diff --git a/lib/library.cpp b/lib/library.cpp
index 4c886f699..396345ac7 100644
--- a/lib/library.cpp
+++ b/lib/library.cpp
@@ -187,13 +187,6 @@ Library::Container::Action Library::Container::actionFrom(const std::string& act
     return Container::Action::NO_ACTION;
 }
 
-// cppcheck-suppress unusedFunction - only used in unit tests
-bool Library::loadxmldata(const char xmldata[], std::size_t len)
-{
-    tinyxml2::XMLDocument doc;
-    return (tinyxml2::XML_SUCCESS == doc.Parse(xmldata, len)) && (load(doc).errorcode == ErrorCode::OK);
-}
-
 Library::Error Library::load(const tinyxml2::XMLDocument &doc)
 {
     const tinyxml2::XMLElement * const rootnode = doc.FirstChildElement();
diff --git a/lib/library.h b/lib/library.h
index ef0e7b3b8..c91079939 100644
--- a/lib/library.h
+++ b/lib/library.h
@@ -75,9 +75,6 @@ public:
     Error load(const char exename[], const char path[]);
     Error load(const tinyxml2::XMLDocument &doc);
 
-    /** this is used for unit tests */
-    bool loadxmldata(const char xmldata[], std::size_t len);
-
     struct AllocFunc {
         int groupId;
         int arg;
@@ -134,32 +131,6 @@ public:
         return af ? af->groupId : 0;
     }
 
-    /** set allocation id for function */
-    // cppcheck-suppress unusedFunction - test-only
-    void setalloc(const std::string &functionname, int id, int arg) {
-        mAlloc[functionname].groupId = id;
-        mAlloc[functionname].arg = arg;
-    }
-
-    // cppcheck-suppress unusedFunction - test-only
-    void setdealloc(const std::string &functionname, int id, int arg) {
-        mDealloc[functionname].groupId = id;
-        mDealloc[functionname].arg = arg;
-    }
-
-    // cppcheck-suppress unusedFunction - test-only
-    void setrealloc(const std::string &functionname, int id, int arg, int reallocArg = 1) {
-        mRealloc[functionname].groupId = id;
-        mRealloc[functionname].arg = arg;
-        mRealloc[functionname].reallocArg = reallocArg;
-    }
-
-    /** add noreturn function setting */
-    // cppcheck-suppress unusedFunction - test-only
-    void setnoreturn(const std::string& funcname, bool noreturn) {
-        mNoReturn[funcname] = noreturn ? FalseTrueMaybe::True : FalseTrueMaybe::False;
-    }
-
     static bool isCompliantValidationExpression(const char* p);
 
     /** is allocation type memory? */
diff --git a/test/testcondition.cpp b/test/testcondition.cpp
index 90458d433..4cb72fc55 100644
--- a/test/testcondition.cpp
+++ b/test/testcondition.cpp
@@ -46,7 +46,7 @@ private:
                            "<def>\n"
                            "  <function name=\"bar\"> <pure/> </function>\n"
                            "</def>";
-        ASSERT(settings1.library.loadxmldata(cfg, sizeof(cfg)));
+        settings1 = settingsBuilder(settings1).libraryxml(cfg, sizeof(cfg)).build();
 
         TEST_CASE(assignAndCompare);   // assignment and comparison don't match
         TEST_CASE(mismatchingBitAnd);  // overlapping bitmasks
diff --git a/test/testleakautovar.cpp b/test/testleakautovar.cpp
index ea0121769..b07ca4fbf 100644
--- a/test/testleakautovar.cpp
+++ b/test/testleakautovar.cpp
@@ -44,27 +44,29 @@ private:
     Settings settings;
 
     void run() override {
-        int id = 0;
-        while (!Library::ismemory(++id));
-        settings.library.setalloc("malloc", id, -1);
-        settings.library.setrealloc("realloc", id, -1);
-        settings.library.setdealloc("free", id, 1);
-        while (!Library::isresource(++id));
-        settings.library.setalloc("socket", id, -1);
-        settings.library.setdealloc("close", id, 1);
-        while (!Library::isresource(++id));
-        settings.library.setalloc("fopen", id, -1);
-        settings.library.setrealloc("freopen", id, -1, 3);
-        settings.library.setdealloc("fclose", id, 1);
-        settings.library.smartPointers["std::shared_ptr"];
-        settings.library.smartPointers["std::unique_ptr"];
-        settings.library.smartPointers["std::unique_ptr"].unique = true;
-
         const char xmldata[] = "<?xml version=\"1.0\"?>\n"
                                "<def>\n"
                                "  <podtype name=\"uint8_t\" sign=\"u\" size=\"1\"/>\n"
+                               "  <memory>\n"
+                               "    <alloc>malloc</alloc>\n"
+                               "    <realloc>realloc</realloc>\n"
+                               "    <dealloc>free</dealloc>\n"
+                               "  </memory>\n"
+                               "  <resource>\n"
+                               "    <alloc>socket</alloc>\n"
+                               "    <dealloc>close</dealloc>\n"
+                               "  </resource>\n"
+                               "  <resource>\n"
+                               "    <alloc>fopen</alloc>\n"
+                               "    <realloc realloc-arg=\"3\">freopen</realloc>\n"
+                               "    <dealloc>fclose</dealloc>\n"
+                               "  </resource>\n"
+                               "  <smart-pointer class-name=\"std::shared_ptr\"/>\n"
+                               "  <smart-pointer class-name=\"std::unique_ptr\">\n"
+                               "    <unique/>\n"
+                               "  </smart-pointer>\n"
                                "</def>";
-        ASSERT(settings.library.loadxmldata(xmldata, sizeof(xmldata)));
+        settings = settingsBuilder(settings).libraryxml(xmldata, sizeof(xmldata)).build();
 
         // Assign
         TEST_CASE(assign1);
diff --git a/test/testother.cpp b/test/testother.cpp
index 681569327..aa09d83ad 100644
--- a/test/testother.cpp
+++ b/test/testother.cpp
@@ -4681,9 +4681,15 @@ private:
               "}", nullptr, false, false);
         ASSERT_EQUALS("[test.cpp:3]: (style) Consecutive return, break, continue, goto or throw statements are unnecessary.\n", errout.str());
 
-        Settings settings;
-        settings.library.setnoreturn("exit", true);
-        settings.library.functions["exit"].argumentChecks[1] = Library::ArgumentChecks();
+        const char xmldata[] = "<?xml version=\"1.0\"?>\n"
+                               "<def>\n"
+                               "  <function name=\"exit\">\n"
+                               "    <noreturn>true</noreturn>\n"
+                               "    <arg nr=\"1\"/>\n"
+                               "  </function>\n"
+                               "</def>";
+        Settings settings = settingsBuilder().libraryxml(xmldata, sizeof(xmldata)).build();
+
         check("void foo() {\n"
               "    exit(0);\n"
               "    break;\n"
diff --git a/test/testvalueflow.cpp b/test/testvalueflow.cpp
index 55106bade..589a057b7 100644
--- a/test/testvalueflow.cpp
+++ b/test/testvalueflow.cpp
@@ -55,7 +55,7 @@ private:
                            "  <function name=\"strcpy\"> <arg nr=\"1\"><not-null/></arg> </function>\n"
                            "  <function name=\"abort\"> <noreturn>true</noreturn> </function>\n" // abort is a noreturn function
                            "</def>";
-        ASSERT_EQUALS(true, settings.library.loadxmldata(cfg, sizeof(cfg)));
+        settings = settingsBuilder(settings).libraryxml(cfg, sizeof(cfg)).build();
 
         TEST_CASE(valueFlowNumber);
         TEST_CASE(valueFlowString);