From b023714f865d439d0fc69eb07db1c8d5b546ac13 Mon Sep 17 00:00:00 2001 From: Romulo De Lazzari Date: Sat, 16 May 2020 22:22:34 +0100 Subject: [PATCH] v1.0.0 --- .editorconfig | 21 + .gitignore | 1 + README.md | 29 + composer.json | 19 + composer.lock | 1531 +++++++++++++++++++++++++++++++++++++++++++++ src/Ema.php | 53 ++ tests/TestEma.php | 118 ++++ 7 files changed, 1772 insertions(+) create mode 100644 .editorconfig create mode 100644 .gitignore create mode 100644 README.md create mode 100644 composer.json create mode 100644 composer.lock create mode 100644 src/Ema.php create mode 100644 tests/TestEma.php diff --git a/.editorconfig b/.editorconfig new file mode 100644 index 0000000..0ec13d1 --- /dev/null +++ b/.editorconfig @@ -0,0 +1,21 @@ +# editorconfig.org +root = true + +[*] +indent_style = space +end_of_line = lf +indent_size = 2 +charset = utf-8 +trim_trailing_whitespace = true +insert_final_newline = true + +[*.{html,twig,md}] +indent_size = 2 + +[*.php] +charset = utf-8 +indent_style = tab +indent_size = 4 + +[*.md] +trim_trailing_whitespace = false diff --git a/.gitignore b/.gitignore new file mode 100644 index 0000000..22d0d82 --- /dev/null +++ b/.gitignore @@ -0,0 +1 @@ +vendor diff --git a/README.md b/README.md new file mode 100644 index 0000000..8b51a26 --- /dev/null +++ b/README.md @@ -0,0 +1,29 @@ +# Exponential Moving Average + +## Instalation + +``` +composer require romulodl/ema +``` + +or add `romulodl/ema` to your `composer.json`. Please check the latest version in releases. + +## Usage + +```php +$ema = new Romulodl\Ema(); +$ema->calculate([10, 12, 14, 20, 14, 10, 11]); +``` + +it also contains a static method: + +```php +Ema::calculateStatic([10, 12, 14, 20, 14, 10, 11]); +``` + + +## Why did you do this? + +The PECL Trading extension is crap and not everyone wants to install it. +I am building a trading bot and building more complex trading indicators that use EMA as a basic step. +I am also planning to open-source the other indicators (not the trading bot) diff --git a/composer.json b/composer.json new file mode 100644 index 0000000..1dde3ad --- /dev/null +++ b/composer.json @@ -0,0 +1,19 @@ +{ + "name": "rdelazzari/ema", + "description": "EMA without the PECL trader extension", + "require-dev": { + "phpunit/phpunit": "^8.5" + }, + "authors": [ + { + "name": "Romulo De Lazzari", + "email": "romulodelazzari@gmail.com" + } + ], + "require": {}, + "autoload": { + "psr-4": { + "Romulodl\\": "src/" + } + } +} 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round($ema->calculate($values), 2)); + $this->assertSame(9288.86, round(Ema::calculateStatic($values), 2)); + } + + public function testCalculateEmaWithPreviousValues(): void + { + $previous_values = [ + 7694.17, + 7774, + 7735.75, + 8784.20, + 8624.76, + 8830.52, + 8975.18, + 8900, + 8873.98, + 9022.78 + ]; + + $values = [ + 9148.27, + 9995, + 9807.49, + 9550.67, + 8719.53, + 8561.09, + 8808.71, + 9305.91, + 9786.80, + 9310.73 + ]; + + $ema = new Ema(); + $this->assertSame(9197.01, round($ema->calculate($values, $previous_values), 2)); + $this->assertSame(9197.01, round(Ema::calculateStatic($values, $previous_values), 2)); + } + + public function testCalculateEmaWithEmptyArray(): void + { + $this->expectException(Exception::class); + + $ema = new Ema(); + $ema->calculate([]); + Ema::calculateStatic([]); + } + + public function testCalculateStaticEmaWithEmptyArray(): void + { + $this->expectException(Exception::class); + Ema::calculateStatic([]); + } + + public function testCalculateEmaWithInvalidArray(): void + { + $values = [ + 9148.27, + 9995, + 9807.49, + 'hahah', + 8719.53, + 8561.09, + 8808.71, + 9305.91, + 9786.80, + 9310.73 + ]; + + $this->expectException(Exception::class); + + $ema = new Ema(); + $ema->calculate($values); + Ema::calculateStatic($values); + } + + public function testCalculateEmaStaticWithInvalidArray(): void + { + $values = [ + 9148.27, + 9995, + 9807.49, + 'hahah', + 8719.53, + 8561.09, + 8808.71, + 9305.91, + 9786.80, + 9310.73 + ]; + + $this->expectException(Exception::class); + + Ema::calculateStatic($values); + } +}