Add PackageEntry unit tests.

src/test/java/de/dentrassi/rpm/builder/PackageEntryTest.java

@@ -0,0 +1,81 @@
+package de.dentrassi.rpm.builder;
+
+import static org.junit.Assert.*;
+
+import java.io.File;
+
+import org.junit.Test;
+
+public class PackageEntryTest
+{
+    public PackageEntryTest ()
+    {
+        super();
+    }
+
+    @Test
+    public void testValidateNameNull ()
+    {
+        final PackageEntry entry = new PackageEntry ();
+        entry.setLinkTo ( "something-to-link-to" );
+
+        assertThrows ( IllegalStateException.class, () -> entry.validate () );
+    }
+
+    @Test
+    public void testValidateNameEmpty ()
+    {
+        final PackageEntry entry = new PackageEntry ();
+        entry.setName ("");
+        entry.setLinkTo ( "something-to-link-to" );
+
+        assertThrows ( IllegalStateException.class, () -> entry.validate () );
+    }
+
+    @Test
+    public void testValidateNoSource ()
+    {
+        final PackageEntry entry = new PackageEntry ();
+        entry.setName ("some-entry");
+
+        assertThrows ( IllegalStateException.class, () -> entry.validate () );
+    }
+
+    @Test
+    public void testValidateGhostNull ()
+    {
+        final PackageEntry entry = new PackageEntry ();
+        entry.setName ("some-entry");
+        entry.setGhost ( null );
+
+        // no NullPointerException must be thrown
+        assertThrows ( IllegalStateException.class, () -> entry.validate () );
+    }
+
+    @Test
+    public void testValidateGhostSource()
+    {
+        final PackageEntry entry = new PackageEntry ();
+        entry.setName ("some-entry");
+        entry.setGhost ( Boolean.TRUE );
+
+        try {
+            entry.validate ();
+        }
+        catch ( final RuntimeException e)
+        {
+            fail ( "Ghost entries do not require other sources, got error: " + e.getMessage () );
+        }
+    }
+
+    @Test
+    public void testValidateMultipleSourcesGhost()
+    {
+        final PackageEntry entry = new PackageEntry ();
+        entry.setName ("some-entry");
+        entry.setFile ( new File ( "some-file-entry" ) );
+        entry.setGhost ( Boolean.TRUE );
+
+        assertThrows ( IllegalStateException.class, () -> entry.validate () );
+    }
+}