MeshTools: avoid global state in Tipsify test.

src/Magnum/MeshTools/Test/TipsifyTest.cpp

@@ -30,16 +30,11 @@
 
 namespace Magnum { namespace MeshTools { namespace Test {
 
-class TipsifyTest: public TestSuite::Tester {
-    public:
-        TipsifyTest();
+struct TipsifyTest: TestSuite::Tester {
+    explicit TipsifyTest();
 
     void buildAdjacency();
     void tipsify();
-
-    private:
-        std::vector<UnsignedInt> indices;
-        std::size_t vertexCount;
 };
 
 /*
@@ -57,7 +52,8 @@ class TipsifyTest: public TestSuite::Tester {
 
 */
 
-TipsifyTest::TipsifyTest(): indices{
+namespace {
+    const std::vector<UnsignedInt> Indices{
         4, 1, 0,
         10, 9, 13,
         6, 3, 2,
@@ -80,14 +76,20 @@ TipsifyTest::TipsifyTest(): indices{
         14, 11, 10,
 
         16, 17, 18
-}, vertexCount(19) {
+    };
+
+    constexpr std::size_t VertexCount = 19;
+}
+
+TipsifyTest::TipsifyTest() {
     addTests({&TipsifyTest::buildAdjacency,
               &TipsifyTest::tipsify});
 }
 
 void TipsifyTest::buildAdjacency() {
+    std::vector<UnsignedInt> indices = Indices;
     std::vector<UnsignedInt> liveTriangleCount, neighborOffset, neighbors;
-    Implementation::Tipsify(indices, vertexCount).buildAdjacency(liveTriangleCount, neighborOffset, neighbors);
+    Implementation::Tipsify(indices, VertexCount).buildAdjacency(liveTriangleCount, neighborOffset, neighbors);
 
     CORRADE_COMPARE(liveTriangleCount, (std::vector<UnsignedInt>{
         1, 3, 3, 2,
@@ -131,7 +133,8 @@ void TipsifyTest::buildAdjacency() {
 }
 
 void TipsifyTest::tipsify() {
-    MeshTools::tipsify(indices, vertexCount, 3);
+    std::vector<UnsignedInt> indices = Indices;
+    MeshTools::tipsify(indices, VertexCount, 3);
 
     CORRADE_COMPARE(indices, (std::vector<UnsignedInt>{
         4, 1, 0,