used for said character string confirmation relate character shapes of the characters in the first language where the character codes of the characters in the second language are regarded as the characters after conversion on the occasion of generating the test resource file, to plurality of said character codes included in the second group, respectively, and, relate character shapes of the characters in the first language corresponding to character codes to a plurality of said character codes included in the first group without modification; and the plurality of fonts except for fonts used the character string confirmation relate a first same character shape or a plurality of different character shape to the character codes included in any one group of the first to the third groups, which are test objects in corresponding test items respectively, and, relate a second same character shape, which is different from the first same character shape to character codes included in any remaining two groups of the first to the third groups, respectively, and a character code that is a test object and the other character codes are distinguishable on the display of the output information using the fonts. 2. The method according to claim 1 , wherein the conversion table relates a portion of the characters in the first language one for one to characters, which would likely cause a problem in terms of display, among the characters in the second language, and adding different characters of the second language that would likely cause a problem before and after the first character of the character string of the first language for each item in the externalized resource file.