package main

import "testing"

func TestHighlightMatches(t *testing.T) {
	cases := []struct{ name, query, want string }{
		{"Project Alpha", "alpha", "Project <strong>Alpha</strong>"},
		// Overlapping and adjacent spans merge.
		{"Project Alpha", "pro ject", "<strong>Project</strong> Alpha"},
		{"Project Alpha", "roj proj", "<strong>Proj</strong>ect Alpha"},
		{"a<b>&c", "b", "a&lt;<strong>b</strong>&gt;&amp;c"},
		{"Notes", "zzz", "Notes"},
		// Lowercasing changes the byte length: no highlight, still escaped.
		{"İstanbul <x>", "stan", "İstanbul &lt;x&gt;"},
	}
	for _, c := range cases {
		if got := string(highlightMatches(c.name, suggestTokens(c.query))); got != c.want {
			t.Errorf("highlightMatches(%q, %q) = %q, want %q", c.name, c.query, got, c.want)
		}
	}
}