[libcalamares] Add TimeZone support to build

- Add to CMakeLists.txt
 - Test basic scenarios

src/libcalamares/CMakeLists.txt

@@ -34,6 +34,7 @@ set( libSources
     locale/Label.cpp
     locale/LabelModel.cpp
     locale/Lookup.cpp
+    locale/TimeZone.cpp
     locale/TranslatableConfiguration.cpp
 
     # Network service

src/libcalamares/locale/Tests.cpp

@@ -19,6 +19,7 @@
 #include "Tests.h"
 
 #include "locale/LabelModel.h"
+#include "locale/TimeZone.h"
 #include "locale/TranslatableConfiguration.h"
 
 #include "CalamaresVersion.h"
@@ -199,3 +200,34 @@ LocaleTests::testTranslatableConfig2()
     QVERIFY( ts3.isEmpty() );
     QCOMPARE( ts3.count(), 1 );  // The empty string
 }
+
+void
+LocaleTests::testSimpleZones()
+{
+    using namespace CalamaresUtils::Locale;
+
+    {
+        TZRegion r;
+        QVERIFY( r.tr().isEmpty() );
+    }
+    {
+        TZZone n;
+        QVERIFY( n.tr().isEmpty() );
+    }
+    {
+        TZRegion r0( "xAmsterdam" );
+        QCOMPARE( r0.tr(), QStringLiteral( "xAmsterdam" ) );
+        TZRegion r1( r0 );
+        QCOMPARE( r0.tr(), QStringLiteral( "xAmsterdam" ) );
+        QCOMPARE( r1.tr(), QStringLiteral( "xAmsterdam" ) );
+        TZRegion r2( std::move( r0 ) );
+        QCOMPARE( r2.tr(), QStringLiteral( "xAmsterdam" ) );
+        QCOMPARE( r0.tr(), QString() );
+    }
+}
+
+void
+LocaleTests::testComplexZones()
+{
+    // Stub for now
+}

src/libcalamares/locale/Tests.h

@@ -36,6 +36,10 @@ private Q_SLOTS:
     void testTranslatableLanguages();
     void testTranslatableConfig1();
     void testTranslatableConfig2();
+
+    // TimeZone testing
+    void testSimpleZones();
+    void testComplexZones();
 };
 
 #endif