tst_QSslError: improve the code coverage, as pointed at by LCOV

And also, reduce the utter sloppiness, weirdness of the test and
make it more a test and not a joke. Since the test itself depends
on !QT_NO_SSL, why bother building and running its main, to create
a useless tst_QSslError and do nothing then? Exclude test from
no-ssl build.

Change-Id: I67879b0de036cbc8c2f75a18f4cf94e6c43c5af0
Reviewed-by: Mårten Nordheim <marten.nordheim@qt.io>
(cherry picked from commit fe009bd51438877d864d2444f40582508c43c1f3)

2 files changed, 98 insertions, 37 deletions

diff --git a/tests/auto/network/ssl/qsslerror/tst_qsslerror.cpp b/tests/auto/network/ssl/qsslerror/tst_qsslerror.cpp
index 438234b6dd..06f0325248 100644
--- a/tests/auto/network/ssl/qsslerror/tst_qsslerror.cpp
+++ b/tests/auto/network/ssl/qsslerror/tst_qsslerror.cpp
@@ -28,51 +28,113 @@
 
 
 #include <QtTest/QtTest>
+
+#include <QtNetwork/qtnetworkglobal.h>
+
+#include <qsslcertificate.h>
 #include <qsslerror.h>
 
-#include <QtNetwork/qhostaddress.h>
-#include <QtNetwork/qnetworkproxy.h>
+#include <QtCore/qmetaobject.h>
+#include <QtCore/qbytearray.h>
+#include <QtCore/qstring.h>
+#include <QtCore/qset.h>
+
+QT_USE_NAMESPACE
+
+const QByteArray certificateBytes =
+    "-----BEGIN CERTIFICATE-----\n"
+    "MIIEjjCCBDOgAwIBAgIQCQsKtxCf9ik3vIVQ+PMa5TAKBggqhkjOPQQDAjBKMQsw\n"
+    "CQYDVQQGEwJVUzEZMBcGA1UEChMQQ2xvdWRmbGFyZSwgSW5jLjEgMB4GA1UEAxMX\n"
+    "Q2xvdWRmbGFyZSBJbmMgRUNDIENBLTMwHhcNMjAwODE2MDAwMDAwWhcNMjEwODE2\n"
+    "MTIwMDAwWjBhMQswCQYDVQQGEwJVUzELMAkGA1UECBMCQ0ExFjAUBgNVBAcTDVNh\n"
+    "biBGcmFuY2lzY28xGTAXBgNVBAoTEENsb3VkZmxhcmUsIEluYy4xEjAQBgNVBAMT\n"
+    "CXd3dy5xdC5pbzBZMBMGByqGSM49AgEGCCqGSM49AwEHA0IABP/r0xH22wdU8fLk\n"
+    "RsXhxRj5fmUNUo7rxnUl3lyqYYp53cLvn3agQifXkegpE8Xv4pGmuyWZj85FtoeZ\n"
+    "UZh8iyCjggLiMIIC3jAfBgNVHSMEGDAWgBSlzjfq67B1DpRniLRF+tkkEIeWHzAd\n"
+    "BgNVHQ4EFgQU7qPYGi9VtC4/6MS+54LNEAXApBgwFAYDVR0RBA0wC4IJd3d3LnF0\n"
+    "LmlvMA4GA1UdDwEB/wQEAwIHgDAdBgNVHSUEFjAUBggrBgEFBQcDAQYIKwYBBQUH\n"
+    "AwIwewYDVR0fBHQwcjA3oDWgM4YxaHR0cDovL2NybDMuZGlnaWNlcnQuY29tL0Ns\n"
+    "b3VkZmxhcmVJbmNFQ0NDQS0zLmNybDA3oDWgM4YxaHR0cDovL2NybDQuZGlnaWNl\n"
+    "cnQuY29tL0Nsb3VkZmxhcmVJbmNFQ0NDQS0zLmNybDBMBgNVHSAERTBDMDcGCWCG\n"
+    "SAGG/WwBATAqMCgGCCsGAQUFBwIBFhxodHRwczovL3d3dy5kaWdpY2VydC5jb20v\n"
+    "Q1BTMAgGBmeBDAECAjB2BggrBgEFBQcBAQRqMGgwJAYIKwYBBQUHMAGGGGh0dHA6\n"
+    "Ly9vY3NwLmRpZ2ljZXJ0LmNvbTBABggrBgEFBQcwAoY0aHR0cDovL2NhY2VydHMu\n"
+    "ZGlnaWNlcnQuY29tL0Nsb3VkZmxhcmVJbmNFQ0NDQS0zLmNydDAMBgNVHRMBAf8E\n"
+    "AjAAMIIBBAYKKwYBBAHWeQIEAgSB9QSB8gDwAHYA9lyUL9F3MCIUVBgIMJRWjuNN\n"
+    "Exkzv98MLyALzE7xZOMAAAFz90PlSQAABAMARzBFAiAhrrtxdmuxpCy8HAJJ5Qkg\n"
+    "WNvlo8nZqfe6pqGUcz0dmwIhAOMqDtd5ZhcfRk96GAJxPm8bH4hDnmqDP/zJG2Mq\n"
+    "nFpMAHYAXNxDkv7mq0VEsV6a1FbmEDf71fpH3KFzlLJe5vbHDsoAAAFz90PlewAA\n"
+    "BAMARzBFAiB/EkdY10LDdaRcf6eSc/QxucxU+2PI+3pWjh/21A8ZUAIhAK2Qz9Kw\n"
+    "onlRNyHpV3E6qyVydkXihj3c3q5UclpURYcmMAoGCCqGSM49BAMCA0kAMEYCIQDz\n"
+    "K/lzLb2Rbeg1HErRLLm2HkJUmfOGU2+tbROSTGK8ugIhAKA+MKqaZ8VjPxQ+Ho4v\n"
+    "fuwccvZfkU/fg8tAHTOzX23v\n"
+    "-----END CERTIFICATE-----";
 
 class tst_QSslError : public QObject
 {
     Q_OBJECT
-
-public:
-    static void enterLoop(int secs)
-    {
-        ++loopLevel;
-        QTestEventLoop::instance().enterLoop(secs);
-        --loopLevel;
-    }
-    static void exitLoop()
-    {
-        // Safe exit - if we aren't in an event loop, don't
-        // exit one.
-        if (loopLevel > 0)
-            QTestEventLoop::instance().exitLoop();
-    }
-    static bool timeout()
-    {
-        return QTestEventLoop::instance().timeout();
-    }
-
-#ifndef QT_NO_SSL
 private slots:
     void constructing();
+    void nonDefaultConstructors();
     void hash();
-#endif
-
-private:
-    static int loopLevel;
 };
 
-int tst_QSslError::loopLevel = 0;
-
-#ifndef QT_NO_SSL
-
 void tst_QSslError::constructing()
 {
-    QSslError error;
+    const QSslError error;
+    QCOMPARE(error.error(), QSslError::NoError);
+    QCOMPARE(error.errorString(), QStringLiteral("No error"));
+    QVERIFY(error.certificate().isNull());
+}
+
+void tst_QSslError::nonDefaultConstructors()
+{
+    if (!QSslSocket::supportsSsl())
+        QSKIP("This test requires a working TLS library");
+
+    const auto chain = QSslCertificate::fromData(certificateBytes);
+    QCOMPARE(chain.size(), 1);
+    const auto certificate = chain.at(0);
+    QVERIFY(!certificate.isNull());
+
+    const auto visitor = QSslError::staticMetaObject;
+    const int nEnums = visitor.enumeratorCount();
+    QMetaEnum errorCodesEnum;
+    for (int i = 0; i < nEnums; ++i) {
+        const auto metaEnum = visitor.enumerator(i);
+        if (metaEnum.enumName() == QStringLiteral("SslError")) {
+            errorCodesEnum = metaEnum;
+            break;
+        }
+    }
+
+    QCOMPARE(errorCodesEnum.enumName(), QStringLiteral("SslError"));
+    for (int i = 0, e = errorCodesEnum.keyCount(); i < e; ++i) {
+        const int value = errorCodesEnum.value(i);
+        if (value == -1) {
+            QVERIFY(i);
+            break;
+        }
+        const auto errorCode = QSslError::SslError(value);
+        QSslError error(errorCode);
+
+        const auto basicChecks = [](const QSslError &err, QSslError::SslError code) {
+            QCOMPARE(err.error(), code);
+            const auto errorString = err.errorString();
+            if (code == QSslError::NoError)
+                QCOMPARE(errorString, QStringLiteral("No error"));
+            else
+                QVERIFY(errorString != QStringLiteral("No error"));
+        };
+
+        basicChecks(error, errorCode);
+
+        // ;)
+        error = QSslError(errorCode, certificate);
+
+        basicChecks(error, errorCode);
+        QVERIFY(!error.certificate().isNull());
+    }
 }
 
 void tst_QSslError::hash()
@@ -83,7 +145,5 @@ void tst_QSslError::hash()
     QCOMPARE(errors.size(), 1);
 }
 
-#endif // QT_NO_SSL
-
 QTEST_MAIN(tst_QSslError)
 #include "tst_qsslerror.moc"
diff --git a/tests/auto/network/ssl/ssl.pro b/tests/auto/network/ssl/ssl.pro
index 169e9bce83..c9a4474c4c 100644
--- a/tests/auto/network/ssl/ssl.pro
+++ b/tests/auto/network/ssl/ssl.pro
@@ -5,11 +5,12 @@ SUBDIRS=\
    qpassworddigestor \
    qsslcertificate \
    qsslcipher \
-   qsslellipticcurve \
-   qsslerror \
-   qsslkey \
+   qsslellipticcurve
 
 qtConfig(ssl) {
+    SUBDIRS += qsslkey \
+               qsslerror
+
     qtConfig(private_tests) {
         SUBDIRS += \
             qsslsocket \