From 044836b42672d42de7e7449a376d87ab571af250 Mon Sep 17 00:00:00 2001
From: MarkBaker <mark@lange.demon.co.uk>
Date: Sat, 5 Mar 2022 22:31:52 +0100
Subject: [PATCH] Unit test for the Calculation Engine debug log

---
 .../Calculation/CalculationLoggingTest.php    | 125 ++++++++++++++++++
 1 file changed, 125 insertions(+)
 create mode 100644 tests/PhpSpreadsheetTests/Calculation/CalculationLoggingTest.php

diff --git a/tests/PhpSpreadsheetTests/Calculation/CalculationLoggingTest.php b/tests/PhpSpreadsheetTests/Calculation/CalculationLoggingTest.php
new file mode 100644
index 00000000..cb110574
--- /dev/null
+++ b/tests/PhpSpreadsheetTests/Calculation/CalculationLoggingTest.php
@@ -0,0 +1,125 @@
+<?php
+
+namespace PhpOffice\PhpSpreadsheetTests\Calculation;
+
+use PhpOffice\PhpSpreadsheet\Calculation\Calculation;
+use PhpOffice\PhpSpreadsheet\Spreadsheet;
+use PHPUnit\Framework\TestCase;
+
+class CalculationLoggingTest extends TestCase
+{
+    public function testFormulaWithLogging(): void
+    {
+        $spreadsheet = new Spreadsheet();
+        $sheet = $spreadsheet->getActiveSheet();
+
+        $sheet->fromArray(
+            [
+                [1, 2, 3],
+                [4, 5, 6],
+                [7, 8, 9],
+            ]
+        );
+
+        $debugLog = Calculation::getInstance($spreadsheet)->getDebugLog();
+        $debugLog->setWriteDebugLog(true);
+
+        $cell = $sheet->getCell('E5');
+        $cell->setValue('=ROUND(SQRT(SUM(A1:C3)), 1)');
+        self::assertEquals(6.7, $cell->getCalculatedValue());
+
+        $log = $debugLog->getLog();
+        self::assertIsArray($log);
+        $entries = count($log);
+        self::assertGreaterThan(0, $entries);
+
+        $finalEntry = array_pop($log);
+        self::assertStringContainsString('Evaluation Result', $finalEntry);
+    }
+
+    public function testFormulaWithMultipleCellLogging(): void
+    {
+        $spreadsheet = new Spreadsheet();
+        $sheet = $spreadsheet->getActiveSheet();
+
+        $sheet->fromArray(
+            [
+                [1, 2, 3],
+                [4, 5, 6],
+                [7, 8, 9],
+            ]
+        );
+
+        $debugLog = Calculation::getInstance($spreadsheet)->getDebugLog();
+        $debugLog->setWriteDebugLog(true);
+
+        $cell = $sheet->getCell('E1');
+        $cell->setValue('=SUM(A1:C3)');
+
+        $cell = $sheet->getCell('E3');
+        $cell->setValue('=SQRT(E1)');
+
+        $cell = $sheet->getCell('E5');
+        $cell->setValue('=ROUND(E3, 1)');
+        self::assertEquals(6.7, $cell->getCalculatedValue());
+
+        $log = $debugLog->getLog();
+
+        self::assertIsArray($log);
+        $entries = count($log);
+        self::assertGreaterThan(0, $entries);
+
+        $finalEntry = array_pop($log);
+        self::assertStringContainsString('Evaluation Result', $finalEntry);
+
+        $e1Log = array_filter($log, function ($entry) {
+            return strpos($entry, 'E1') !== false;
+        });
+        $e1Entries = count($e1Log);
+        self::assertGreaterThan(0, $e1Entries);
+
+        $e1FinalEntry = array_pop($e1Log);
+        self::assertStringContainsString('Evaluation Result', $e1FinalEntry);
+
+        $e3Log = array_filter($log, function ($entry) {
+            return strpos($entry, 'E1') !== false;
+        });
+        $e3Entries = count($e3Log);
+        self::assertGreaterThan(0, $e3Entries);
+
+        $e3FinalEntry = array_pop($e3Log);
+        self::assertStringContainsString('Evaluation Result', $e3FinalEntry);
+    }
+
+    public function testFlushLog(): void
+    {
+        $spreadsheet = new Spreadsheet();
+        $sheet = $spreadsheet->getActiveSheet();
+
+        $sheet->fromArray(
+            [
+                [1, 2, 3],
+                [4, 5, 6],
+                [7, 8, 9],
+            ]
+        );
+
+        $debugLog = Calculation::getInstance($spreadsheet)->getDebugLog();
+        $debugLog->setWriteDebugLog(true);
+
+        $cell = $sheet->getCell('E5');
+        $cell->setValue('=(1+-2)*3/4');
+        self::assertEquals(-0.75, $cell->getCalculatedValue());
+
+        $log = $debugLog->getLog();
+        self::assertIsArray($log);
+        $entries = count($log);
+        self::assertGreaterThan(0, $entries);
+
+        $debugLog->clearLog();
+
+        $log = $debugLog->getLog();
+        self::assertIsArray($log);
+        self::assertEmpty($log);
+    }
+}