Add test to check if readding shader removes dna from m_pendingRemoval

Task-number: QTBUG-66498
Change-Id: Icb18a996c9384b3e41f296694d91b13677f054c4
Reviewed-by: Svenn-Arne Dragly <svenn-arne.dragly@qt.io>
Reviewed-by: Sean Harmer <sean.harmer@kdab.com>

1 files changed, 27 insertions, 0 deletions

diff --git a/tests/auto/render/shadercache/tst_shadercache.cpp b/tests/auto/render/shadercache/tst_shadercache.cpp
index 49628ef0f..261548d69 100644
--- a/tests/auto/render/shadercache/tst_shadercache.cpp
+++ b/tests/auto/render/shadercache/tst_shadercache.cpp
@@ -46,6 +46,7 @@ class tst_ShaderCache : public QObject
 
 private Q_SLOTS:
     void insert();
+    void insertAfterRemoval();
     void value();
     void removeRef();
     void purge();
@@ -81,6 +82,32 @@ void tst_ShaderCache::insert()
     QCOMPARE(cache.m_pendingRemoval.isEmpty(), true);
 }
 
+void tst_ShaderCache::insertAfterRemoval()
+{
+    // GIVEN
+    ShaderCache cache;
+    auto dna = ProgramDNA(12345);
+    auto nodeId = QNodeId::createId();
+
+    // WHEN
+    QOpenGLShaderProgram *shaderProgram = new QOpenGLShaderProgram();
+    cache.insert(dna, nodeId, shaderProgram);
+    cache.getShaderProgramAndAddRef(dna, nodeId);
+    cache.removeRef(dna, nodeId);
+    shaderProgram = cache.getShaderProgramAndAddRef(dna, nodeId);
+
+    // THEN
+    QVERIFY(!cache.m_pendingRemoval.contains(dna));
+
+    // WHEN
+    cache.removeRef(dna, nodeId);
+    cache.getShaderProgramAndAddRef(dna, nodeId);
+    cache.purge();
+
+    // THEN
+    QCOMPARE(cache.m_programHash.size(), 1);
+}
+
 void tst_ShaderCache::value()
 {
     // GIVEN