Add tests for unused before require

Author: sirbrillig

Tests/VariableAnalysisSniff/UnusedFollowedByRequireTest.php

@@ -0,0 +1,35 @@
+<?php
+namespace VariableAnalysis\Tests\VariableAnalysisSniff;
+
+use VariableAnalysis\Tests\BaseTestCase;
+
+class UnusedFollowedByRequire extends BaseTestCase {
+  public function testUnusedFollowedByRequireDefault() {
+    $fixtureFile = $this->getFixture('UnusedFollowedByRequireFixture.php');
+    $phpcsFile = $this->prepareLocalFileForSniffs($fixtureFile);
+    $phpcsFile->process();
+    $lines = $this->getWarningLineNumbersFromFile($phpcsFile);
+    $expectedWarnings = [
+      2,
+      3,
+      4,
+    ];
+    $this->assertEquals($expectedWarnings, $lines);
+  }
+
+  public function testUnusedFollowedByRequireWhenSet() {
+    $fixtureFile = $this->getFixture('UnusedFollowedByRequireFixture.php');
+    $phpcsFile = $this->prepareLocalFileForSniffs($fixtureFile);
+    $phpcsFile->ruleset->setSniffProperty(
+      'VariableAnalysis\Sniffs\CodeAnalysis\VariableAnalysisSniff',
+      'allowUnusedVariablesBeforeRequire',
+      'true'
+    );
+    $phpcsFile->process();
+    $lines = $this->getWarningLineNumbersFromFile($phpcsFile);
+    $expectedWarnings = [
+      4,
+    ];
+    $this->assertEquals($expectedWarnings, $lines);
+  }
+}

Tests/VariableAnalysisSniff/fixtures/UnusedFollowedByRequireFixture.php

@@ -0,0 +1,6 @@
+<?php
+function require_file_function($param) { // unused variable $param
+    $var = 'something'; // unused variable $var
+    activate_code($data); // undefined variable $data
+    require_once __DIR__ . '/views/my-view.php';
+}