Share D&D cited source traversal

internal/modules/dnd/shared/matching_test.go

@@ -0,0 +1,25 @@
+package shared
+
+import "testing"
+
+func TestContainsTokenSequence(t *testing.T) {
+	tests := []struct {
+		name  string
+		value string
+		query string
+		want  bool
+	}{
+		{name: "unicode apostrophe and case", value: "O’rIn\u2003ThOrN advances", query: "o'rin thorn", want: true},
+		{name: "multiword sequence", value: "Mira Thorn watches", query: "mira thorn", want: true},
+		{name: "nonconsecutive words", value: "Mira watches Thorn", query: "mira thorn", want: false},
+		{name: "short name is not substring", value: "A cart rolls past", query: "art", want: false},
+		{name: "empty query", value: "anything", query: " ", want: false},
+	}
+	for _, test := range tests {
+		t.Run(test.name, func(t *testing.T) {
+			if got := ContainsTokenSequence(test.value, test.query); got != test.want {
+				t.Fatalf("ContainsTokenSequence(%q, %q) = %t, want %t", test.value, test.query, got, test.want)
+			}
+		})
+	}
+}