popup: show the candidate page

tests/popup_test.c

@@ -4,8 +4,33 @@
 void
 popup_layout(struct ct *t)
 {
+	static const struct {
+		int first;
+		int shown;
+		int total;
+		char *want;
+	} markers[] = {
+		{ 0, 0,  0, "" },
+		{ 0, 9,  9, "" },
+		{ 0, 9, 10, "1-9/10" },
+		{ 9, 1, 10, "10-10/10" },
+		{ 0, 9, 18, "1-9/18" },
+		{ 9, 9, 18, "10-18/18" },
+		{ 9, 9, 32, "10-18/32" },
+		{ 18, 9, 32, "19-27/32" },
+		{ 27, 5, 32, "28-32/32" },
+	};
+	char buf[32];
 	Caret caret;
-	int x, y;
+	int i, n, x, y;
+
+	for(i = 0; i < nelem(markers); i++){
+		n = pagemarker(buf, sizeof buf, markers[i].first,
+			markers[i].shown, markers[i].total);
+		CT_EQ_INT(t, strlen(markers[i].want), n);
+		CT_CHECK(t, strcmp(markers[i].want, buf) == 0);
+	}
+	CT_EQ_INT(t, (1 + Maxdisp + 1) * Fontsz, Imgh);
 
 	memset(&caret, 0, sizeof caret);
 	popupposition(&caret, 40, 50, 800, 600, 100, 60, &x, &y);