Provide NLS support in JGit.

The support for NLS relies on java.util API to load a standard
ResourceBundle and then uses java reflection API to inject localized
strings into public String fields of the corresponding instance
of TranslationBundle.

Locale setting is supported per thread to enable concurrent threads
to use different locales. This is useful when JGit runs in a server
context where (error) messages might need to differ per-request to
suit the user's preference.

Change-Id: Ie0e63a0d7bb74eaad495dbe8248595d8a3a76883
Signed-off-by: Sasa Zivkov <sasa.zivkov@sap.com>

10 files changed, 462 insertions, 0 deletions

diff --git a/org.eclipse.jgit.test/tst/org/eclipse/jgit/nls/GermanTranslatedBundle.java b/org.eclipse.jgit.test/tst/org/eclipse/jgit/nls/GermanTranslatedBundle.java
new file mode 100644
index 0000000000..579b57acd3
--- /dev/null
+++ b/org.eclipse.jgit.test/tst/org/eclipse/jgit/nls/GermanTranslatedBundle.java
@@ -0,0 +1,52 @@
+/*
+ * Copyright (C) 2010, Sasa Zivkov <sasa.zivkov@sap.com>
+ * and other copyright owners as documented in the project's IP log.
+ *
+ * This program and the accompanying materials are made available
+ * under the terms of the Eclipse Distribution License v1.0 which
+ * accompanies this distribution, is reproduced below, and is
+ * available at http://www.eclipse.org/org/documents/edl-v10.php
+ *
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above
+ *   copyright notice, this list of conditions and the following
+ *   disclaimer in the documentation and/or other materials provided
+ *   with the distribution.
+ *
+ * - Neither the name of the Eclipse Foundation, Inc. nor the
+ *   names of its contributors may be used to endorse or promote
+ *   products derived from this software without specific prior
+ *   written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+ * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
+ * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+package org.eclipse.jgit.nls;
+
+public class GermanTranslatedBundle extends TranslationBundle {
+	public static GermanTranslatedBundle get() {
+		return NLS.getBundleFor(GermanTranslatedBundle.class);
+	}
+
+	public String goodMorning;
+}
diff --git a/org.eclipse.jgit.test/tst/org/eclipse/jgit/nls/GermanTranslatedBundle.properties b/org.eclipse.jgit.test/tst/org/eclipse/jgit/nls/GermanTranslatedBundle.properties
new file mode 100644
index 0000000000..0e8cfc124a
--- /dev/null
+++ b/org.eclipse.jgit.test/tst/org/eclipse/jgit/nls/GermanTranslatedBundle.properties
@@ -0,0 +1 @@
+goodMorning=Good morning {0}
\ No newline at end of file
diff --git a/org.eclipse.jgit.test/tst/org/eclipse/jgit/nls/GermanTranslatedBundle_de.properties b/org.eclipse.jgit.test/tst/org/eclipse/jgit/nls/GermanTranslatedBundle_de.properties
new file mode 100644
index 0000000000..6b22bf66bc
--- /dev/null
+++ b/org.eclipse.jgit.test/tst/org/eclipse/jgit/nls/GermanTranslatedBundle_de.properties
@@ -0,0 +1 @@
+goodMorning=Guten Morgen {0}
\ No newline at end of file
diff --git a/org.eclipse.jgit.test/tst/org/eclipse/jgit/nls/MissingPropertyBundle.java b/org.eclipse.jgit.test/tst/org/eclipse/jgit/nls/MissingPropertyBundle.java
new file mode 100644
index 0000000000..0459b80d27
--- /dev/null
+++ b/org.eclipse.jgit.test/tst/org/eclipse/jgit/nls/MissingPropertyBundle.java
@@ -0,0 +1,53 @@
+/*
+ * Copyright (C) 2010, Sasa Zivkov <sasa.zivkov@sap.com>
+ * and other copyright owners as documented in the project's IP log.
+ *
+ * This program and the accompanying materials are made available
+ * under the terms of the Eclipse Distribution License v1.0 which
+ * accompanies this distribution, is reproduced below, and is
+ * available at http://www.eclipse.org/org/documents/edl-v10.php
+ *
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above
+ *   copyright notice, this list of conditions and the following
+ *   disclaimer in the documentation and/or other materials provided
+ *   with the distribution.
+ *
+ * - Neither the name of the Eclipse Foundation, Inc. nor the
+ *   names of its contributors may be used to endorse or promote
+ *   products derived from this software without specific prior
+ *   written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+ * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
+ * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+package org.eclipse.jgit.nls;
+
+public class MissingPropertyBundle extends TranslationBundle {
+	public static MissingPropertyBundle get() {
+		return NLS.getBundleFor(MissingPropertyBundle.class);
+	}
+
+	public String goodMorning;
+	public String nonTranslatedKey;
+}
diff --git a/org.eclipse.jgit.test/tst/org/eclipse/jgit/nls/MissingPropertyBundle.properties b/org.eclipse.jgit.test/tst/org/eclipse/jgit/nls/MissingPropertyBundle.properties
new file mode 100644
index 0000000000..0e8cfc124a
--- /dev/null
+++ b/org.eclipse.jgit.test/tst/org/eclipse/jgit/nls/MissingPropertyBundle.properties
@@ -0,0 +1 @@
+goodMorning=Good morning {0}
\ No newline at end of file
diff --git a/org.eclipse.jgit.test/tst/org/eclipse/jgit/nls/NoPropertiesBundle.java b/org.eclipse.jgit.test/tst/org/eclipse/jgit/nls/NoPropertiesBundle.java
new file mode 100644
index 0000000000..f0232cad46
--- /dev/null
+++ b/org.eclipse.jgit.test/tst/org/eclipse/jgit/nls/NoPropertiesBundle.java
@@ -0,0 +1,50 @@
+/*
+ * Copyright (C) 2010, Sasa Zivkov <sasa.zivkov@sap.com>
+ * and other copyright owners as documented in the project's IP log.
+ *
+ * This program and the accompanying materials are made available
+ * under the terms of the Eclipse Distribution License v1.0 which
+ * accompanies this distribution, is reproduced below, and is
+ * available at http://www.eclipse.org/org/documents/edl-v10.php
+ *
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above
+ *   copyright notice, this list of conditions and the following
+ *   disclaimer in the documentation and/or other materials provided
+ *   with the distribution.
+ *
+ * - Neither the name of the Eclipse Foundation, Inc. nor the
+ *   names of its contributors may be used to endorse or promote
+ *   products derived from this software without specific prior
+ *   written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+ * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
+ * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+package org.eclipse.jgit.nls;
+
+public class NoPropertiesBundle extends TranslationBundle {
+	public static NoPropertiesBundle get() {
+		return NLS.getBundleFor(NoPropertiesBundle.class);
+	}
+}
diff --git a/org.eclipse.jgit.test/tst/org/eclipse/jgit/nls/NonTranslatedBundle.java b/org.eclipse.jgit.test/tst/org/eclipse/jgit/nls/NonTranslatedBundle.java
new file mode 100644
index 0000000000..9251af2803
--- /dev/null
+++ b/org.eclipse.jgit.test/tst/org/eclipse/jgit/nls/NonTranslatedBundle.java
@@ -0,0 +1,56 @@
+/*
+ * Copyright (C) 2010, Sasa Zivkov <sasa.zivkov@sap.com>
+ * and other copyright owners as documented in the project's IP log.
+ *
+ * This program and the accompanying materials are made available
+ * under the terms of the Eclipse Distribution License v1.0 which
+ * accompanies this distribution, is reproduced below, and is
+ * available at http://www.eclipse.org/org/documents/edl-v10.php
+ *
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above
+ *   copyright notice, this list of conditions and the following
+ *   disclaimer in the documentation and/or other materials provided
+ *   with the distribution.
+ *
+ * - Neither the name of the Eclipse Foundation, Inc. nor the
+ *   names of its contributors may be used to endorse or promote
+ *   products derived from this software without specific prior
+ *   written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+ * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
+ * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+package org.eclipse.jgit.nls;
+
+import org.eclipse.jgit.nls.NLS;
+import org.eclipse.jgit.nls.TranslationBundle;
+
+
+public class NonTranslatedBundle extends TranslationBundle {
+	public static NonTranslatedBundle get() {
+		return NLS.getBundleFor(NonTranslatedBundle.class);
+	}
+
+	public String goodMorning;
+}
diff --git a/org.eclipse.jgit.test/tst/org/eclipse/jgit/nls/NonTranslatedBundle.properties b/org.eclipse.jgit.test/tst/org/eclipse/jgit/nls/NonTranslatedBundle.properties
new file mode 100644
index 0000000000..0e8cfc124a
--- /dev/null
+++ b/org.eclipse.jgit.test/tst/org/eclipse/jgit/nls/NonTranslatedBundle.properties
@@ -0,0 +1 @@
+goodMorning=Good morning {0}
\ No newline at end of file
diff --git a/org.eclipse.jgit.test/tst/org/eclipse/jgit/nls/TestNLS.java b/org.eclipse.jgit.test/tst/org/eclipse/jgit/nls/TestNLS.java
new file mode 100644
index 0000000000..b6377c9203
--- /dev/null
+++ b/org.eclipse.jgit.test/tst/org/eclipse/jgit/nls/TestNLS.java
@@ -0,0 +1,141 @@
+/*
+ * Copyright (C) 2010, Sasa Zivkov <sasa.zivkov@sap.com>
+ * and other copyright owners as documented in the project's IP log.
+ *
+ * This program and the accompanying materials are made available
+ * under the terms of the Eclipse Distribution License v1.0 which
+ * accompanies this distribution, is reproduced below, and is
+ * available at http://www.eclipse.org/org/documents/edl-v10.php
+ *
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above
+ *   copyright notice, this list of conditions and the following
+ *   disclaimer in the documentation and/or other materials provided
+ *   with the distribution.
+ *
+ * - Neither the name of the Eclipse Foundation, Inc. nor the
+ *   names of its contributors may be used to endorse or promote
+ *   products derived from this software without specific prior
+ *   written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+ * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
+ * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+package org.eclipse.jgit.nls;
+
+import java.util.Locale;
+import java.util.concurrent.BrokenBarrierException;
+import java.util.concurrent.CyclicBarrier;
+
+import junit.framework.TestCase;
+
+
+public class TestNLS extends TestCase {
+
+	public void testNLSLocale() {
+		NLS.setLocale(Locale.ROOT);
+		GermanTranslatedBundle bundle = GermanTranslatedBundle.get();
+		assertEquals(Locale.ROOT, bundle.getEffectiveLocale());
+
+		NLS.setLocale(Locale.GERMAN);
+		bundle = GermanTranslatedBundle.get();
+		assertEquals(Locale.GERMAN, bundle.getEffectiveLocale());
+	}
+
+	public void testJVMDefaultLocale() {
+		Locale.setDefault(Locale.ROOT);
+		NLS.useJVMDefaultLocale();
+		GermanTranslatedBundle bundle = GermanTranslatedBundle.get();
+		assertEquals(Locale.ROOT, bundle.getEffectiveLocale());
+
+		Locale.setDefault(Locale.GERMAN);
+		NLS.useJVMDefaultLocale();
+		bundle = GermanTranslatedBundle.get();
+		assertEquals(Locale.GERMAN, bundle.getEffectiveLocale());
+	}
+
+	public void testThreadTranslationBundleInheritance() throws InterruptedException {
+
+		class T extends Thread {
+			GermanTranslatedBundle bundle;
+			@Override
+			public void run() {
+				bundle = GermanTranslatedBundle.get();
+			}
+		}
+
+		NLS.setLocale(Locale.ROOT);
+		GermanTranslatedBundle mainThreadsBundle = GermanTranslatedBundle.get();
+		T t = new T();
+		t.start();
+		t.join();
+		assertSame(mainThreadsBundle, t.bundle);
+
+		NLS.setLocale(Locale.GERMAN);
+		mainThreadsBundle = GermanTranslatedBundle.get();
+		t = new T();
+		t.start();
+		t.join();
+		assertSame(mainThreadsBundle, t.bundle);
+	}
+
+	public void testParallelThreadsWithDifferentLocales() throws InterruptedException {
+
+		final CyclicBarrier barrier = new CyclicBarrier(2);
+
+		class T extends Thread {
+			Locale locale;
+			GermanTranslatedBundle bundle;
+			Exception e;
+
+			T(Locale locale) {
+				this.locale = locale;
+			}
+
+			@Override
+			public void run() {
+				try {
+					NLS.setLocale(locale);
+					barrier.await(); // wait for the other thread to set its locale
+					bundle = GermanTranslatedBundle.get();
+				} catch (InterruptedException e) {
+					this.e = e;
+				} catch (BrokenBarrierException e) {
+					this.e = e;
+				}
+			}
+		}
+
+		T t1 = new T(Locale.ROOT);
+		T t2 = new T(Locale.GERMAN);
+		t1.start();
+		t2.start();
+		t1.join();
+		t2.join();
+
+		assertNull("t1 was interrupted or barrier was broken", t1.e);
+		assertNull("t2 was interrupted or barrier was broken", t2.e);
+		assertEquals(Locale.ROOT, t1.bundle.getEffectiveLocale());
+		assertEquals(Locale.GERMAN, t2.bundle.getEffectiveLocale());
+	}
+}
diff --git a/org.eclipse.jgit.test/tst/org/eclipse/jgit/nls/TestTranslationBundle.java b/org.eclipse.jgit.test/tst/org/eclipse/jgit/nls/TestTranslationBundle.java
new file mode 100644
index 0000000000..58b42c9d4a
--- /dev/null
+++ b/org.eclipse.jgit.test/tst/org/eclipse/jgit/nls/TestTranslationBundle.java
@@ -0,0 +1,106 @@
+/*
+ * Copyright (C) 2010, Sasa Zivkov <sasa.zivkov@sap.com>
+ * and other copyright owners as documented in the project's IP log.
+ *
+ * This program and the accompanying materials are made available
+ * under the terms of the Eclipse Distribution License v1.0 which
+ * accompanies this distribution, is reproduced below, and is
+ * available at http://www.eclipse.org/org/documents/edl-v10.php
+ *
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above
+ *   copyright notice, this list of conditions and the following
+ *   disclaimer in the documentation and/or other materials provided
+ *   with the distribution.
+ *
+ * - Neither the name of the Eclipse Foundation, Inc. nor the
+ *   names of its contributors may be used to endorse or promote
+ *   products derived from this software without specific prior
+ *   written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+ * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
+ * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+package org.eclipse.jgit.nls;
+
+import java.util.Locale;
+
+import org.eclipse.jgit.errors.TranslationBundleLoadingException;
+import org.eclipse.jgit.errors.TranslationStringMissingException;
+
+import junit.framework.TestCase;
+
+public class TestTranslationBundle extends TestCase {
+
+	public void testMissingPropertiesFile() {
+		try {
+			new NoPropertiesBundle().load(Locale.ROOT);
+			fail("Expected TranslationBundleLoadingException");
+		} catch (TranslationBundleLoadingException e) {
+			assertEquals(NoPropertiesBundle.class, e.getBundleClass());
+			assertEquals(Locale.ROOT, e.getLocale());
+			// pass
+		}
+	}
+
+	public void testMissingString() {
+		try {
+			new MissingPropertyBundle().load(Locale.ROOT);
+			fail("Expected TranslationStringMissingException");
+		} catch (TranslationStringMissingException e) {
+			assertEquals("nonTranslatedKey", e.getKey());
+			assertEquals(MissingPropertyBundle.class, e.getBundleClass());
+			assertEquals(Locale.ROOT, e.getLocale());
+			// pass
+		}
+	}
+
+	public void testNonTranslatedBundle() {
+		NonTranslatedBundle bundle = new NonTranslatedBundle();
+
+		bundle.load(Locale.ROOT);
+		assertEquals(Locale.ROOT, bundle.getEffectiveLocale());
+		assertEquals("Good morning {0}", bundle.goodMorning);
+
+		bundle.load(Locale.ENGLISH);
+		assertEquals(Locale.ROOT, bundle.getEffectiveLocale());
+		assertEquals("Good morning {0}", bundle.goodMorning);
+
+		bundle.load(Locale.GERMAN);
+		assertEquals(Locale.ROOT, bundle.getEffectiveLocale());
+		assertEquals("Good morning {0}", bundle.goodMorning);
+	}
+
+	public void testGermanTranslation() {
+		GermanTranslatedBundle bundle = new GermanTranslatedBundle();
+
+		bundle.load(Locale.ROOT);
+		assertEquals(Locale.ROOT, bundle.getEffectiveLocale());
+		assertEquals("Good morning {0}", bundle.goodMorning);
+
+		bundle.load(Locale.GERMAN);
+		assertEquals(Locale.GERMAN, bundle.getEffectiveLocale());
+		assertEquals("Guten Morgen {0}", bundle.goodMorning);
+	}
+
+}