Convert ImplFontCache to use o3tl::lru_map

We still do our own cleanup of the LRU map, as we can't drop
any fonts in use.

Change-Id: I8ec5c6ce8f80893635621357e9085950e7010f5b
Reviewed-on: https://gerrit.libreoffice.org/61455
Tested-by: Jenkins
Reviewed-by: Jan-Marek Glogowski <glogow@fbihome.de>

1 files changed, 20 insertions, 0 deletions

diff --git a/o3tl/qa/test-lru_map.cxx b/o3tl/qa/test-lru_map.cxx
index 7a4886d3be3e..a7f9777e2c5f 100644
--- a/o3tl/qa/test-lru_map.cxx
+++ b/o3tl/qa/test-lru_map.cxx
@@ -28,6 +28,7 @@ public:
     void testLruRemoval();
     void testCustomHash();
     void testRemoveIf();
+    void testNoAutoCleanup();
 
     CPPUNIT_TEST_SUITE(lru_map_test);
     CPPUNIT_TEST(testBaseUsage);
@@ -36,6 +37,7 @@ public:
     CPPUNIT_TEST(testLruRemoval);
     CPPUNIT_TEST(testCustomHash);
     CPPUNIT_TEST(testRemoveIf);
+    CPPUNIT_TEST(testNoAutoCleanup);
     CPPUNIT_TEST_SUITE_END();
 };
 
@@ -289,6 +291,24 @@ void lru_map_test::testRemoveIf()
     CPPUNIT_ASSERT_EQUAL(size_t(0), lru.size());
 }
 
+void lru_map_test::testNoAutoCleanup()
+{
+    o3tl::lru_map<int, int> lru(0);
+    CPPUNIT_ASSERT_EQUAL(size_t(0), lru.size());
+    lru.insert({0,0});
+    lru.insert({1,1});
+    CPPUNIT_ASSERT_EQUAL(size_t(2), lru.size());
+    lru.insert({0,0});
+    CPPUNIT_ASSERT_EQUAL(size_t(2), lru.size());
+
+    int i = 0;
+    for (auto &rPair : lru)
+    {
+        CPPUNIT_ASSERT_EQUAL(i, rPair.first);
+        ++i;
+    }
+}
+
 CPPUNIT_TEST_SUITE_REGISTRATION(lru_map_test);
 
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