diff --git a/.gitignore b/.gitignore
index 803c8b5b..fb14c34a 100644
--- a/.gitignore
+++ b/.gitignore
@@ -3,5 +3,5 @@
 .idea/*
 .env
 .phpunit.result.cache
-composer.lock
+/composer.lock
 .php_cs.cache
diff --git a/composer.json b/composer.json
index 84ca27a4..98f32fe2 100644
--- a/composer.json
+++ b/composer.json
@@ -11,8 +11,9 @@
     ],
     "require": {
         "php": "^7.2",
-        "ext-json": "*",
         "ext-iconv": "*",
+        "ext-json": "*",
+        "composer/composer": "^1.7",
         "league/container": "^3.2",
         "object-calisthenics/phpcs-calisthenics-rules": "^3.5",
         "phploc/phploc": "^5.0",
diff --git a/src/Domain/Insights/ComposerFinder.php b/src/Domain/ComposerFinder.php
similarity index 69%
rename from src/Domain/Insights/ComposerFinder.php
rename to src/Domain/ComposerFinder.php
index ecb97485..51cd8750 100644
--- a/src/Domain/Insights/ComposerFinder.php
+++ b/src/Domain/ComposerFinder.php
@@ -2,9 +2,8 @@
 
 declare(strict_types=1);
 
-namespace NunoMaduro\PhpInsights\Domain\Insights;
+namespace NunoMaduro\PhpInsights\Domain;
 
-use NunoMaduro\PhpInsights\Domain\Collector;
 use NunoMaduro\PhpInsights\Domain\Exceptions\ComposerNotFound;
 
 final class ComposerFinder
@@ -15,11 +14,16 @@ final class ComposerFinder
      * @return string
      */
     public static function contents(Collector $collector): string
+    {
+        return (string) file_get_contents(self::getPath($collector));
+    }
+
+    public static function getPath(Collector $collector): string
     {
         $filePath = $collector->getDir() . '/composer.json';
 
         if (file_exists($filePath)) {
-            return (string) file_get_contents($filePath);
+            return $filePath;
         }
 
         throw new ComposerNotFound('`composer.json` not found.');
diff --git a/src/Domain/ComposerLoader.php b/src/Domain/ComposerLoader.php
new file mode 100644
index 00000000..3a49a3c8
--- /dev/null
+++ b/src/Domain/ComposerLoader.php
@@ -0,0 +1,21 @@
+<?php
+
+declare(strict_types=1);
+
+namespace NunoMaduro\PhpInsights\Domain;
+
+use Composer\Composer;
+use Composer\Factory;
+use Composer\IO\NullIO;
+
+/**
+ * @internal
+ */
+final class ComposerLoader
+{
+    public static function getInstance(Collector $collector): Composer
+    {
+        $io = new NullIO();
+        return Factory::create($io, ComposerFinder::getPath($collector));
+    }
+}
diff --git a/src/Domain/Insights/Composer/ComposerLockMustBeFresh.php b/src/Domain/Insights/Composer/ComposerLockMustBeFresh.php
new file mode 100644
index 00000000..feabffd6
--- /dev/null
+++ b/src/Domain/Insights/Composer/ComposerLockMustBeFresh.php
@@ -0,0 +1,34 @@
+<?php
+
+declare(strict_types=1);
+
+namespace NunoMaduro\PhpInsights\Domain\Insights\Composer;
+
+use NunoMaduro\PhpInsights\Domain\ComposerLoader;
+use NunoMaduro\PhpInsights\Domain\Contracts\HasDetails;
+use NunoMaduro\PhpInsights\Domain\Exceptions\ComposerNotFound;
+use NunoMaduro\PhpInsights\Domain\Insights\Insight;
+
+final class ComposerLockMustBeFresh extends Insight implements HasDetails
+{
+    public function hasIssue(): bool
+    {
+        try {
+            $composer = ComposerLoader::getInstance($this->collector);
+
+            return ! $composer->getLocker()->isFresh();
+        } catch (ComposerNotFound $exception) {
+            return true;
+        }
+    }
+
+    public function getTitle(): string
+    {
+        return 'The lock file is not up to date with the latest changes in composer.json';
+    }
+
+    public function getDetails(): array
+    {
+        return ['You may be getting outdated dependencies. Run update to update them.'];
+    }
+}
diff --git a/src/Domain/Insights/Composer/ComposerMustBeValid.php b/src/Domain/Insights/Composer/ComposerMustBeValid.php
new file mode 100644
index 00000000..7cb7008a
--- /dev/null
+++ b/src/Domain/Insights/Composer/ComposerMustBeValid.php
@@ -0,0 +1,54 @@
+<?php
+
+declare(strict_types=1);
+
+namespace NunoMaduro\PhpInsights\Domain\Insights\Composer;
+
+use Composer\IO\NullIO;
+use Composer\Util\ConfigValidator;
+use NunoMaduro\PhpInsights\Domain\ComposerFinder;
+use NunoMaduro\PhpInsights\Domain\Contracts\HasDetails;
+use NunoMaduro\PhpInsights\Domain\Insights\Insight;
+
+final class ComposerMustBeValid extends Insight implements HasDetails
+{
+    /**
+     * @var array<string>
+     */
+    private $errors;
+    /**
+     * @var array<string>
+     */
+    private $publishErrors;
+    /**
+     * @var array<string>
+     */
+    private $warnings;
+
+    public function hasIssue(): bool
+    {
+        $validator = new ConfigValidator(new NullIO());
+        [$this->errors, $this->publishErrors, $this->warnings] = $validator->validate(ComposerFinder::getPath($this->collector));
+
+        return \count(\array_merge($this->errors, $this->publishErrors, $this->warnings)) > 0;
+    }
+
+    public function getTitle(): string
+    {
+        return 'Composer.json is not valid';
+    }
+
+    public function getDetails(): array
+    {
+        $details = [];
+
+        foreach (array_merge($this->errors, $this->publishErrors, $this->warnings) as $issue) {
+            if (strpos($issue, ' : ') !== false) {
+                $issue = explode(' : ', $issue)[1];
+            }
+            $details[] = 'composer.json: ' . $issue;
+        }
+
+        return $details;
+    }
+}
diff --git a/src/Domain/Insights/ComposerMustContainName.php b/src/Domain/Insights/Composer/ComposerMustContainName.php
similarity index 82%
rename from src/Domain/Insights/ComposerMustContainName.php
rename to src/Domain/Insights/Composer/ComposerMustContainName.php
index ce5d0ac1..84b3bef2 100644
--- a/src/Domain/Insights/ComposerMustContainName.php
+++ b/src/Domain/Insights/Composer/ComposerMustContainName.php
@@ -2,9 +2,11 @@
 
 declare(strict_types=1);
 
-namespace NunoMaduro\PhpInsights\Domain\Insights;
+namespace NunoMaduro\PhpInsights\Domain\Insights\Composer;
 
+use NunoMaduro\PhpInsights\Domain\ComposerFinder;
 use NunoMaduro\PhpInsights\Domain\Exceptions\ComposerNotFound;
+use NunoMaduro\PhpInsights\Domain\Insights\Insight;
 
 final class ComposerMustContainName extends Insight
 {
diff --git a/src/Domain/Insights/ComposerMustExist.php b/src/Domain/Insights/Composer/ComposerMustExist.php
similarity index 74%
rename from src/Domain/Insights/ComposerMustExist.php
rename to src/Domain/Insights/Composer/ComposerMustExist.php
index 1873a915..0d53e610 100644
--- a/src/Domain/Insights/ComposerMustExist.php
+++ b/src/Domain/Insights/Composer/ComposerMustExist.php
@@ -2,9 +2,11 @@
 
 declare(strict_types=1);
 
-namespace NunoMaduro\PhpInsights\Domain\Insights;
+namespace NunoMaduro\PhpInsights\Domain\Insights\Composer;
 
+use NunoMaduro\PhpInsights\Domain\ComposerFinder;
 use NunoMaduro\PhpInsights\Domain\Exceptions\ComposerNotFound;
+use NunoMaduro\PhpInsights\Domain\Insights\Insight;
 
 final class ComposerMustExist extends Insight
 {
diff --git a/src/Domain/Insights/Laravel/ComposerCheckLaravelVersion.php b/src/Domain/Insights/Laravel/ComposerCheckLaravelVersion.php
index 132cc2c2..49d83cb9 100644
--- a/src/Domain/Insights/Laravel/ComposerCheckLaravelVersion.php
+++ b/src/Domain/Insights/Laravel/ComposerCheckLaravelVersion.php
@@ -4,8 +4,8 @@
 
 namespace NunoMaduro\PhpInsights\Domain\Insights\Laravel;
 
+use NunoMaduro\PhpInsights\Domain\ComposerFinder;
 use NunoMaduro\PhpInsights\Domain\Exceptions\ComposerNotFound;
-use NunoMaduro\PhpInsights\Domain\Insights\ComposerFinder;
 use NunoMaduro\PhpInsights\Domain\Insights\Insight;
 
 final class ComposerCheckLaravelVersion extends Insight
diff --git a/src/Domain/Metrics/Architecture/Composer.php b/src/Domain/Metrics/Architecture/Composer.php
index 136de5dd..63b41729 100644
--- a/src/Domain/Metrics/Architecture/Composer.php
+++ b/src/Domain/Metrics/Architecture/Composer.php
@@ -5,8 +5,10 @@
 namespace NunoMaduro\PhpInsights\Domain\Metrics\Architecture;
 
 use NunoMaduro\PhpInsights\Domain\Contracts\HasInsights;
-use NunoMaduro\PhpInsights\Domain\Insights\ComposerMustContainName;
-use NunoMaduro\PhpInsights\Domain\Insights\ComposerMustExist;
+use NunoMaduro\PhpInsights\Domain\Insights\Composer\ComposerLockMustBeFresh;
+use NunoMaduro\PhpInsights\Domain\Insights\Composer\ComposerMustBeValid;
+use NunoMaduro\PhpInsights\Domain\Insights\Composer\ComposerMustContainName;
+use NunoMaduro\PhpInsights\Domain\Insights\Composer\ComposerMustExist;
 
 final class Composer implements HasInsights
 {
@@ -18,6 +20,8 @@ public function getInsights(): array
         return [
             ComposerMustExist::class,
             ComposerMustContainName::class,
+            ComposerMustBeValid::class,
+            ComposerLockMustBeFresh::class,
         ];
     }
 }
diff --git a/tests/Domain/ComposerFinderTest.php b/tests/Domain/ComposerFinderTest.php
new file mode 100644
index 00000000..a898605a
--- /dev/null
+++ b/tests/Domain/ComposerFinderTest.php
@@ -0,0 +1,32 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Tests\Domain;
+
+use NunoMaduro\PhpInsights\Domain\Collector;
+use NunoMaduro\PhpInsights\Domain\ComposerFinder;
+use NunoMaduro\PhpInsights\Domain\Exceptions\ComposerNotFound;
+use PHPUnit\Framework\TestCase;
+
+final class ComposerFinderTest extends TestCase
+{
+    public function testGetComposerPath(): void
+    {
+        $collector = new Collector(__DIR__ . '/Insights/Composer/Fixtures/Valid');
+        $path = ComposerFinder::getPath($collector);
+
+        self::assertEquals(
+            __DIR__ . '/Insights/Composer/Fixtures/Valid/composer.json',
+            $path
+        );
+    }
+
+    public function testGetComposerPathThrowExceptionIfNoComposerJsonExist(): void
+    {
+        self::expectException(ComposerNotFound::class);
+
+        $collector = new Collector(__DIR__ . '/Insights/Composer/Fixtures');
+        ComposerFinder::getPath($collector);
+    }
+}
diff --git a/tests/Domain/ComposerLoaderTest.php b/tests/Domain/ComposerLoaderTest.php
new file mode 100644
index 00000000..0d11e8f9
--- /dev/null
+++ b/tests/Domain/ComposerLoaderTest.php
@@ -0,0 +1,30 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Tests\Domain;
+
+use Composer\Composer;
+use NunoMaduro\PhpInsights\Domain\Collector;
+use NunoMaduro\PhpInsights\Domain\ComposerLoader;
+use NunoMaduro\PhpInsights\Domain\Exceptions\ComposerNotFound;
+use PHPUnit\Framework\TestCase;
+
+final class ComposerLoaderTest extends TestCase
+{
+    public function testGetInstance(): void
+    {
+        $collector = new Collector(__DIR__ . '/Insights/Composer/Fixtures/Valid');
+        $composer = ComposerLoader::getInstance($collector);
+
+        self::assertEquals(Composer::class, get_class($composer));
+    }
+
+    public function testGetExceptionOnFolderWithoutComposerJson(): void
+    {
+        self::expectException(ComposerNotFound::class);
+
+        $collector = new Collector(__DIR__ . '/Insights/Composer/Fixtures');
+        ComposerLoader::getInstance($collector);
+    }
+}
diff --git a/tests/Domain/Insights/Composer/ComposerLockMustBeFreshTest.php b/tests/Domain/Insights/Composer/ComposerLockMustBeFreshTest.php
new file mode 100644
index 00000000..f4f83832
--- /dev/null
+++ b/tests/Domain/Insights/Composer/ComposerLockMustBeFreshTest.php
@@ -0,0 +1,28 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Tests\Domain\Insights\Composer;
+
+use NunoMaduro\PhpInsights\Domain\Collector;
+use NunoMaduro\PhpInsights\Domain\Insights\Composer\ComposerLockMustBeFresh;
+use PHPUnit\Framework\TestCase;
+
+final class ComposerLockMustBeFreshTest extends TestCase
+{
+    public function testHasIssueWhenComposerLockWasntUpdateFromComposerJson(): void
+    {
+        $collector = new Collector(__DIR__ . '/Fixtures/Unfresh');
+        $insight = new ComposerLockMustBeFresh($collector, []);
+
+        self::assertTrue($insight->hasIssue());
+    }
+
+    public function testHasNoIssueWhenComposerLockUpToDate(): void
+    {
+        $collector = new Collector(__DIR__ . '/Fixtures/Fresh');
+        $insight = new ComposerLockMustBeFresh($collector, []);
+
+        self::assertFalse($insight->hasIssue());
+    }
+}
diff --git a/tests/Domain/Insights/Composer/ComposerMustBeValidTest.php b/tests/Domain/Insights/Composer/ComposerMustBeValidTest.php
new file mode 100644
index 00000000..27f32f67
--- /dev/null
+++ b/tests/Domain/Insights/Composer/ComposerMustBeValidTest.php
@@ -0,0 +1,32 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Tests\Domain\Insights\Composer;
+
+use NunoMaduro\PhpInsights\Domain\Collector;
+use NunoMaduro\PhpInsights\Domain\Insights\Composer\ComposerMustBeValid;
+use PHPUnit\Framework\TestCase;
+
+final class ComposerMustBeValidTest extends TestCase
+{
+    public function testComposerIsNotValid(): void
+    {
+        $collector = new Collector(__DIR__ . '/Fixtures/Fresh');
+        $insight = new ComposerMustBeValid($collector, []);
+
+        self::assertTrue($insight->hasIssue());
+        self::assertIsArray($insight->getDetails());
+        self::assertContains('composer.json: The property name is required', $insight->getDetails());
+        self::assertContains('composer.json: The property description is required', $insight->getDetails());
+        self::assertContains('composer.json: No license specified, it is recommended to do so. For closed-source software you may use "proprietary" as license.', $insight->getDetails());
+    }
+
+    public function testComposerIsValid(): void
+    {
+        $collector = new Collector(__DIR__ . '/Fixtures/Valid');
+        $insight = new ComposerMustBeValid($collector, []);
+
+        self::assertFalse($insight->hasIssue());
+    }
+}
diff --git a/tests/Domain/Insights/Composer/Fixtures/Fresh/composer.json b/tests/Domain/Insights/Composer/Fixtures/Fresh/composer.json
new file mode 100644
index 00000000..1c275159
--- /dev/null
+++ b/tests/Domain/Insights/Composer/Fixtures/Fresh/composer.json
@@ -0,0 +1,5 @@
+{
+    "require": {
+        "symfony/var-dumper": "^4.3"
+    }
+}
diff --git a/tests/Domain/Insights/Composer/Fixtures/Fresh/composer.lock b/tests/Domain/Insights/Composer/Fixtures/Fresh/composer.lock
new file mode 100644
index 00000000..289f0382
--- /dev/null
+++ b/tests/Domain/Insights/Composer/Fixtures/Fresh/composer.lock
@@ -0,0 +1,208 @@
+{
+    "_readme": [
+        "This file locks the dependencies of your project to a known state",
+        "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#installing-dependencies",
+        "This file is @generated automatically"
+    ],
+    "content-hash": "7078e0184fb6a5ab492efd31a75f8f7d",
+    "packages": [
+        {
+            "name": "symfony/polyfill-mbstring",
+            "version": "v1.11.0",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/symfony/polyfill-mbstring.git",
+                "reference": "fe5e94c604826c35a32fa832f35bd036b6799609"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/symfony/polyfill-mbstring/zipball/fe5e94c604826c35a32fa832f35bd036b6799609",
+                "reference": "fe5e94c604826c35a32fa832f35bd036b6799609",
+                "shasum": ""
+            },
+            "require": {
+                "php": ">=5.3.3"
+            },
+            "suggest": {
+                "ext-mbstring": "For best performance"
+            },
+            "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-master": "1.11-dev"
+                }
+            },
+            "autoload": {
+                "psr-4": {
+                    "Symfony\\Polyfill\\Mbstring\\": ""
+                },
+                "files": [
+                    "bootstrap.php"
+                ]
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Nicolas Grekas",
+                    "email": "p@tchwork.com"
+                },
+                {
+                    "name": "Symfony Community",
+                    "homepage": "https://symfony.com/contributors"
+                }
+            ],
+            "description": "Symfony polyfill for the Mbstring extension",
+            "homepage": "https://symfony.com",
+            "keywords": [
+                "compatibility",
+                "mbstring",
+                "polyfill",
+                "portable",
+                "shim"
+            ],
+            "time": "2019-02-06T07:57:58+00:00"
+        },
+        {
+            "name": "symfony/polyfill-php72",
+            "version": "v1.11.0",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/symfony/polyfill-php72.git",
+                "reference": "ab50dcf166d5f577978419edd37aa2bb8eabce0c"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/symfony/polyfill-php72/zipball/ab50dcf166d5f577978419edd37aa2bb8eabce0c",
+                "reference": "ab50dcf166d5f577978419edd37aa2bb8eabce0c",
+                "shasum": ""
+            },
+            "require": {
+                "php": ">=5.3.3"
+            },
+            "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-master": "1.11-dev"
+                }
+            },
+            "autoload": {
+                "psr-4": {
+                    "Symfony\\Polyfill\\Php72\\": ""
+                },
+                "files": [
+                    "bootstrap.php"
+                ]
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Nicolas Grekas",
+                    "email": "p@tchwork.com"
+                },
+                {
+                    "name": "Symfony Community",
+                    "homepage": "https://symfony.com/contributors"
+                }
+            ],
+            "description": "Symfony polyfill backporting some PHP 7.2+ features to lower PHP versions",
+            "homepage": "https://symfony.com",
+            "keywords": [
+                "compatibility",
+                "polyfill",
+                "portable",
+                "shim"
+            ],
+            "time": "2019-02-06T07:57:58+00:00"
+        },
+        {
+            "name": "symfony/var-dumper",
+            "version": "v4.3.1",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/symfony/var-dumper.git",
+                "reference": "f974f448154928d2b5fb7c412bd23b81d063f34b"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/symfony/var-dumper/zipball/f974f448154928d2b5fb7c412bd23b81d063f34b",
+                "reference": "f974f448154928d2b5fb7c412bd23b81d063f34b",
+                "shasum": ""
+            },
+            "require": {
+                "php": "^7.1.3",
+                "symfony/polyfill-mbstring": "~1.0",
+                "symfony/polyfill-php72": "~1.5"
+            },
+            "conflict": {
+                "phpunit/phpunit": "<4.8.35|<5.4.3,>=5.0",
+                "symfony/console": "<3.4"
+            },
+            "require-dev": {
+                "ext-iconv": "*",
+                "symfony/console": "~3.4|~4.0",
+                "symfony/process": "~3.4|~4.0",
+                "twig/twig": "~1.34|~2.4"
+            },
+            "suggest": {
+                "ext-iconv": "To convert non-UTF-8 strings to UTF-8 (or symfony/polyfill-iconv in case ext-iconv cannot be used).",
+                "ext-intl": "To show region name in time zone dump",
+                "symfony/console": "To use the ServerDumpCommand and/or the bin/var-dump-server script"
+            },
+            "bin": [
+                "Resources/bin/var-dump-server"
+            ],
+            "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-master": "4.3-dev"
+                }
+            },
+            "autoload": {
+                "files": [
+                    "Resources/functions/dump.php"
+                ],
+                "psr-4": {
+                    "Symfony\\Component\\VarDumper\\": ""
+                },
+                "exclude-from-classmap": [
+                    "/Tests/"
+                ]
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Nicolas Grekas",
+                    "email": "p@tchwork.com"
+                },
+                {
+                    "name": "Symfony Community",
+                    "homepage": "https://symfony.com/contributors"
+                }
+            ],
+            "description": "Symfony mechanism for exploring and dumping PHP variables",
+            "homepage": "https://symfony.com",
+            "keywords": [
+                "debug",
+                "dump"
+            ],
+            "time": "2019-06-05T02:08:12+00:00"
+        }
+    ],
+    "packages-dev": [],
+    "aliases": [],
+    "minimum-stability": "stable",
+    "stability-flags": [],
+    "prefer-stable": false,
+    "prefer-lowest": false,
+    "platform": [],
+    "platform-dev": []
+}
diff --git a/tests/Domain/Insights/Composer/Fixtures/Unfresh/composer.json b/tests/Domain/Insights/Composer/Fixtures/Unfresh/composer.json
new file mode 100644
index 00000000..2130003a
--- /dev/null
+++ b/tests/Domain/Insights/Composer/Fixtures/Unfresh/composer.json
@@ -0,0 +1,5 @@
+{
+    "require": {
+        "symfony/var-dumper": "4.3.0"
+    }
+}
diff --git a/tests/Domain/Insights/Composer/Fixtures/Unfresh/composer.lock b/tests/Domain/Insights/Composer/Fixtures/Unfresh/composer.lock
new file mode 100644
index 00000000..d6954e34
--- /dev/null
+++ b/tests/Domain/Insights/Composer/Fixtures/Unfresh/composer.lock
@@ -0,0 +1,207 @@
+{
+    "_readme": [
+        "This file locks the dependencies of your project to a known state",
+        "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#installing-dependencies",
+        "This file is @generated automatically"
+    ],
+    "content-hash": "d3672d861c131e1b163e498afc1a528c",
+    "packages": [
+        {
+            "name": "symfony/polyfill-mbstring",
+            "version": "v1.11.0",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/symfony/polyfill-mbstring.git",
+                "reference": "fe5e94c604826c35a32fa832f35bd036b6799609"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/symfony/polyfill-mbstring/zipball/fe5e94c604826c35a32fa832f35bd036b6799609",
+                "reference": "fe5e94c604826c35a32fa832f35bd036b6799609",
+                "shasum": ""
+            },
+            "require": {
+                "php": ">=5.3.3"
+            },
+            "suggest": {
+                "ext-mbstring": "For best performance"
+            },
+            "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-master": "1.11-dev"
+                }
+            },
+            "autoload": {
+                "psr-4": {
+                    "Symfony\\Polyfill\\Mbstring\\": ""
+                },
+                "files": [
+                    "bootstrap.php"
+                ]
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Nicolas Grekas",
+                    "email": "p@tchwork.com"
+                },
+                {
+                    "name": "Symfony Community",
+                    "homepage": "https://symfony.com/contributors"
+                }
+            ],
+            "description": "Symfony polyfill for the Mbstring extension",
+            "homepage": "https://symfony.com",
+            "keywords": [
+                "compatibility",
+                "mbstring",
+                "polyfill",
+                "portable",
+                "shim"
+            ],
+            "time": "2019-02-06T07:57:58+00:00"
+        },
+        {
+            "name": "symfony/polyfill-php72",
+            "version": "v1.11.0",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/symfony/polyfill-php72.git",
+                "reference": "ab50dcf166d5f577978419edd37aa2bb8eabce0c"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/symfony/polyfill-php72/zipball/ab50dcf166d5f577978419edd37aa2bb8eabce0c",
+                "reference": "ab50dcf166d5f577978419edd37aa2bb8eabce0c",
+                "shasum": ""
+            },
+            "require": {
+                "php": ">=5.3.3"
+            },
+            "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-master": "1.11-dev"
+                }
+            },
+            "autoload": {
+                "psr-4": {
+                    "Symfony\\Polyfill\\Php72\\": ""
+                },
+                "files": [
+                    "bootstrap.php"
+                ]
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Nicolas Grekas",
+                    "email": "p@tchwork.com"
+                },
+                {
+                    "name": "Symfony Community",
+                    "homepage": "https://symfony.com/contributors"
+                }
+            ],
+            "description": "Symfony polyfill backporting some PHP 7.2+ features to lower PHP versions",
+            "homepage": "https://symfony.com",
+            "keywords": [
+                "compatibility",
+                "polyfill",
+                "portable",
+                "shim"
+            ],
+            "time": "2019-02-06T07:57:58+00:00"
+        },
+        {
+            "name": "symfony/var-dumper",
+            "version": "v4.1.0",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/symfony/var-dumper.git",
+                "reference": "bc88ad53e825ebacc7b190bbd360781fce381c64"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/symfony/var-dumper/zipball/bc88ad53e825ebacc7b190bbd360781fce381c64",
+                "reference": "bc88ad53e825ebacc7b190bbd360781fce381c64",
+                "shasum": ""
+            },
+            "require": {
+                "php": "^7.1.3",
+                "symfony/polyfill-mbstring": "~1.0",
+                "symfony/polyfill-php72": "~1.5"
+            },
+            "conflict": {
+                "phpunit/phpunit": "<4.8.35|<5.4.3,>=5.0",
+                "symfony/console": "<3.4"
+            },
+            "require-dev": {
+                "ext-iconv": "*",
+                "symfony/process": "~3.4|~4.0",
+                "twig/twig": "~1.34|~2.4"
+            },
+            "suggest": {
+                "ext-iconv": "To convert non-UTF-8 strings to UTF-8 (or symfony/polyfill-iconv in case ext-iconv cannot be used).",
+                "ext-intl": "To show region name in time zone dump",
+                "symfony/console": "To use the ServerDumpCommand and/or the bin/var-dump-server script"
+            },
+            "bin": [
+                "Resources/bin/var-dump-server"
+            ],
+            "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-master": "4.1-dev"
+                }
+            },
+            "autoload": {
+                "files": [
+                    "Resources/functions/dump.php"
+                ],
+                "psr-4": {
+                    "Symfony\\Component\\VarDumper\\": ""
+                },
+                "exclude-from-classmap": [
+                    "/Tests/"
+                ]
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Nicolas Grekas",
+                    "email": "p@tchwork.com"
+                },
+                {
+                    "name": "Symfony Community",
+                    "homepage": "https://symfony.com/contributors"
+                }
+            ],
+            "description": "Symfony mechanism for exploring and dumping PHP variables",
+            "homepage": "https://symfony.com",
+            "keywords": [
+                "debug",
+                "dump"
+            ],
+            "time": "2018-04-29T07:56:09+00:00"
+        }
+    ],
+    "packages-dev": [],
+    "aliases": [],
+    "minimum-stability": "stable",
+    "stability-flags": [],
+    "prefer-stable": false,
+    "prefer-lowest": false,
+    "platform": [],
+    "platform-dev": []
+}
diff --git a/tests/Domain/Insights/Composer/Fixtures/Valid/composer.json b/tests/Domain/Insights/Composer/Fixtures/Valid/composer.json
new file mode 100644
index 00000000..d485d771
--- /dev/null
+++ b/tests/Domain/Insights/Composer/Fixtures/Valid/composer.json
@@ -0,0 +1,7 @@
+{
+    "name": "dummy/foo-package",
+    "description": "Hey look at me",
+    "type": "project",
+    "license": "MIT",
+    "require": {}
+}