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[ion/utf8] next/previousGlyphPosition methods and tests

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This commit is contained in:
Léa Saviot
2019-06-21 11:34:33 +02:00
committed by EmilieNumworks
parent fb80cd3271
commit 1043426c40
3 changed files with 52 additions and 0 deletions
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26
ion/test/utf8_decoder.cpp
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@@ -1,5 +1,6 @@
#include <quiz.h>
#include <ion/unicode/utf8_decoder.h>
#include <ion/unicode/utf8_helper.h>
void assert_decodes_to(const char * string, CodePoint c) {
UTF8Decoder d(string);
@@ -12,6 +13,18 @@ void assert_previous_code_point_is_to(const char * string, const char * stringPo
quiz_assert(d.previousCodePoint() == c);
}
void assert_code_point_at_next_glyph_position_is(const char * string, CodePoint c) {
UTF8Decoder d(string);
d.nextGlyphPosition();
quiz_assert(d.nextCodePoint() == c);
}
void assert_code_point_at_previous_glyph_position_is(const char * string, const char * stringPosition, CodePoint c) {
UTF8Decoder d(string, stringPosition);
d.previousGlyphPosition();
quiz_assert(d.nextCodePoint() == c);
}
QUIZ_CASE(ion_utf8_decode_forward) {
assert_decodes_to("\x20", 0x20);
assert_decodes_to("\xC2\xA2", 0xA2);
@@ -25,3 +38,16 @@ QUIZ_CASE(ion_utf8_decode_backwards) {
assert_previous_code_point_is_to(a, a+4, *(a+3));
assert_previous_code_point_is_to(a, a+6, *(a+5));
}
QUIZ_CASE(ion_utf8_decoder_next_glyph) {
const char * string = u8"a\u0065\u0301i";
assert_code_point_at_next_glyph_position_is(string, 'e');
assert_code_point_at_next_glyph_position_is(string+1, 'i');
}
QUIZ_CASE(ion_utf8_decoder_previous_glyph) {
const char * string = u8"a\u0065\u0301i";
const char * iPosition = UTF8Helper::CodePointSearch(string, 'i');
assert_code_point_at_previous_glyph_position_is(string, iPosition, 'e');
assert_code_point_at_previous_glyph_position_is(string,string+1, 'a');
}