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diff --git a/test/junit/net/sf/antcontrib/cpptasks/TestLinkerDef.java b/test/junit/net/sf/antcontrib/cpptasks/TestLinkerDef.java
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+++ b/test/junit/net/sf/antcontrib/cpptasks/TestLinkerDef.java
@@ -0,0 +1,343 @@
+/*
+ *
+ * Copyright 2002-2004 The Ant-Contrib project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License"); you may not
+ * use this file except in compliance with the License. You may obtain a copy of
+ * the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ * License for the specific language governing permissions and limitations under
+ * the License.
+ */
+package net.sf.antcontrib.cpptasks;
+
+import java.io.File;
+import java.io.IOException;
+import net.sf.antcontrib.cpptasks.compiler.CommandLineLinkerConfiguration;
+import net.sf.antcontrib.cpptasks.compiler.Linker;
+import net.sf.antcontrib.cpptasks.devstudio.DevStudioLinker;
+import net.sf.antcontrib.cpptasks.gcc.GccLinker;
+import net.sf.antcontrib.cpptasks.types.FlexLong;
+import net.sf.antcontrib.cpptasks.types.LibrarySet;
+import net.sf.antcontrib.cpptasks.types.LinkerArgument;
+import net.sf.antcontrib.cpptasks.types.SystemLibrarySet;
+import org.apache.tools.ant.BuildException;
+import org.apache.tools.ant.types.FlexInteger;
+
+/**
+ * Tests for LinkerDef class.
+ */
+public final class TestLinkerDef
+    extends TestProcessorDef {
+  /**
+   * Constructor.
+   *
+   * @param name
+   *            test name
+   */
+  public TestLinkerDef(final String name) {
+    super(name);
+  }
+
+  /**
+   * Creates a processor.
+   *
+   * @return new linker
+   */
+  protected ProcessorDef create() {
+    return new LinkerDef();
+  }
+
+  /**
+   * Test if setting the classname attribute to the name of the GCC linker
+   * results in the singleton GCC linker.
+   */
+  public void testGetGcc() {
+    LinkerDef linkerDef = (LinkerDef) create();
+    linkerDef.setClassname("net.sf.antcontrib.cpptasks.gcc.GccLinker");
+    Linker comp = (Linker) linkerDef.getProcessor();
+    assertNotNull(comp);
+    assertSame(GccLinker.getInstance(), comp);
+  }
+
+  /**
+   * Test if setting the classname attribute to the name of the MSVC linker
+   * results in the singleton MSVC linker.
+   */
+  public void testGetMSVC() {
+    LinkerDef linkerDef = (LinkerDef) create();
+    linkerDef
+        .setClassname("net.sf.antcontrib.cpptasks.devstudio.DevStudioLinker");
+    Linker comp = (Linker) linkerDef.getProcessor();
+    assertNotNull(comp);
+    assertSame(DevStudioLinker.getInstance(), comp);
+  }
+
+  /**
+   * Tests if setting the classname attribute to an bogus classname results in
+   * a BuildException.
+   *
+   */
+  public void testUnknownClass() {
+    LinkerDef linkerDef = (LinkerDef) create();
+    try {
+      linkerDef
+          .setClassname("net.sf.antcontrib.cpptasks.bogus.BogusLinker");
+    } catch (BuildException ex) {
+      return;
+    }
+    fail("should have thrown exception");
+  }
+
+  /**
+   * Tests if setting the classname to the name of a class that doesn't
+   * support Linker throws a BuildException.
+   *
+   */
+  public void testWrongType() {
+    LinkerDef linkerDef = (LinkerDef) create();
+    try {
+      linkerDef.setClassname("net.sf.antcontrib.cpptasks.CCTask");
+    } catch (ClassCastException ex) {
+      return;
+    }
+    fail("should have thrown exception");
+  }
+
+  /**
+   * Gets the command line arguments that appear before the filenames.
+   *
+   * @param processor processor under test
+   * @return command line arguments
+   */
+  protected String[] getPreArguments(final ProcessorDef processor) {
+    return ((CommandLineLinkerConfiguration) getConfiguration(processor))
+        .getPreArguments();
+  }
+
+  /**
+   * Sets the name attribute.
+   *
+   * @param linker
+   *            linker defintion
+   * @param name
+   *            linker name
+   */
+  private static void setLinkerName(final LinkerDef linker,
+                                    final String name) {
+    LinkerEnum linkerName = new LinkerEnum();
+    linkerName.setValue(name);
+    linker.setName(linkerName);
+  }
+
+  /**
+   * Tests that linkerarg's that appear in the base linker are effective when
+   * creating the command line for a linker that extends it.
+   */
+  public void testExtendsLinkerArgs() {
+    LinkerDef baseLinker = new LinkerDef();
+    LinkerArgument linkerArg = new LinkerArgument();
+    linkerArg.setValue("/base");
+    baseLinker.addConfiguredLinkerArg(linkerArg);
+    LinkerDef extendedLinker = (LinkerDef) createExtendedProcessorDef(
+        baseLinker);
+    String[] preArgs = getPreArguments(extendedLinker);
+    assertEquals(1, preArgs.length);
+    assertEquals("/base", preArgs[0]);
+  }
+
+  /**
+   * Tests that fileset's that appear in the base linker are effective when
+   * creating the command line for a linker that extends it.
+   * @throws IOException if unable to create or delete temporary file
+   */
+  public void testExtendsFileSet() throws IOException {
+    super.testExtendsFileSet(File.createTempFile("cpptaskstest", ".o"));
+  }
+
+  /**
+   * Tests that libset's that appear in the base linker are effective when
+   * creating the command line for a linker that extends it.
+   */
+  public void testExtendsLibSet() {
+    LinkerDef baseLinker = new LinkerDef();
+    LibrarySet libset = new LibrarySet();
+    LinkerDef extendedLinker = (LinkerDef) createExtendedProcessorDef(
+        baseLinker);
+    libset.setProject(baseLinker.getProject());
+    CUtil.StringArrayBuilder libs = new CUtil.StringArrayBuilder("advapi32");
+    libset.setLibs(libs);
+    baseLinker.addLibset(libset);
+    CommandLineLinkerConfiguration config = (CommandLineLinkerConfiguration)
+        getConfiguration(extendedLinker);
+    String[] libnames = config.getLibraryNames();
+    assertEquals(1, libnames.length);
+    assertEquals("advapi32", libnames[0]);
+  }
+
+  /**
+   * Tests that syslibset's that appear in the base linker are effective when
+   * creating the command line for a linker that extends it.
+   */
+  public void testExtendsSysLibSet() {
+    LinkerDef baseLinker = new LinkerDef();
+    SystemLibrarySet libset = new SystemLibrarySet();
+    LinkerDef extendedLinker = (LinkerDef) createExtendedProcessorDef(
+        baseLinker);
+    libset.setProject(baseLinker.getProject());
+    CUtil.StringArrayBuilder libs = new CUtil.StringArrayBuilder("advapi32");
+    libset.setLibs(libs);
+    baseLinker.addSyslibset(libset);
+    CommandLineLinkerConfiguration config = (CommandLineLinkerConfiguration)
+        getConfiguration(extendedLinker);
+    String[] libnames = config.getLibraryNames();
+    assertEquals(1, libnames.length);
+    assertEquals("advapi32", libnames[0]);
+  }
+
+  /**
+   * Tests that the base attribute in the base linker is effective when
+   * creating the command line for a linker that extends it.
+   */
+  public void testExtendsBase() {
+    LinkerDef baseLinker = new LinkerDef();
+    baseLinker.setBase(new FlexLong("10000"));
+    LinkerDef extendedLinker = (LinkerDef) createExtendedProcessorDef(
+        baseLinker);
+    setLinkerName(extendedLinker, "msvc");
+    String[] preArgs = getPreArguments(extendedLinker);
+    assertEquals("/NOLOGO", preArgs[0]);
+    assertEquals("/SUBSYSTEM:WINDOWS", preArgs[1]);
+    assertEquals("/INCREMENTAL:NO", preArgs[2]);
+    assertEquals("/BASE:0x2710", preArgs[3]);
+  }
+
+  /**
+   * Tests that the stack attribute in the base linker is effective when
+   * creating the command line for a linker that extends it.
+   */
+  public void testExtendsStack() {
+    LinkerDef baseLinker = new LinkerDef();
+    baseLinker.setStack(new FlexInteger("10000"));
+    LinkerDef extendedLinker = (LinkerDef) createExtendedProcessorDef(
+        baseLinker);
+    setLinkerName(extendedLinker, "msvc");
+    String[] preArgs = getPreArguments(extendedLinker);
+    assertEquals("/NOLOGO", preArgs[0]);
+    assertEquals("/SUBSYSTEM:WINDOWS", preArgs[1]);
+    assertEquals("/INCREMENTAL:NO", preArgs[2]);
+    assertEquals("/STACK:0x2710", preArgs[3]);
+  }
+
+  /**
+   * Tests that the entry attribute in the base linker is effective when
+   * creating the command line for a linker that extends it.
+   */
+  public void testExtendsEntry() {
+    LinkerDef baseLinker = new LinkerDef();
+    baseLinker.setEntry("foo");
+    LinkerDef extendedLinker = (LinkerDef) createExtendedProcessorDef(
+        baseLinker);
+    String[] preArgs = getPreArguments(extendedLinker);
+    assertEquals("-e", preArgs[0]);
+    assertEquals("foo", preArgs[1]);
+  }
+
+  /**
+   * Tests that the fixed attribute in the base linker is effective when
+   * creating the command line for a linker that extends it.
+   */
+  public void testExtendsFixed() {
+    LinkerDef baseLinker = new LinkerDef();
+    baseLinker.setFixed(true);
+    LinkerDef extendedLinker = (LinkerDef) createExtendedProcessorDef(
+        baseLinker);
+    setLinkerName(extendedLinker, "msvc");
+    String[] preArgs = getPreArguments(extendedLinker);
+    assertEquals("/NOLOGO", preArgs[0]);
+    assertEquals("/SUBSYSTEM:WINDOWS", preArgs[1]);
+    assertEquals("/INCREMENTAL:NO", preArgs[2]);
+    assertEquals("/FIXED", preArgs[3]);
+  }
+
+  /**
+   * Tests that the incremental attribute in the base linker is effective when
+   * creating the command line for a linker that extends it.
+   */
+  public void testExtendsIncremental() {
+    LinkerDef baseLinker = new LinkerDef();
+    baseLinker.setIncremental(true);
+    LinkerDef extendedLinker = (LinkerDef) createExtendedProcessorDef(
+        baseLinker);
+    setLinkerName(extendedLinker, "msvc");
+    String[] preArgs = getPreArguments(extendedLinker);
+    assertEquals("/NOLOGO", preArgs[0]);
+    assertEquals("/SUBSYSTEM:WINDOWS", preArgs[1]);
+    assertEquals("/INCREMENTAL:YES", preArgs[2]);
+  }
+
+  /**
+   * Tests that the map attribute in the base linker is effective when
+   * creating the command line for a linker that extends it.
+   */
+  public void testExtendsMap() {
+    LinkerDef baseLinker = new LinkerDef();
+    baseLinker.setMap(true);
+    LinkerDef extendedLinker = (LinkerDef) createExtendedProcessorDef(
+        baseLinker);
+    setLinkerName(extendedLinker, "msvc");
+    String[] preArgs = getPreArguments(extendedLinker);
+    assertEquals("/NOLOGO", preArgs[0]);
+    assertEquals("/SUBSYSTEM:WINDOWS", preArgs[1]);
+    assertEquals("/INCREMENTAL:NO", preArgs[2]);
+    assertEquals("/MAP", preArgs[3]);
+  }
+
+  /**
+   * Tests that the rebuild attribute in the base linker is effective when
+   * creating the command line for a linker that extends it.
+   */
+  public void testExtendsRebuild() {
+    testExtendsRebuild(new LinkerDef());
+  }
+
+  /**
+   * Tests that the name attribute in the base linker is effective when
+   * creating the command line for a linker that extends it.
+   */
+  public void testExtendsName() {
+    LinkerDef baseLinker = new LinkerDef();
+    setLinkerName(baseLinker, "msvc");
+    LinkerDef extendedLinker = (LinkerDef) createExtendedProcessorDef(
+        baseLinker);
+    extendedLinker.setBase(new FlexLong("10000"));
+    String[] preArgs = getPreArguments(extendedLinker);
+    assertEquals("/NOLOGO", preArgs[0]);
+    assertEquals("/SUBSYSTEM:WINDOWS", preArgs[1]);
+    assertEquals("/INCREMENTAL:NO", preArgs[2]);
+    assertEquals("/BASE:0x2710", preArgs[3]);
+  }
+
+  /**
+   * Tests that the classname attribute in the base linker is effective when
+   * creating the command line for a linker that extends it.
+   */
+  public void testExtendsClassname() {
+    LinkerDef baseLinker = new LinkerDef();
+    baseLinker
+        .setClassname("net.sf.antcontrib.cpptasks.devstudio.DevStudioLinker");
+    LinkerDef extendedLinker = (LinkerDef) createExtendedProcessorDef(
+        baseLinker);
+    extendedLinker.setBase(new FlexLong("10000"));
+    String[] preArgs = getPreArguments(extendedLinker);
+    assertEquals("/NOLOGO", preArgs[0]);
+    assertEquals("/SUBSYSTEM:WINDOWS", preArgs[1]);
+    assertEquals("/INCREMENTAL:NO", preArgs[2]);
+    assertEquals("/BASE:0x2710", preArgs[3]);
+  }
+}