+ check_string(utf8_casefold_canon("", 0, 0), "");
+}
+
+struct {
+ const char *in;
+ const char *expect[10];
+} wtest[] = {
+ /* Empty string */
+ { "", { 0 } },
+ /* Only whitespace and punctuation */
+ { " ", { 0 } },
+ { " ' ", { 0 } },
+ { " ! ", { 0 } },
+ { " \"\" ", { 0 } },
+ { " @ ", { 0 } },
+ /* Basics */
+ { "wibble", { "wibble", 0 } },
+ { " wibble", { "wibble", 0 } },
+ { " wibble ", { "wibble", 0 } },
+ { "wibble ", { "wibble", 0 } },
+ { "wibble spong", { "wibble", "spong", 0 } },
+ { " wibble spong", { "wibble", "spong", 0 } },
+ { " wibble spong ", { "wibble", "spong", 0 } },
+ { "wibble spong ", { "wibble", "spong", 0 } },
+ { "wibble spong splat foo zot ", { "wibble", "spong", "splat", "foo", "zot", 0 } },
+ /* Apostrophes */
+ { "wibble 'spong", { "wibble", "spong", 0 } },
+ { " wibble's", { "wibble's", 0 } },
+ { " wibblespong' ", { "wibblespong", 0 } },
+ { "wibble sp''ong ", { "wibble", "sp", "ong", 0 } },
+};
+#define NWTEST (sizeof wtest / sizeof *wtest)
+
+static void test_words(void) {
+ size_t t, nexpect, ngot, i;
+ int right;
+
+ fprintf(stderr, "test_words\n");
+ for(t = 0; t < NWTEST; ++t) {
+ char **got = utf8_word_split(wtest[t].in, strlen(wtest[t].in), &ngot, 0);
+
+ for(nexpect = 0; wtest[t].expect[nexpect]; ++nexpect)
+ ;
+ if(nexpect == ngot) {
+ for(i = 0; i < ngot; ++i)
+ if(strcmp(wtest[t].expect[i], got[i]))
+ break;
+ right = i == ngot;
+ } else
+ right = 0;
+ if(!right) {
+ fprintf(stderr, "word split %zu failed\n", t);
+ fprintf(stderr, "input: %s\n", wtest[t].in);
+ fprintf(stderr, " | %-30s | %-30s\n",
+ "expected", "got");
+ for(i = 0; i < nexpect || i < ngot; ++i) {
+ const char *e = i < nexpect ? wtest[t].expect[i] : "<none>";
+ const char *g = i < ngot ? got[i] : "<none>";
+ fprintf(stderr, " %2zu | %-30s | %-30s\n", i, e, g);
+ }
+ count_error();
+ }
+ ++tests;
+ }