Problem with Code Coverage Reporting

[kenjis]

Now I can't generate code coverage report.

[vagrant@localhost project]$ phpunit --colors --coverage-text=coverage.txt --coverage-html=coverage
PHPUnit 5.0.10 by Sebastian Bergmann and contributors.

............................................................... 63 / 272 ( 23%)
............................................................... 126 / 272 ( 46%)
............................................................... 189 / 272 ( 69%)
............................................................... 252 / 272 ( 92%)
.................... 272 / 272 (100%)

Time: 15.86 seconds, Memory: 14.00Mb

OK (272 tests, 514 assertions)

Generating code coverage report in HTML format ...PHP Fatal error: Cannot declare class CodeIgniter\PageNotFoundException, because the name is already in use in /mnt/project/system/Debug/CustomExceptions.php on line 49
PHP Stack trace:
PHP 1. {main}() /home/vagrant/.composer/vendor/phpunit/phpunit/phpunit:0
PHP 2. PHPUnit_TextUI_Command::main() /home/vagrant/.composer/vendor/phpunit/phpunit/phpunit:47
PHP 3. PHPUnit_TextUI_Command->run() /home/vagrant/.composer/vendor/phpunit/phpunit/src/TextUI/Command.php:105
PHP 4. PHPUnit_TextUI_TestRunner->doRun() /home/vagrant/.composer/vendor/phpunit/phpunit/src/TextUI/Command.php:154
PHP 5. PHP_CodeCoverage_Report_HTML->process() /home/vagrant/.composer/vendor/phpunit/phpunit/src/TextUI/TestRunner.php:486
PHP 6. PHP_CodeCoverage->getReport() /home/vagrant/.composer/vendor/phpunit/php-code-coverage/src/CodeCoverage/Report/HTML.php:68
PHP 7. PHP_CodeCoverage_Report_Factory->create() /home/vagrant/.composer/vendor/phpunit/php-code-coverage/src/CodeCoverage.php:144
PHP 8. PHP_CodeCoverage->getData() /home/vagrant/.composer/vendor/phpunit/php-code-coverage/src/CodeCoverage/Report/Factory.php:24
PHP 9. PHP_CodeCoverage->addUncoveredFilesFromWhitelist() /home/vagrant/.composer/vendor/phpunit/php-code-coverage/src/CodeCoverage.php:178
PHP 10. PHP_CodeCoverage->processUncoveredFileFromWhitelist() /home/vagrant/.composer/vendor/phpunit/php-code-coverage/src/CodeCoverage.php:680
PHP 11. include_once() /home/vagrant/.composer/vendor/phpunit/php-code-coverage/src/CodeCoverage.php:707

Fatal error: Cannot declare class CodeIgniter\PageNotFoundException, because the name is already in use in /mnt/project/system/Debug/CustomExceptions.php on line 49

Call Stack:
 0.0041 355592 1. {main}() /home/vagrant/.composer/vendor/phpunit/phpunit/phpunit:0
 0.0349 1003128 2. PHPUnit_TextUI_Command::main() /home/vagrant/.composer/vendor/phpunit/phpunit/phpunit:47
 0.0349 1003240 3. PHPUnit_TextUI_Command->run() /home/vagrant/.composer/vendor/phpunit/phpunit/src/TextUI/Command.php:105
 0.7600 4106488 4. PHPUnit_TextUI_TestRunner->doRun() /home/vagrant/.composer/vendor/phpunit/phpunit/src/TextUI/Command.php:154
 15.8625 10192872 5. PHP_CodeCoverage_Report_HTML->process() /home/vagrant/.composer/vendor/phpunit/phpunit/src/TextUI/TestRunner.php:486
 15.8630 10192928 6. PHP_CodeCoverage->getReport() /home/vagrant/.composer/vendor/phpunit/php-code-coverage/src/CodeCoverage/Report/HTML.php:68
 15.8650 10213464 7. PHP_CodeCoverage_Report_Factory->create() /home/vagrant/.composer/vendor/phpunit/php-code-coverage/src/CodeCoverage.php:144
 15.8651 10213464 8. PHP_CodeCoverage->getData() /home/vagrant/.composer/vendor/phpunit/php-code-coverage/src/CodeCoverage/Report/Factory.php:24
 15.8651 10213464 9. PHP_CodeCoverage->addUncoveredFilesFromWhitelist() /home/vagrant/.composer/vendor/phpunit/php-code-coverage/src/CodeCoverage.php:178
 15.9923 10478424 10. PHP_CodeCoverage->processUncoveredFileFromWhitelist() /home/vagrant/.composer/vendor/phpunit/php-code-coverage/src/CodeCoverage.php:680
 15.9972 10538168 11. include_once('/mnt/project/system/Debug/Exceptions.php') /home/vagrant/.composer/vendor/phpunit/php-code-coverage/src/CodeCoverage.php:707

This is because of the following require:

--- a/system/Debug/Exceptions.php
+++ b/system/Debug/Exceptions.php
@@ -35,7 +35,7 @@
 * @filesource
 */

-require dirname(__FILE__).'/CustomExceptions.php';
+require_once dirname(__FILE__).'/CustomExceptions.php';

 class Exceptions
 {

The above patch fixes the error but then it seems it shows debug bar and raise another error:

PHP Fatal error: Uncaught Error: Call to undefined method PHP_CodeCoverage::renderTimeline() in /mnt/project/system/Debug/Toolbar/View/toolbar.tpl.php:38
Stack trace:
#0 /home/vagrant/.composer/vendor/phpunit/php-code-coverage/src/CodeCoverage.php(707): include_once()
#1 /home/vagrant/.composer/vendor/phpunit/php-code-coverage/src/CodeCoverage.php(680): PHP_CodeCoverage->processUncoveredFileFromWhitelist('/mnt/project/sy...', Array, Array)
#2 /home/vagrant/.composer/vendor/phpunit/php-code-coverage/src/CodeCoverage.php(178): PHP_CodeCoverage->addUncoveredFilesFromWhitelist()
#3 /home/vagrant/.composer/vendor/phpunit/php-code-coverage/src/CodeCoverage/Report/Factory.php(24): PHP_CodeCoverage->getData()
#4 /home/vagrant/.composer/vendor/phpunit/php-code-coverage/src/CodeCoverage.php(144): PHP_CodeCoverage_Report_Factory->create(Object(PHP_CodeCoverage))
#5 /home/vagrant/.composer/vendor/phpunit/php-code-coverage/src/CodeCoverage/Report/HTML.php(68): PHP_CodeCoverage->getReport()
#6 /home/vagrant/.composer/vendor/phpunit/phpunit in /mnt/project/system/Debug/Toolbar/View/toolbar.tpl.php on line 38

Fatal error: Uncaught Error: Call to undefined method PHP_CodeCoverage::renderTimeline() in /mnt/project/system/Debug/Toolbar/View/toolbar.tpl.php on line 38

Error: Call to undefined method PHP_CodeCoverage::renderTimeline() in /mnt/project/system/Debug/Toolbar/View/toolbar.tpl.php on line 38

Call Stack:
 0.0059 355592 1. {main}() /home/vagrant/.composer/vendor/phpunit/phpunit/phpunit:0
 0.0361 1003128 2. PHPUnit_TextUI_Command::main() /home/vagrant/.composer/vendor/phpunit/phpunit/phpunit:47
 0.0361 1003240 3. PHPUnit_TextUI_Command->run() /home/vagrant/.composer/vendor/phpunit/phpunit/src/TextUI/Command.php:105
 0.5748 4106488 4. PHPUnit_TextUI_TestRunner->doRun() /home/vagrant/.composer/vendor/phpunit/phpunit/src/TextUI/Command.php:154
 15.0706 10192872 5. PHP_CodeCoverage_Report_HTML->process() /home/vagrant/.composer/vendor/phpunit/phpunit/src/TextUI/TestRunner.php:486
 15.0711 10192928 6. PHP_CodeCoverage->getReport() /home/vagrant/.composer/vendor/phpunit/php-code-coverage/src/CodeCoverage/Report/HTML.php:68
 15.0756 10213464 7. PHP_CodeCoverage_Report_Factory->create() /home/vagrant/.composer/vendor/phpunit/php-code-coverage/src/CodeCoverage.php:144
 15.0757 10213464 8. PHP_CodeCoverage->getData() /home/vagrant/.composer/vendor/phpunit/php-code-coverage/src/CodeCoverage/Report/Factory.php:24
 15.0757 10213464 9. PHP_CodeCoverage->addUncoveredFilesFromWhitelist() /home/vagrant/.composer/vendor/phpunit/php-code-coverage/src/CodeCoverage.php:178
 15.3139 10653368 10. PHP_CodeCoverage->processUncoveredFileFromWhitelist() /home/vagrant/.composer/vendor/phpunit/php-code-coverage/src/CodeCoverage.php:680
 15.3232 10683384 11. include_once('/mnt/project/system/Debug/Toolbar/View/toolbar.tpl.php') /home/vagrant/.composer/vendor/phpunit/php-code-coverage/src/CodeCoverage.php:707

[kenjis]

I was able to generate report. See #14

Code Coverage Report: 
 2016-03-10 16:45:43 

 Summary: 
 Classes: 40.62% (26/64) 
 Methods: 39.49% (154/390) 
 Lines: 47.98% (1246/2597)