diff --git a/tests/UnitTests/TemplateSource/Comments/CommentsTest.php b/tests/UnitTests/TemplateSource/Comments/CommentsTest.php
index 3d9397b5..281b5aec 100644
--- a/tests/UnitTests/TemplateSource/Comments/CommentsTest.php
+++ b/tests/UnitTests/TemplateSource/Comments/CommentsTest.php
@@ -10,7 +10,7 @@
  * class for security test
  *
  * @runTestsInSeparateProcess
- * @preserveGlobalState disabled
+ * @preserveGlobalState    disabled
  * @backupStaticAttributes enabled
  */
 class CommentsTest extends PHPUnit_Smarty
@@ -26,67 +26,54 @@ class CommentsTest extends PHPUnit_Smarty
     }
 
     /**
-     * test simple comments
+     * Test comments
+     *
+     * @preserveGlobalState disabled
+     * @dataProvider        dataTestComments
      */
-    public function testSimpleComment1()
+    public function testComments($code, $result, $testName, $testNumber)
     {
-        $tpl = $this->smarty->createTemplate("eval:{* this is a comment *}");
-        $this->assertEquals("", $this->smarty->fetch($tpl));
+        $name = empty($testName) ? $testNumber : $testName;
+        $file = "testComments_{$name}.tpl";
+        $this->makeTemplateFile($file, $code);
+        $this->smarty->template_dir = './templates_tmp';
+        $this->assertEquals($result,
+                            $this->smarty->fetch($file),
+                            $file);
     }
 
-    public function testSimpleComment2()
+    /*
+      * Data provider für testComments
+      */
+    public function dataTestComments()
     {
-        $tpl = $this->smarty->createTemplate("eval:{* another \$foo comment *}");
-        $this->assertEquals("", $this->smarty->fetch($tpl));
+        $i = 1;
+        /*
+                    * Code
+                    * result
+                    * test name
+                    * test number
+                    */
+        return array(array('{* this is a comment *}', '', 'T1', $i++),
+                     array('{* another $foo comment *}', '', 'T2', $i++),
+                     array('{* another  comment *}some in between{* another  comment *}', 'some in between',
+                           'T3', $i++),
+                     array("{* multi line \n comment *}", '', 'T4', $i++),
+                     array('{* /* foo * / *}', '', 'T5', $i++),
+                     array("A{* comment *}B\nC", "AB\nC", 'T6', $i++),
+                     array("D{* comment *}\n{* comment *}E\nF", "DE\nF", 'T7', $i++),
+                     array("G{* multi \nline *}H", "GH", 'T8', $i++),
+                     array("I{* multi \nline *}\nJ", "IJ", 'T9', $i++),
+                     array("=\n{* comment *}\n{* comment *}\n    b\n{* comment *}\n{* comment *}\n=", "=\n    b\n=", 'T10', $i++),
+                     array("=\na\n{* comment 1 *}\n{* comment 2 *}\n{* comment 3 *}\nb\n=", "=\na\nb\n=", 'T11', $i++),
+                     array("=\na\n{* comment 1 *}\n {* comment 2 *}\n{* comment 3 *}\nb\n=", "=\na\n b\n=", 'T12', $i++),
+                     array("=\na\n{* comment 1 *}\n{* comment 2 *} \n{* comment 3 *}\nb\n=", "=\na\n \nb\n=", 'T13', $i++),
+                     array("=\na\n{* comment 1 *}\n {* comment 2 *} \n{* comment 3 *}\nb\n=", "=\na\n  \nb\n=", 'T14', $i++),
+        );
     }
 
-    public function testSimpleComment3()
-    {
-        $tpl = $this->smarty->createTemplate("eval:{* another  comment *}some in between{* another  comment *}");
-        $this->assertEquals("some in between", $this->smarty->fetch($tpl));
-    }
-
-    public function testSimpleComment4()
-    {
-        $tpl = $this->smarty->createTemplate("eval:{* multi line \n comment *}");
-        $this->assertEquals("", $this->smarty->fetch($tpl));
-    }
-
-    public function testSimpleComment5()
-    {
-        $tpl = $this->smarty->createTemplate("eval:{* /* foo * / *}");
-        $this->assertEquals("", $this->smarty->fetch($tpl));
-    }
-
-    /**
-     * test comment text combinations
-     */
-    public function testTextComment1()
-    {
-        $tpl = $this->smarty->createTemplate("eval:A{* comment *}B\nC");
-        $this->assertEquals("AB\nC", $this->smarty->fetch($tpl));
-    }
-
-    public function testTextComment2()
-    {
-        $tpl = $this->smarty->createTemplate("eval:D{* comment *}\n{* comment *}E\nF");
-        $this->assertEquals("D\nE\nF", $this->smarty->fetch($tpl));
-    }
-
-    public function testTextComment3()
-    {
-        $tpl = $this->smarty->createTemplate("eval:G{* multi \nline *}H");
-        $this->assertEquals("GH", $this->smarty->fetch($tpl));
-    }
-
-    public function testTextComment4()
-    {
-        $tpl = $this->smarty->createTemplate("eval:I{* multi \nline *}\nJ");
-        $this->assertEquals("I\nJ", $this->smarty->fetch($tpl));
-    }
     public function testTextComment5()
     {
-        $tpl = $this->smarty->createTemplate("longcomment.tpl");
-        $this->assertEquals("I\nJ", $this->smarty->fetch($tpl));
+        $this->assertEquals("IJ", $this->smarty->fetch("longcomment.tpl"), 'Comments longcomment.tpl');
     }
 }
diff --git a/tests/UnitTests/TemplateSource/TagTests/SetFilter/CompileSetfilterTest.php b/tests/UnitTests/TemplateSource/TagTests/SetFilter/CompileSetfilterTest.php
index 82ab2086..21227faa 100644
--- a/tests/UnitTests/TemplateSource/TagTests/SetFilter/CompileSetfilterTest.php
+++ b/tests/UnitTests/TemplateSource/TagTests/SetFilter/CompileSetfilterTest.php
@@ -35,14 +35,4 @@ class CompileSetfilterTest extends PHPUnit_Smarty
         $tpl->assign('foo', '<a@b.c>');
         $this->assertEquals("<a@b.c> &lt;a@b.c&gt; <a [AT] b [DOT] c> &lt;a@b.c&gt; <a@b.c>", $this->smarty->fetch($tpl));
     }
-    /**
-     * @runInSeparateProcess
-     * @preserveGlobalState disabled
-     */
-    public function testNestedSetfilter2()
-    {
-        $tpl = $this->smarty->createTemplate('string:{$foo}{setfilter htmlspecialchars} {$foo}{setfilter escape:"mail"} {$foo}{/setfilter} {$foo}{/setfilter} {$foo}');
-        $tpl->assign('foo', '<a@b.c>');
-        $this->assertEquals("<a@b.c> &lt;a@b.c&gt; <a [AT] b [DOT] c> &lt;a@b.c&gt; <a@b.c>", $this->smarty->fetch($tpl));
-    }
 }
diff --git a/tests/UnitTests/TemplateSource/_Issues/topic26878/NewlineSpacing.php b/tests/UnitTests/TemplateSource/_Issues/topic26878/NewlineSpacing.php
new file mode 100644
index 00000000..6feac558
--- /dev/null
+++ b/tests/UnitTests/TemplateSource/_Issues/topic26878/NewlineSpacing.php
@@ -0,0 +1,69 @@
+<?php
+/**
+ * Smarty PHPunit tests compiler errors
+ *
+ * @package PHPunit
+ * @author  Uwe Tews
+ */
+
+/**
+ * class for compiler tests
+ *
+ * @runTestsInSeparateProcess
+ * @preserveGlobalState    disabled
+ * @backupStaticAttributes enabled
+ */
+class NewlineSpacing extends PHPUnit_Smarty
+{
+    public function setUp()
+    {
+        $this->setUpSmarty(dirname(__FILE__));
+    }
+
+    public function testInit()
+    {
+        $this->cleanDirs();
+    }
+
+    /**
+     * Test spacings
+     *
+     * @preserveGlobalState disabled
+     * @dataProvider        dataTestSpacing
+     * @runInSeparateProcess
+     */
+    public function testSpacing($code, $result, $testName, $testNumber)
+    {
+        $name = empty($testName) ? $testNumber : $testName;
+        $file = "Spacing_{$name}.tpl";
+        $this->makeTemplateFile($file, $code);
+        $this->smarty->template_dir = './templates_tmp';
+        $this->smarty->assign('file', $file);
+        $this->smarty->assign('foo', 'bar');
+        $this->assertEquals($result,
+                            $this->smarty->fetch($file),
+                            $file);
+    }
+
+    /*
+      * Data provider für testSpacing
+      */
+    public function dataTestSpacing()
+    {
+        $i = 1;
+        /*
+                    * Code
+                    * result
+                    * test name
+                    * test number
+                    */
+        return array(
+            array("=====================\n{if true}\n{foreach from=array(1) item='i'}\n    <htmltag />\n{/foreach}\n{/if}\n=====================", "=====================\n    <htmltag />\n=====================", 'T1', $i++),
+            array("=====================\n{if true}\n{if true}\n    <htmltag />\n{/if}\n{/if}\n=====================", "=====================\n    <htmltag />\n=====================", 'T2', $i++),
+            array("=====================\n{* comment *}\n{* comment *}\n    <htmltag />\n{* comment *}\n{* comment *}\n=====================", "=====================\n    <htmltag />\n=====================", 'T3', $i++),
+            array("=====================\na\n{* comment 1 *}\n{* comment 2 *}\n{* comment 3 *}\nb\n=====================", "=====================\na\nb\n=====================", 'T4', $i++),
+            array("=====================\na\nb{if true}\nd<span></span>\nf{/if}\nh\n=====================", "=====================\na\nbd<span></span>\nfh\n=====================", 'T5', $i++),
+        );
+    }
+
+}
\ No newline at end of file
diff --git a/tests/UnitTests/TemplateSource/_Issues/topic26878/cache/dummy.txt b/tests/UnitTests/TemplateSource/_Issues/topic26878/cache/dummy.txt
new file mode 100644
index 00000000..2995a4d0
--- /dev/null
+++ b/tests/UnitTests/TemplateSource/_Issues/topic26878/cache/dummy.txt
@@ -0,0 +1 @@
+dummy
\ No newline at end of file
diff --git a/tests/UnitTests/TemplateSource/_Issues/topic26878/templates_c/dummy.txt b/tests/UnitTests/TemplateSource/_Issues/topic26878/templates_c/dummy.txt
new file mode 100644
index 00000000..2995a4d0
--- /dev/null
+++ b/tests/UnitTests/TemplateSource/_Issues/topic26878/templates_c/dummy.txt
@@ -0,0 +1 @@
+dummy
\ No newline at end of file
diff --git a/tests/UnitTests/TemplateSource/_Issues/topic26878/templates_tmp/dummy.txt b/tests/UnitTests/TemplateSource/_Issues/topic26878/templates_tmp/dummy.txt
new file mode 100644
index 00000000..2995a4d0
--- /dev/null
+++ b/tests/UnitTests/TemplateSource/_Issues/topic26878/templates_tmp/dummy.txt
@@ -0,0 +1 @@
+dummy
\ No newline at end of file