edit_distance: calculate edit distance between strings

[ccan] / ccan / edit_distance / test / run-types-struct.c

diff --git a/ccan/edit_distance/test/run-types-struct.c b/ccan/edit_distance/test/run-types-struct.c
new file mode 100644 (file)
index 0000000..477ec5f
--- /dev/null
+++ b/ccan/edit_distance/test/run-types-struct.c
@@ -0,0 +1,56 @@
+/** @file
+ * Runnable tests for the edit_distance module using custom element and
+ * distance types.
+ *
+ * @copyright 2016 Kevin Locke <kevin@kevinlocke.name>
+ *            MIT license - see LICENSE file for details
+ */
+
+#include <limits.h>            /* UCHAR_MAX */
+
+#include <ccan/array_size/array_size.h>
+#include <ccan/tap/tap.h>
+
+struct color16 {
+       unsigned char r:5;
+       unsigned char g:6;
+       unsigned char b:5;
+};
+
+#define ed_elem struct color16
+#define ED_ELEM_EQUAL(e, f) (e.r == f.r && e.g == f.g && e.b == f.b)
+#define ED_HASH_ELEM(e) ((e.r << 11) | (e.g << 5) | e.b)
+#define ED_HASH_MAX USHRT_MAX
+
+#include <ccan/edit_distance/edit_distance.c>
+#include <ccan/edit_distance/edit_distance_dl.c>
+#include <ccan/edit_distance/edit_distance_lcs.c>
+#include <ccan/edit_distance/edit_distance_lev.c>
+#include <ccan/edit_distance/edit_distance_rdl.c>
+
+int main(void)
+{
+       const struct color16 src[] = {
+               {0, 0, 0},
+               {1, 1, 1},
+               {2, 2, 2},
+               {3, 3, 3}
+       };
+       const struct color16 tgt[] = {
+               {4, 4, 4},
+               {2, 2, 2},
+               {1, 1, 1},
+               {5, 5, 5}
+       };
+       ed_size slen = ARRAY_SIZE(src);
+       ed_size tlen = ARRAY_SIZE(tgt);
+
+       plan_tests(4);
+
+       ok1(edit_distance(src, slen, tgt, tlen, EDIT_DISTANCE_LCS) == 6);
+       ok1(edit_distance(src, slen, tgt, tlen, EDIT_DISTANCE_LEV) == 4);
+       ok1(edit_distance(src, slen, tgt, tlen, EDIT_DISTANCE_RDL) == 3);
+       ok1(edit_distance(src, slen, tgt, tlen, EDIT_DISTANCE_DL) == 3);
+
+       return exit_status();
+}