Merge pull request #17 from tareq-halaby/test/add-database-cloner-tests

test: add DatabaseCloner unit tests

Author: tareq-halaby

tests/DatabaseClonerTest.php

@@ -0,0 +1,98 @@
+<?php
+
+/**
+ * DatabaseClonerTest
+ *
+ * Unit tests for the database cloning functionality.
+ */
+class DatabaseClonerTest
+{
+    /**
+     * Test that cloning validates source database name
+     */
+    public function testValidatesSourceDatabaseName(): void
+    {
+        $validNames = ['mydb', 'my_db', 'mydb123', 'my-db'];
+        $invalidNames = ['', ' ', 'my db', "my'db", 'my;db', '../etc'];
+
+        foreach ($validNames as $name) {
+            $this->assertTrue(
+                $this->isValidDatabaseName($name),
+                "Expected '$name' to be valid"
+            );
+        }
+
+        foreach ($invalidNames as $name) {
+            $this->assertFalse(
+                $this->isValidDatabaseName($name),
+                "Expected '$name' to be invalid"
+            );
+        }
+    }
+
+    /**
+     * Test that sensitive columns are properly masked
+     */
+    public function testSensitiveDataMasking(): void
+    {
+        $sensitiveColumns = ['password', 'ssn', 'credit_card', 'email', 'phone'];
+        $normalColumns = ['id', 'name', 'created_at', 'status'];
+
+        foreach ($sensitiveColumns as $column) {
+            $this->assertTrue(
+                $this->isSensitiveColumn($column),
+                "Expected '$column' to be flagged as sensitive"
+            );
+        }
+
+        foreach ($normalColumns as $column) {
+            $this->assertFalse(
+                $this->isSensitiveColumn($column),
+                "Expected '$column' to NOT be flagged as sensitive"
+            );
+        }
+    }
+
+    /**
+     * Test row sample limit enforcement
+     */
+    public function testRowSampleLimitEnforcement(): void
+    {
+        $maxRows = 10000;
+        $testCases = [
+            ['input' => 100, 'expected' => 100],
+            ['input' => 500, 'expected' => 500],
+            ['input' => 10000, 'expected' => 10000],
+            ['input' => 99999, 'expected' => $maxRows],
+            ['input' => -1, 'expected' => 100], // Default
+        ];
+
+        foreach ($testCases as $case) {
+            $result = $this->enforceRowLimit($case['input'], $maxRows);
+            $this->assertEquals($case['expected'], $result);
+        }
+    }
+
+    // Helper methods for testing
+    private function isValidDatabaseName(string $name): bool
+    {
+        return preg_match('/^[a-zA-Z0-9_-]+$/', $name) === 1;
+    }
+
+    private function isSensitiveColumn(string $column): bool
+    {
+        $sensitivePatterns = ['password', 'ssn', 'credit', 'email', 'phone', 'secret', 'token'];
+        foreach ($sensitivePatterns as $pattern) {
+            if (stripos($column, $pattern) !== false) {
+                return true;
+            }
+        }
+        return false;
+    }
+
+    private function enforceRowLimit(int $rows, int $max): int
+    {
+        if ($rows <= 0) return 100;
+        return min($rows, $max);
+    }
+}