package imagerequest

import "testing"

// TestSourceKey_DiffersForEachSource checks that each source gets a key of
// 64 hex characters, the same each time, and that no two of these sources
// share one, also when they differ only by a ":" or "%" in the path or query.
func TestSourceKey_DiffersForEachSource(t *testing.T) {
	t.Parallel()

	sources := []Source{
		{Host: testHostCDN, Path: testPathCat},
		{Host: testHostCDN, Path: testPathCat, Query: "v=2"},
		{Host: "other.example.com", Path: testPathCat},
		{Host: testHostCDN, Path: "/c:d"},
		{Host: testHostCDN, Path: "/c", Query: "d:"},
		{Host: testHostCDN, Path: "/c%3Ad"},
	}

	seen := make(map[SourceKey]Source)

	for _, source := range sources {
		key := source.Key()
		t.Logf("Key() of %+v = %s", source, key)

		if len(key) != 64 {
			t.Errorf("Key() of %+v length = %d, want 64", source, len(key))
		}

		if again := source.Key(); again != key {
			t.Errorf("Key() of %+v not deterministic: %s vs %s", source, key, again)
		}

		if earlier, found := seen[key]; found {
			t.Errorf("Key() gave %+v and %+v the same key", earlier, source)
		}

		seen[key] = source
	}
}