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test: increase coverage in graphviz round trip test #568

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Becheler merged 1 commit into from
Aug 12, 2026
+3 −2
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test: increase coverage in graphviz round trip test #568

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5 changes: 3 additions & 2 deletions test/graphviz_round_trip_test.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -36,11 +36,12 @@ using graph_t = boost::adjacency_list< boost::vecS, boost::vecS,
boost::directedS, vertex_props, edge_props >;

// First four are valid unquoted DOT ids/numerals
// the rest force quoting or escaping (space, embedded quote, digit-led identifier, multi-dot numeral).
// the rest force quoting or escaping: space, embedded quote, digit-led
// identifier, multi-dot numeral, a lone dash, and a leading non-id character.
const std::vector< std::string >& boundary_labels()
{
static const std::vector< std::string > labels = { "plain", "id_123", "42",
"-3.14", "has space", "has\"quote", "9lives", "1.2.3" };
"-3.14", "has space", "has\"quote", "9lives", "1.2.3", "-", "@home" };
return labels;
}

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