Adding upstream version 4:7.4.7.upstream/4%7.4.7upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 416 insertions, 0 deletions

diff --git a/test/source/diff/diff.cxx b/test/source/diff/diff.cxx
new file mode 100644
index 000000000..097452665
--- /dev/null
+++ b/test/source/diff/diff.cxx
@@ -0,0 +1,416 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ */
+
+#define USE_CPPUNIT 1
+
+#include <test/xmldiff.hxx>
+
+#include <libxml/xpath.h>
+#include <libxml/parser.h>
+
+#include <set>
+#include <sstream>
+#include <cassert>
+#include <cmath>
+#include <vector>
+
+#if USE_CPPUNIT
+#include <cppunit/TestAssert.h>
+#endif
+
+namespace {
+
+struct tolerance
+{
+    ~tolerance()
+    {
+        xmlFree(elementName);
+        xmlFree(attribName);
+    }
+
+    tolerance()
+        : elementName(nullptr)
+        , attribName(nullptr)
+        , relative(false)
+        , value(0.0)
+    {
+    }
+
+    tolerance(const tolerance& tol)
+    {
+        elementName = xmlStrdup(tol.elementName);
+        attribName = xmlStrdup(tol.attribName);
+        relative = tol.relative;
+        value = tol.value;
+    }
+
+    xmlChar* elementName;
+    xmlChar* attribName;
+    bool relative;
+    double value;
+    bool operator<(const tolerance& rTol) const
+    {
+        int cmp = xmlStrcmp(elementName, rTol.elementName);
+        if(cmp == 0)
+        {
+            cmp = xmlStrcmp(attribName, rTol.attribName);
+        }
+
+        return cmp < 0;
+    }
+};
+
+class XMLDiff
+{
+public:
+    XMLDiff(const char* pFileName, const char* pContent, int size, const char* pToleranceFileName);
+    ~XMLDiff();
+
+    bool compare();
+private:
+    typedef std::set<tolerance> ToleranceContainer;
+
+    void loadToleranceFile(xmlDocPtr xmlTolerance);
+    bool compareAttributes(xmlNodePtr node1, xmlNodePtr node2);
+    bool compareElements(xmlNode* node1, xmlNode* node2);
+
+    /// Error message for cppunit that prints out when expected and found are not equal.
+    void cppunitAssertEqual(const xmlChar *expected, const xmlChar *found);
+
+    /// Error message for cppunit that prints out when expected and found are not equal - for doubles.
+    void cppunitAssertEqualDouble(const xmlNodePtr node, const xmlAttrPtr attr, double expected, double found, double delta);
+
+    ToleranceContainer toleranceContainer;
+    xmlDocPtr xmlFile1;
+    xmlDocPtr xmlFile2;
+    std::string fileName;
+};
+
+}
+
+XMLDiff::XMLDiff( const char* pFileName, const char* pContent, int size, const char* pToleranceFile)
+    : xmlFile1(xmlParseFile(pFileName))
+    , xmlFile2(xmlParseMemory(pContent, size))
+    , fileName(pFileName)
+{
+    if(pToleranceFile)
+    {
+        xmlDocPtr xmlToleranceFile = xmlParseFile(pToleranceFile);
+        loadToleranceFile(xmlToleranceFile);
+        xmlFreeDoc(xmlToleranceFile);
+    }
+}
+
+XMLDiff::~XMLDiff()
+{
+    xmlFreeDoc(xmlFile1);
+    xmlFreeDoc(xmlFile2);
+}
+
+namespace {
+
+void readAttributesForTolerance(xmlNodePtr node, tolerance& tol)
+{
+    xmlChar* elementName = xmlGetProp(node, BAD_CAST("elementName"));
+    tol.elementName = elementName;
+
+    xmlChar* attribName = xmlGetProp(node, BAD_CAST("attribName"));
+    tol.attribName = attribName;
+
+    xmlChar* value = xmlGetProp(node, BAD_CAST("value"));
+    double val = xmlXPathCastStringToNumber(value);
+    xmlFree(value);
+    tol.value = val;
+
+    xmlChar* relative = xmlGetProp(node, BAD_CAST("relative"));
+    bool rel = false;
+    if(xmlStrEqual(relative, BAD_CAST("true")))
+        rel = true;
+    xmlFree(relative);
+    tol.relative = rel;
+}
+
+}
+
+void XMLDiff::loadToleranceFile(xmlDocPtr xmlToleranceFile)
+{
+    xmlNodePtr root = xmlDocGetRootElement(xmlToleranceFile);
+#if USE_CPPUNIT
+    CPPUNIT_ASSERT_MESSAGE("did not find correct tolerance file", xmlStrEqual( root->name, BAD_CAST("tolerances") ));
+#else
+    if(!xmlStrEqual( root->name, BAD_CAST("tolerances") ))
+    {
+        assert(false);
+        return;
+    }
+#endif
+    xmlNodePtr child = nullptr;
+    for (child = root->children; child != nullptr; child = child->next)
+    {
+        // assume a valid xml file
+        if(child->type != XML_ELEMENT_NODE)
+            continue;
+
+        assert(xmlStrEqual(child->name, BAD_CAST("tolerance")));
+
+        tolerance tol;
+        readAttributesForTolerance(child, tol);
+        toleranceContainer.insert(tol);
+    }
+}
+
+bool XMLDiff::compare()
+{
+    xmlNode* root1 = xmlDocGetRootElement(xmlFile1);
+    xmlNode* root2 = xmlDocGetRootElement(xmlFile2);
+
+#if USE_CPPUNIT
+    CPPUNIT_ASSERT(root1);
+    CPPUNIT_ASSERT(root2);
+    cppunitAssertEqual(root1->name, root2->name);
+#else
+    if (!root1 || !root2)
+        return false;
+    if(!xmlStrEqual(root1->name, root2->name))
+        return false;
+#endif
+    return compareElements(root1, root2);
+}
+
+namespace {
+
+bool checkForEmptyChildren(xmlNodePtr node)
+{
+    if(!node)
+        return true;
+
+    for(; node != nullptr; node = node->next)
+    {
+        if (node->type == XML_ELEMENT_NODE)
+            return false;
+    }
+    return true;
+}
+
+}
+
+bool XMLDiff::compareElements(xmlNode* node1, xmlNode* node2)
+{
+#if USE_CPPUNIT
+    cppunitAssertEqual(node1->name, node2->name);
+#else
+    if (!xmlStrEqual( node1->name, node2->name ))
+        return false;
+#endif
+
+    //compare attributes
+    bool sameAttribs = compareAttributes(node1, node2);
+#if USE_CPPUNIT
+    CPPUNIT_ASSERT(sameAttribs);
+#else
+    if (!sameAttribs)
+        return false;
+#endif
+
+    // compare children
+    xmlNode* child2 = nullptr;
+    xmlNode* child1 = nullptr;
+    for(child1 = node1->children, child2 = node2->children; child1 != nullptr && child2 != nullptr; child1 = child1->next, child2 = child2->next)
+    {
+        if (child1->type == XML_ELEMENT_NODE)
+        {
+            bool bCompare = compareElements(child1, child2);
+            if(!bCompare)
+            {
+                return false;
+            }
+        }
+    }
+
+#if USE_CPPUNIT
+    CPPUNIT_ASSERT(checkForEmptyChildren(child1));
+    CPPUNIT_ASSERT(checkForEmptyChildren(child2));
+#else
+    if(!checkForEmptyChildren(child1) || !checkForEmptyChildren(child2))
+        return false;
+#endif
+
+    return true;
+}
+
+void XMLDiff::cppunitAssertEqual(const xmlChar *expected, const xmlChar *found)
+{
+#if USE_CPPUNIT
+    std::stringstream stringStream;
+    stringStream << "Reference: " << fileName << "\n- Expected: " << reinterpret_cast<const char*>(expected) << "\n- Found: " << reinterpret_cast<const char*>(found);
+
+    CPPUNIT_ASSERT_MESSAGE(stringStream.str(), xmlStrEqual(expected, found));
+#endif
+}
+
+void XMLDiff::cppunitAssertEqualDouble(const xmlNodePtr node, const xmlAttrPtr attr, double expected, double found, double delta)
+{
+#if USE_CPPUNIT
+    xmlChar * path = xmlGetNodePath(node);
+    std::stringstream stringStream;
+    stringStream << "Reference: " << fileName << "\n- Node: " << reinterpret_cast<const char*>(path) << "\n- Attr: " << reinterpret_cast<const char*>(attr->name);
+    xmlFree(path);
+
+    CPPUNIT_ASSERT_DOUBLES_EQUAL_MESSAGE(stringStream.str(), expected, found, delta);
+#endif
+}
+
+namespace {
+
+bool compareValuesWithTolerance(double val1, double val2, double tolerance, bool relative)
+{
+    if(relative)
+    {
+        return (val1/tolerance) <= val2 && val2 <= (val1*tolerance);
+    }
+    else
+    {
+        return (val1 - tolerance) <= val2 && val2 <= (val1 + tolerance);
+    }
+}
+
+}
+
+bool XMLDiff::compareAttributes(xmlNodePtr node1, xmlNodePtr node2)
+{
+    xmlAttrPtr attr1 = nullptr;
+    xmlAttrPtr attr2 = nullptr;
+    for(attr1 = node1->properties, attr2 = node2->properties; attr1 != nullptr && attr2 != nullptr; attr1 = attr1->next, attr2 = attr2->next)
+    {
+#if USE_CPPUNIT
+        cppunitAssertEqual(attr1->name, attr2->name);
+#else
+        if (!xmlStrEqual( attr1->name, attr2->name ))
+            return false;
+#endif
+
+        xmlChar* val1 = xmlGetProp(node1, attr1->name);
+        xmlChar* val2 = xmlGetProp(node2, attr2->name);
+
+        double dVal1 = xmlXPathCastStringToNumber(val1);
+        double dVal2 = xmlXPathCastStringToNumber(val2);
+
+        if(!std::isnan(dVal1) || !std::isnan(dVal2))
+        {
+            //compare by value and respect tolerance
+            tolerance tol;
+            tol.elementName = xmlStrdup(node1->name);
+            tol.attribName = xmlStrdup(attr1->name);
+            ToleranceContainer::iterator itr = toleranceContainer.find( tol );
+            bool useTolerance = false;
+            if (itr != toleranceContainer.end())
+            {
+                useTolerance = true;
+            }
+
+            if (useTolerance)
+            {
+                bool valInTolerance = compareValuesWithTolerance(dVal1, dVal2, itr->value, itr->relative);
+#if USE_CPPUNIT
+                std::stringstream stringStream("Expected Value: ");
+                stringStream << dVal1 << "; Found Value: " << dVal2 << "; Tolerance: " << itr->value;
+                stringStream << "; Relative: " << itr->relative;
+                CPPUNIT_ASSERT_MESSAGE(stringStream.str(), valInTolerance);
+#else
+                if (!valInTolerance)
+                    return false;
+#endif
+            }
+            else
+            {
+#if USE_CPPUNIT
+                cppunitAssertEqualDouble(node1, attr1, dVal1, dVal2, 1e-08);
+#else
+                if (dVal1 != dVal2)
+                    return false;
+#endif
+            }
+        }
+        else
+        {
+
+#if USE_CPPUNIT
+            cppunitAssertEqual(val1, val2);
+#else
+            if(!xmlStrEqual( val1, val2 ))
+                return false;
+#endif
+        }
+
+        xmlFree(val1);
+        xmlFree(val2);
+    }
+
+    // unequal number of attributes
+#ifdef CPPUNIT_ASSERT
+    if (attr1 || attr2)
+    {
+        std::stringstream failStream;
+        failStream << "Unequal number of attributes in ";
+        // print chain from document root
+        std::vector<std::string> parents;
+        auto n = node1;
+        while (n)
+        {
+            if (n->name)
+                parents.push_back(std::string(reinterpret_cast<const char *>(n->name)));
+            n = n->parent;
+        }
+        bool first = true;
+        for (auto it = parents.rbegin(); it != parents.rend(); ++it)
+        {
+            if (!first)
+                failStream << "->";
+            first = false;
+            failStream << *it;
+        }
+        failStream << " Attr1: ";
+        attr1 = node1->properties;
+        while (attr1 != nullptr)
+        {
+            xmlChar* val1 = xmlGetProp(node1, attr1->name);
+            failStream << BAD_CAST(attr1->name) << "=" << BAD_CAST(val1) << ", ";
+            xmlFree(val1);
+            attr1 = attr1->next;
+        }
+
+        failStream << " Attr2: ";
+        attr2 = node2->properties;
+        while (attr2 != nullptr)
+        {
+            xmlChar* val2 = xmlGetProp(node2, attr2->name);
+            failStream << BAD_CAST(attr2->name) << "=" << BAD_CAST(val2) << ", ";
+            xmlFree(val2);
+            attr2 = attr2->next;
+        }
+        CPPUNIT_ASSERT_MESSAGE(failStream.str(), false);
+    }
+#else
+    if (attr1 || attr2)
+        return false;
+#endif
+
+    return true;
+}
+
+
+bool
+doXMLDiff(char const*const pFileName, char const*const pContent, int const size,
+          char const*const pToleranceFileName)
+{
+    XMLDiff aDiff(pFileName, pContent, size, pToleranceFileName);
+    return aDiff.compare();
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */