fix issue #122

Author: Барабанов Тимофей Андреевич

src/main/java/org/assertj/assertions/generator/BaseAssertionGenerator.java

@@ -473,7 +473,9 @@ private String generateAssertionEntryPointMethodsFor(final Set<ClassDescription>
       // resolve class (ex: Player)
       // in case of inner classes like Movie.PublicCategory use class name with outer class i.e. Movie.PublicCategory.
       assertionEntryPointMethodContent = replace(assertionEntryPointMethodContent, CLASS_TO_ASSERT,
-                                                 classDescription.getFullyQualifiedClassName());
+              generatedAssertionsPackage == null ?
+                      classDescription.getFullyQualifiedAssertClassName() :
+                      generatedAssertionsPackage + "." + classDescription.getAssertClassName());
 
       allAssertThatsContentBuilder.append(lineSeparator).append(assertionEntryPointMethodContent);
     }
@@ -497,7 +499,7 @@ private String determineBestEntryPointsAssertionsClassPackage(final Set<ClassDes
   /**
    * Returns the target directory path where the assertions file for given classDescription will be created.
    *
-   * @param packageName package name 
+   * @param packageName package name
    * @return the target directory path corresponding to the given package.
    */
   private String getDirectoryPathCorrespondingToPackage(final String packageName) {
@@ -607,11 +609,12 @@ private String assertionContentForField(FieldDescription field, ClassDescription
 
   private String getTypeName(DataDescription fieldOrGetter) {
     if (generatedAssertionsPackage != null) {
-      // if the user has chosen to generate assertions in a given package we assume that 
+      // if the user has chosen to generate assertions in a given package we assume that
       return fieldOrGetter.getFullyQualifiedTypeName();
     }
-    // returns a simple class name if the field or getter type is in the same package as its owning type which is the package where the 
-    // Assert class is generated. 
+    // returns a simple class name if the field or getter type is in the same package as its owning type which is the package
+    // where the
+    // Assert class is generated.
     return fieldOrGetter.getTypeName();
   }