Add read xml function for Relationships

tests/auto/auto.pro

@@ -2,4 +2,5 @@ TEMPLATE=subdirs
 SUBDIRS=\
     utility \
     mergecell \
-    zipreader
+    zipreader \
+    relationships

tests/auto/relationships/relationships.pro

@@ -0,0 +1,19 @@
+#-------------------------------------------------
+#
+# Project created by QtCreator 2013-09-10T13:27:11
+#
+#-------------------------------------------------
+
+QT       += testlib xlsx xlsx-private
+CONFIG += testcase
+DEFINES += XLSX_TEST
+
+TARGET = tst_relationshipstest
+CONFIG   += console
+CONFIG   -= app_bundle
+
+TEMPLATE = app
+
+
+SOURCES += tst_relationshipstest.cpp
+DEFINES += SRCDIR=\\\"$$PWD/\\\"

tests/auto/relationships/tst_relationshipstest.cpp

@@ -0,0 +1,52 @@
+#include "private/xlsxrelationships_p.h"
+#include <QString>
+#include <QtTest>
+
+class RelationshipsTest : public QObject
+{
+    Q_OBJECT
+
+public:
+    RelationshipsTest();
+
+private Q_SLOTS:
+    void testSaveXml();
+    void testLoadXml();
+};
+
+RelationshipsTest::RelationshipsTest()
+{
+
+}
+
+void RelationshipsTest::testSaveXml()
+{
+    QXlsx::Relationships rels;
+    rels.addDocumentRelationship("/officeDocument", "xl/workbook.xml");
+
+    QByteArray xmldata;
+    QBuffer buffer(&xmldata);
+    buffer.open(QIODevice::WriteOnly);
+    rels.saveToXmlFile(&buffer);
+
+    QVERIFY2(xmldata.contains("<Relationship Id=\"rId1\" Type=\"http://schemas.openxmlformats.org/officeDocument/2006/relationships/officeDocument\" Target=\"xl/workbook.xml\"/>"), "");
+}
+
+void RelationshipsTest::testLoadXml()
+{
+    QByteArray xmldata("<\?xml version=\"1.0\" encoding=\"UTF-8\" standalone=\"yes\"\?>"
+                       "<Relationships xmlns=\"http://schemas.openxmlformats.org/package/2006/relationships\">"
+                       "<Relationship Id=\"rId1\" Type=\"http://schemas.openxmlformats.org/officeDocument/2006/relationships/officeDocument\" Target=\"xl/workbook.xml\"/>"
+                       "</Relationships>");
+    QBuffer buffer(&xmldata);
+    buffer.open(QIODevice::ReadOnly);
+
+    QXlsx::Relationships rels;
+    rels.loadFromXmlFile(&buffer);
+
+    QCOMPARE(rels.documentRelationships("/officeDocument").size(), 1);
+}
+
+QTEST_APPLESS_MAIN(RelationshipsTest)
+
+#include "tst_relationshipstest.moc"