[t-lTBFjwvE] Upgrade travis PHP to diaginose deprecated warnings

Author: killertux

.travis.yml

@@ -1,16 +1,16 @@
-dist: trusty
+dist: bionic
 sudo: required
 
 language: php
 
 php:
-  - 7.1
+  - 7.4.28
 
 install:
   - composer validate --no-check-all --no-check-publish
   - composer install
 
-script:  ./vendor/bin/phpunit --coverage-clover=coverage.xml Test/
+script:  ./vendor/bin/phpunit Test\
 
 after_success:
   - bash <(curl -s https://codecov.io/bash)

Test/FilePropertyTest.php

@@ -2,7 +2,6 @@
 
 namespace Test;
 
-
 use PHPUnit\Framework\TestCase;
 
 class FilePropertyTest extends TestCase {

Test/XLSXWriterTest.php

@@ -152,7 +152,6 @@ public function testFreezeCells($freeze_cols, $freeze_rows, $expected_active_cel
 
 		$selections = $sheet_view->selection;
 		for ($i = 0; $i < count($expected_active_cells); $i++) {
-			$this->assertNotEmpty($selections[$i]);
 			$this->assertEquals($expected_active_cells[$i]['cell'], $selections[$i]['activeCell']);
 			$this->assertEquals($expected_active_cells[$i]['cell'], $selections[$i]['sqref']);
 			$this->assertEquals($expected_active_cells[$i]['pane'], $selections[$i]['pane']);