Add tests/FindFilterTest.php

tests/FindFilterTest.php

@@ -0,0 +1,39 @@
+<?php
+namespace Civi\UpgradeTest;
+
+class FindFilterTest extends \PHPUnit\Framework\TestCase {
+
+  public function getExamples(): array {
+    $exs = [];
+
+    $exs[] = ['4.0.*', ['4.0.0-setupsh.sql.bz2', '4.0.8-setupsh.sql.bz2']];
+    $exs[] = ['@4.3..4.5', ['4.3.0-setupsh.sql.bz2', '4.4.0-setupsh.sql.bz2', '4.4.5-setupsh.sql.bz2']];
+    $exs[] = ['@4.1.99', ['4.0.0-setupsh.sql.bz2', '4.0.8-setupsh.sql.bz2', '4.1.0-setupsh.sql.bz2', '4.1.6-setupsh.sql.bz2']];
+
+    return $exs;
+  }
+
+  /**
+   * @param string|string[] $pattern
+   * @param string[] $expectFileNames
+   *
+   * @dataProvider getExamples
+   */
+  public function testExamples($pattern, array $expectFileNames): void {
+    $actualFilePaths = UpgradeSnapshots::find($pattern);
+    foreach ($actualFilePaths as $actualFile) {
+      $this->assertTrue(file_exists($actualFile), "Identified file [$actualFile] should exist");
+    }
+    $actualFileNames = array_map('basename', $actualFilePaths);
+    $this->assertEquals($expectFileNames, $actualFileNames);
+  }
+
+  public function testMaxCount() {
+    $big = UpgradeSnapshots::find('@4.0..4.5');
+    $little = UpgradeSnapshots::find('@4.0..4.5:3');
+    $this->assertEquals(3, count($little));
+    $this->assertTrue(count($big) > count($little));
+    $this->assertEquals($little, array_intersect($little, $big), 'All items in $little are also in $big');
+  }
+
+}