Initial commit

.gitignore

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+vendor/
+composer.lock
+.phpunit.result.cache

.travis.yml

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+language: php
+php:
+  - '7.4'
+  - nightly
+
+before_script:
+  - travis_retry composer self-update
+  - travis_retry composer install --no-interaction --prefer-source --dev
+
+script:
+  - vendor/bin/phpunit --coverage-clover=coverage.xml
+
+after_success:
+  - bash <(curl -s https://codecov.io/bash)

composer.json

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+{
+  "name": "mazanax/composer-version-semver",
+  "description": "Small helper to get current composer project version",
+  "type": "library",
+  "version": "1.0.0",
+  "license": "MIT",
+  "authors": [
+    {
+      "name": "Alexander Gorshkov",
+      "email": "agorshkov@mznx.ru"
+    }
+  ],
+  "minimum-stability": "stable",
+  "require": {
+    "php": "^7.4|^8.0",
+    "ext-json": "*",
+    "nikolaposa/version": "^4.1",
+    "mazanax/composer-project-version": "^1.0.0"
+  },
+  "autoload": {
+    "psr-4": {
+      "MZNX\\ComposerPackageSemver\\": "src/"
+    }
+  },
+  "autoload-dev": {
+    "psr-4": {
+      "MZNX\\ComposerPackageSemver\\Tests\\": "tests/"
+    }
+  },
+  "require-dev": {
+    "phpunit/phpunit": "^9.5"
+  }
+}

phpunit.xml.dist

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+<?xml version="1.0"?>
+<phpunit xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" bootstrap="vendor/autoload.php" xsi:noNamespaceSchemaLocation="https://schema.phpunit.de/9.3/phpunit.xsd">
+    <coverage>
+        <include>
+            <directory suffix=".php">./src/</directory>
+        </include>
+        <report>
+            <clover outputFile="clover.xml"/>
+        </report>
+    </coverage>
+    <testsuites>
+        <testsuite name="Unit">
+            <directory>./tests/</directory>
+        </testsuite>
+    </testsuites>
+    <logging/>
+</phpunit>

src/PackageVersionSemver.php

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+<?php
+
+declare(strict_types=1);
+
+namespace MZNX\ComposerPackageSemver;
+
+use MZNX\ComposerPackageVersion\PackageVersion;
+use Version\Exception\InvalidVersionString;
+use Version\Version;
+
+class PackageVersionSemver
+{
+    private string $pathToComposerJson;
+
+    private ?Version $version = null;
+
+    private static ?PackageVersionSemver $instance = null;
+
+    private function __construct(string $pathToComposerJson)
+    {
+        $this->pathToComposerJson = $pathToComposerJson;
+    }
+
+    private function __clone()
+    {
+    }
+
+    public static function init(string $pathToComposerJson): PackageVersionSemver
+    {
+        if (self::$instance === null || self::$instance->pathToComposerJson !== $pathToComposerJson) {
+            self::$instance = new self($pathToComposerJson);
+        }
+
+        return self::$instance;
+    }
+
+    /**
+     * @throws InvalidVersionString
+     */
+    public function getVersion(): ?Version
+    {
+        if (null === $this->version) {
+            $version = PackageVersion::init($this->pathToComposerJson)->getVersion();
+            $this->version = Version::fromString($version);
+        }
+
+        return $this->version;
+    }
+
+    public function getVersionAsString(): string
+    {
+        return PackageVersion::init($this->pathToComposerJson)->getVersion();
+    }
+}

tests/PackageVersionSemverTest.php

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+<?php
+
+declare(strict_types=1);
+
+namespace MZNX\ComposerPackageSemver\Tests;
+
+use InvalidArgumentException;
+use MZNX\ComposerPackageSemver\PackageVersionSemver;
+use PHPUnit\Framework\TestCase;
+use Version\Exception\InvalidVersionString;
+
+class PackageVersionSemverTest extends TestCase
+{
+    public function test_broken_json(): void
+    {
+        $sut = PackageVersionSemver::init(__DIR__ . '/fixtures/broken_json_file.json');
+
+        $this->expectException(InvalidArgumentException::class);
+        $sut->getVersion();
+    }
+
+    public function test_get_version_with_invalid_file_path(): void
+    {
+        $sut = PackageVersionSemver::init(__DIR__ . '/non-existing/composer/json/path');
+
+        $this->expectException(InvalidArgumentException::class);
+        $sut->getVersion();
+    }
+
+    public function test_get_version_as_string(): void
+    {
+        $sut = PackageVersionSemver::init(__DIR__ . '/fixtures/without_version.json');
+
+        self::assertEquals('dev-master', $sut->getVersionAsString());
+    }
+
+    public function test_get_version_with_default_value(): void
+    {
+        $sut = PackageVersionSemver::init(__DIR__ . '/fixtures/without_version.json');
+
+        $this->expectException(InvalidVersionString::class);
+        $sut->getVersion();
+    }
+
+    public function test_get_version(): void
+    {
+        $sut = PackageVersionSemver::init(__DIR__ . '/fixtures/with_version.json');
+
+        $version = $sut->getVersion();
+        self::assertEquals(1, $version->getMajor());
+        self::assertEquals(2, $version->getMinor());
+        self::assertEquals(3, $version->getPatch());
+    }
+}

tests/fixtures/broken_json_file.json

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+{
+  "name": "test/package",
+  "description": "Broken json file with specified version",
+  "version": "1.2.3",
+}

tests/fixtures/with_version.json

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+{
+  "name": "test/package",
+  "description": "Package with specified version",
+  "version": "1.2.3"
+}

tests/fixtures/without_version.json

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+{
+  "name": "test/package",
+  "description": "Package without specified version"
+}