diff --git a/tests/Meritoo/Common/Test/Exception/Base/UnknownTypeExceptionTest.php b/tests/Meritoo/Common/Test/Exception/Base/UnknownTypeExceptionTest.php
index 815e0c6..a273299 100644
--- a/tests/Meritoo/Common/Test/Exception/Base/UnknownTypeExceptionTest.php
+++ b/tests/Meritoo/Common/Test/Exception/Base/UnknownTypeExceptionTest.php
@@ -9,8 +9,9 @@
 namespace Meritoo\Common\Test\Exception\Base;
 
 use Meritoo\Common\Exception\Base\UnknownTypeException;
+use Meritoo\Common\Test\Base\BaseTestCase;
 use Meritoo\Common\Type\Base\BaseType;
-use PHPUnit\Framework\TestCase;
+use Meritoo\Common\Type\OopVisibilityType;
 
 /**
  * Test case of the exception used while type of something is unknown
@@ -18,8 +19,13 @@ use PHPUnit\Framework\TestCase;
  * @author    Krzysztof Niziol <krzysztof.niziol@meritoo.pl>
  * @copyright Meritoo.pl
  */
-class UnknownTypeExceptionTest extends TestCase
+class UnknownTypeExceptionTest extends BaseTestCase
 {
+    public function testConstructorVisibilityAndArguments()
+    {
+        static::assertConstructorVisibilityAndArguments(UnknownTestTypeException::class, OopVisibilityType::IS_PUBLIC, 1, 1);
+    }
+
     public function testWithoutException()
     {
         self::assertEquals('Test 2', (new TestService())->getTranslatedType('test_2'));
diff --git a/tests/Meritoo/Common/Test/Exception/Date/UnknownDatePartTypeExceptionTest.php b/tests/Meritoo/Common/Test/Exception/Date/UnknownDatePartTypeExceptionTest.php
new file mode 100644
index 0000000..a318406
--- /dev/null
+++ b/tests/Meritoo/Common/Test/Exception/Date/UnknownDatePartTypeExceptionTest.php
@@ -0,0 +1,71 @@
+<?php
+
+/**
+ * (c) Meritoo.pl, http://www.meritoo.pl
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Meritoo\Common\Test\Exception\Date;
+
+use Generator;
+use Meritoo\Common\Exception\Date\UnknownDatePartTypeException;
+use Meritoo\Common\Test\Base\BaseTestCase;
+use Meritoo\Common\Type\DatePartType;
+use Meritoo\Common\Type\OopVisibilityType;
+
+/**
+ * Test case of an exception used while type of date part, e.g. "year", is unknown
+ *
+ * @author    Krzysztof Niziol <krzysztof.niziol@meritoo.pl>
+ * @copyright Meritoo.pl
+ */
+class UnknownDatePartTypeExceptionTest extends BaseTestCase
+{
+    public function testConstructorVisibilityAndArguments()
+    {
+        static::assertConstructorVisibilityAndArguments(UnknownDatePartTypeException::class, OopVisibilityType::IS_PUBLIC, 2, 2);
+    }
+
+    /**
+     * @param string $unknownDatePart Type of date part, e.g. "year". One of DatePartType class constants.
+     * @param string $value           Incorrect value
+     * @param string $expectedMessage Expected exception's message
+     *
+     * @dataProvider provideDatePartAndValue
+     */
+    public function testConstructorMessage($unknownDatePart, $value, $expectedMessage)
+    {
+        $exception = new UnknownDatePartTypeException($unknownDatePart, $value);
+        static::assertEquals($expectedMessage, $exception->getMessage());
+    }
+
+    /**
+     * Provides type of date part, incorrect value and expected exception's message
+     *
+     * @return Generator
+     */
+    public function provideDatePartAndValue()
+    {
+        $template = 'The \'%s\' type of date part (with value %s) is unknown. Probably doesn\'t exist or there is a'
+            . ' typo. You should use one of these types: day, hour, minute, month, second, year.';
+
+        yield[
+            DatePartType::DAY,
+            '44',
+            sprintf($template, DatePartType::DAY, '44'),
+        ];
+
+        yield[
+            DatePartType::MONTH,
+            '22',
+            sprintf($template, DatePartType::MONTH, '22'),
+        ];
+
+        yield[
+            DatePartType::MINUTE,
+            '77',
+            sprintf($template, DatePartType::MINUTE, '77'),
+        ];
+    }
+}
diff --git a/tests/Meritoo/Common/Test/Exception/File/EmptyFileExceptionTest.php b/tests/Meritoo/Common/Test/Exception/File/EmptyFileExceptionTest.php
new file mode 100644
index 0000000..506592e
--- /dev/null
+++ b/tests/Meritoo/Common/Test/Exception/File/EmptyFileExceptionTest.php
@@ -0,0 +1,60 @@
+<?php
+
+/**
+ * (c) Meritoo.pl, http://www.meritoo.pl
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Meritoo\Common\Test\Exception\File;
+
+use Generator;
+use Meritoo\Common\Exception\File\EmptyFileException;
+use Meritoo\Common\Test\Base\BaseTestCase;
+use Meritoo\Common\Type\OopVisibilityType;
+
+/**
+ * Test case of an exception used while file with given path is empty (has no content)
+ *
+ * @author    Krzysztof Niziol <krzysztof.niziol@meritoo.pl>
+ * @copyright Meritoo.pl
+ */
+class EmptyFileExceptionTest extends BaseTestCase
+{
+    public function testConstructorVisibilityAndArguments()
+    {
+        static::assertConstructorVisibilityAndArguments(EmptyFileException::class, OopVisibilityType::IS_PUBLIC, 1, 1);
+    }
+
+    /**
+     * @param string $emptyFilePath   Path of the empty file
+     * @param string $expectedMessage Expected exception's message
+     *
+     * @dataProvider providePathOfFile
+     */
+    public function testConstructorMessage($emptyFilePath, $expectedMessage)
+    {
+        $exception = new EmptyFileException($emptyFilePath);
+        static::assertEquals($expectedMessage, $exception->getMessage());
+    }
+
+    /**
+     * Provides path of the empty file and expected exception's message
+     *
+     * @return Generator
+     */
+    public function providePathOfFile()
+    {
+        $template = 'File with path \'%s\' is empty (has no content). Did you provide path of proper file?';
+
+        yield[
+            'aa/bb/cc',
+            sprintf($template, 'aa/bb/cc'),
+        ];
+
+        yield[
+            'images/show/car.jpg',
+            sprintf($template, 'images/show/car.jpg'),
+        ];
+    }
+}
diff --git a/tests/Meritoo/Common/Test/Exception/File/EmptyFilePathExceptionTest.php b/tests/Meritoo/Common/Test/Exception/File/EmptyFilePathExceptionTest.php
new file mode 100644
index 0000000..084831b
--- /dev/null
+++ b/tests/Meritoo/Common/Test/Exception/File/EmptyFilePathExceptionTest.php
@@ -0,0 +1,33 @@
+<?php
+
+/**
+ * (c) Meritoo.pl, http://www.meritoo.pl
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Meritoo\Common\Test\Exception\File;
+
+use Meritoo\Common\Exception\File\EmptyFilePathException;
+use Meritoo\Common\Test\Base\BaseTestCase;
+use Meritoo\Common\Type\OopVisibilityType;
+
+/**
+ * Test case of an exception used while path of given file is empty
+ *
+ * @author    Krzysztof Niziol <krzysztof.niziol@meritoo.pl>
+ * @copyright Meritoo.pl
+ */
+class EmptyFilePathExceptionTest extends BaseTestCase
+{
+    public function testConstructorVisibilityAndArguments()
+    {
+        static::assertConstructorVisibilityAndArguments(EmptyFilePathException::class, OopVisibilityType::IS_PUBLIC);
+    }
+
+    public function testConstructorMessage()
+    {
+        $exception = new EmptyFilePathException();
+        static::assertEquals('Path of the file is empty. Did you provide path of proper file?', $exception->getMessage());
+    }
+}
diff --git a/tests/Meritoo/Common/Test/Exception/File/NotExistingFileExceptionTest.php b/tests/Meritoo/Common/Test/Exception/File/NotExistingFileExceptionTest.php
new file mode 100644
index 0000000..3361395
--- /dev/null
+++ b/tests/Meritoo/Common/Test/Exception/File/NotExistingFileExceptionTest.php
@@ -0,0 +1,60 @@
+<?php
+
+/**
+ * (c) Meritoo.pl, http://www.meritoo.pl
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Meritoo\Common\Test\Exception\File;
+
+use Generator;
+use Meritoo\Common\Exception\File\NotExistingFileException;
+use Meritoo\Common\Test\Base\BaseTestCase;
+use Meritoo\Common\Type\OopVisibilityType;
+
+/**
+ * Test case of an exception used while file with given path does not exist
+ *
+ * @author    Krzysztof Niziol <krzysztof.niziol@meritoo.pl>
+ * @copyright Meritoo.pl
+ */
+class NotExistingFileExceptionTest extends BaseTestCase
+{
+    public function testConstructorVisibilityAndArguments()
+    {
+        static::assertConstructorVisibilityAndArguments(NotExistingFileException::class, OopVisibilityType::IS_PUBLIC, 1, 1);
+    }
+
+    /**
+     * @param string $notExistingFilePath Path of not existing (or not readable) file
+     * @param string $expectedMessage     Expected exception's message
+     *
+     * @dataProvider providePathOfFile
+     */
+    public function testConstructorMessage($notExistingFilePath, $expectedMessage)
+    {
+        $exception = new NotExistingFileException($notExistingFilePath);
+        static::assertEquals($expectedMessage, $exception->getMessage());
+    }
+
+    /**
+     * Provides path of not existing file and expected exception's message
+     *
+     * @return Generator
+     */
+    public function providePathOfFile()
+    {
+        $template = 'File with path \'%s\' does not exist (or is not readable). Did you provide path of proper file?';
+
+        yield[
+            'aa/bb/cc',
+            sprintf($template, 'aa/bb/cc'),
+        ];
+
+        yield[
+            'images/show/car.jpg',
+            sprintf($template, 'images/show/car.jpg'),
+        ];
+    }
+}
diff --git a/tests/Meritoo/Common/Test/Exception/Reflection/CannotResolveClassNameExceptionTest.php b/tests/Meritoo/Common/Test/Exception/Reflection/CannotResolveClassNameExceptionTest.php
new file mode 100644
index 0000000..c0e2629
--- /dev/null
+++ b/tests/Meritoo/Common/Test/Exception/Reflection/CannotResolveClassNameExceptionTest.php
@@ -0,0 +1,73 @@
+<?php
+
+/**
+ * (c) Meritoo.pl, http://www.meritoo.pl
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Meritoo\Common\Test\Exception\Reflection;
+
+use Generator;
+use Meritoo\Common\Exception\Reflection\CannotResolveClassNameException;
+use Meritoo\Common\Test\Base\BaseTestCase;
+use Meritoo\Common\Type\OopVisibilityType;
+
+/**
+ * Test case of an exception used while name of class or trait cannot be resolved
+ *
+ * @author    Krzysztof Niziol <krzysztof.niziol@meritoo.pl>
+ * @copyright Meritoo.pl
+ */
+class CannotResolveClassNameExceptionTest extends BaseTestCase
+{
+    public function testConstructorVisibilityAndArguments()
+    {
+        static::assertConstructorVisibilityAndArguments(CannotResolveClassNameException::class, OopVisibilityType::IS_PUBLIC, 2, 1);
+    }
+
+    /**
+     * @param array|object|string $source          Source of the class's / trait's name. It can be an array of objects,
+     *                                             namespaces, object or namespace.
+     * @param bool                $forClass        If is set to true, message of this exception for class is prepared.
+     *                                             Otherwise - for trait.
+     * @param string              $expectedMessage Expected exception's message
+     *
+     * @dataProvider provideClassName
+     */
+    public function testConstructorMessage($source, $forClass, $expectedMessage)
+    {
+        $exception = new CannotResolveClassNameException($source, $forClass);
+        static::assertEquals($expectedMessage, $exception->getMessage());
+    }
+
+    /**
+     * Provides source of the class's / trait's name, information if message of this exception should be prepared for
+     * class and the expected exception's message
+     *
+     * @return Generator
+     */
+    public function provideClassName()
+    {
+        yield[
+            'Not\Existing\Class',
+            true,
+            'Name of class from given \'string\' Not\Existing\Class cannot be resolved. Is there everything ok?',
+        ];
+
+        yield[
+            'Not\Existing\Trait',
+            false,
+            'Name of trait from given \'string\' Not\Existing\Trait cannot be resolved. Is there everything ok?',
+        ];
+
+        yield[
+            [
+                new \stdClass(),
+                new \stdClass(),
+            ],
+            true,
+            'Name of class from given \'array\' cannot be resolved. Is there everything ok?',
+        ];
+    }
+}
diff --git a/tests/Meritoo/Common/Test/Exception/Reflection/MissingChildClassesExceptionTest.php b/tests/Meritoo/Common/Test/Exception/Reflection/MissingChildClassesExceptionTest.php
new file mode 100644
index 0000000..dfff334
--- /dev/null
+++ b/tests/Meritoo/Common/Test/Exception/Reflection/MissingChildClassesExceptionTest.php
@@ -0,0 +1,65 @@
+<?php
+
+/**
+ * (c) Meritoo.pl, http://www.meritoo.pl
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Meritoo\Common\Test\Exception\Reflection;
+
+use Generator;
+use Meritoo\Common\Exception\Reflection\MissingChildClassesException;
+use Meritoo\Common\Test\Base\BaseTestCase;
+use Meritoo\Common\Type\OopVisibilityType;
+
+/**
+ * Test case of an exception used while given class has no child classes
+ *
+ * @author    Krzysztof Niziol <krzysztof.niziol@meritoo.pl>
+ * @copyright Meritoo.pl
+ */
+class MissingChildClassesExceptionTest extends BaseTestCase
+{
+    public function testConstructorVisibilityAndArguments()
+    {
+        static::assertConstructorVisibilityAndArguments(MissingChildClassesException::class, OopVisibilityType::IS_PUBLIC, 1, 1);
+    }
+
+    /**
+     * @param array|object|string $parentClass     Class that hasn't child classes, but it should. An array of objects,
+     *                                             strings, object or string.
+     * @param string              $expectedMessage Expected exception's message
+     *
+     * @dataProvider provideParentClass
+     */
+    public function testConstructorMessage($parentClass, $expectedMessage)
+    {
+        $exception = new MissingChildClassesException($parentClass);
+        static::assertEquals($expectedMessage, $exception->getMessage());
+    }
+
+    /**
+     * Provides name of class that hasn't child classes, but it should, and expected exception's message
+     *
+     * @return Generator
+     */
+    public function provideParentClass()
+    {
+        $template = 'The \'%s\' class requires one child class at least who will extend her (maybe is an abstract'
+            . ' class), but the child classes are missing. Did you forget to extend this class?';
+
+        yield[
+            MissingChildClassesException::class,
+            sprintf($template, MissingChildClassesException::class),
+        ];
+
+        yield[
+            [
+                new \stdClass(),
+                new \stdClass(),
+            ],
+            sprintf($template, \stdClass::class),
+        ];
+    }
+}
diff --git a/tests/Meritoo/Common/Test/Exception/Reflection/TooManyChildClassesExceptionTest.php b/tests/Meritoo/Common/Test/Exception/Reflection/TooManyChildClassesExceptionTest.php
new file mode 100644
index 0000000..4514657
--- /dev/null
+++ b/tests/Meritoo/Common/Test/Exception/Reflection/TooManyChildClassesExceptionTest.php
@@ -0,0 +1,74 @@
+<?php
+
+/**
+ * (c) Meritoo.pl, http://www.meritoo.pl
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Meritoo\Common\Test\Exception\Reflection;
+
+use Generator;
+use Meritoo\Common\Exception\Reflection\TooManyChildClassesException;
+use Meritoo\Common\Test\Base\BaseTestCase;
+use Meritoo\Common\Type\OopVisibilityType;
+
+/**
+ * Test case of an exception used while given class has more than one child class
+ *
+ * @author    Krzysztof Niziol <krzysztof.niziol@meritoo.pl>
+ * @copyright Meritoo.pl
+ */
+class TooManyChildClassesExceptionTest extends BaseTestCase
+{
+    public function testConstructorVisibilityAndArguments()
+    {
+        static::assertConstructorVisibilityAndArguments(TooManyChildClassesException::class, OopVisibilityType::IS_PUBLIC, 2, 2);
+    }
+
+    /**
+     * @param array|object|string $parentClass Class that has more than one child class, but it shouldn't. An array
+     *                                             of objects, strings, object or string.
+     * @param array               $childClasses Child classes
+     * @param string              $expectedMessage Expected exception's message
+     *
+     * @dataProvider provideParentAndChildClasses
+     */
+    public function testConstructorMessage($parentClass, array $childClasses, $expectedMessage)
+    {
+        $exception = new TooManyChildClassesException($parentClass, $childClasses);
+        static::assertEquals($expectedMessage, $exception->getMessage());
+    }
+
+    /**
+     * Provides name of class that has more than one child class, but it shouldn't, child classes, and expected
+     * exception's message
+     *
+     * @return Generator
+     */
+    public function provideParentAndChildClasses()
+    {
+        $template = "The '%s' class requires one child class at most who will extend her, but more than one child"
+            . " class was found:\n- %s\n\nWhy did you create more than one classes that extend '%s' class?";
+
+        yield[
+            BaseTestCase::class,
+            [
+                \stdClass::class,
+                OopVisibilityType::class,
+            ],
+            sprintf($template, BaseTestCase::class, implode("\n- ", [
+                \stdClass::class,
+                OopVisibilityType::class,
+            ]), BaseTestCase::class),
+        ];
+
+        yield[
+            TooManyChildClassesException::class,
+            [
+                \stdClass::class,
+            ],
+            sprintf($template, TooManyChildClassesException::class, implode("\n- ", [\stdClass::class]), TooManyChildClassesException::class),
+        ];
+    }
+}
diff --git a/tests/Meritoo/Common/Test/Exception/Regex/IncorrectColorHexLengthExceptionTest.php b/tests/Meritoo/Common/Test/Exception/Regex/IncorrectColorHexLengthExceptionTest.php
new file mode 100644
index 0000000..9cbd34f
--- /dev/null
+++ b/tests/Meritoo/Common/Test/Exception/Regex/IncorrectColorHexLengthExceptionTest.php
@@ -0,0 +1,60 @@
+<?php
+
+/**
+ * (c) Meritoo.pl, http://www.meritoo.pl
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Meritoo\Common\Test\Exception\Regex;
+
+use Generator;
+use Meritoo\Common\Exception\Regex\IncorrectColorHexLengthException;
+use Meritoo\Common\Test\Base\BaseTestCase;
+use Meritoo\Common\Type\OopVisibilityType;
+
+/**
+ * Test case of an exception used while length of given hexadecimal value of color is incorrect
+ *
+ * @author    Krzysztof Niziol <krzysztof.niziol@meritoo.pl>
+ * @copyright Meritoo.pl
+ */
+class IncorrectColorHexLengthExceptionTest extends BaseTestCase
+{
+    public function testConstructorVisibilityAndArguments()
+    {
+        static::assertConstructorVisibilityAndArguments(IncorrectColorHexLengthException::class, OopVisibilityType::IS_PUBLIC, 1, 1);
+    }
+
+    /**
+     * @param string $color           Incorrect hexadecimal value of color
+     * @param string $expectedMessage Expected exception's message
+     *
+     * @dataProvider provideColor
+     */
+    public function testConstructorMessage($color, $expectedMessage)
+    {
+        $exception = new IncorrectColorHexLengthException($color);
+        static::assertEquals($expectedMessage, $exception->getMessage());
+    }
+
+    /**
+     * Provides incorrect hexadecimal value of color and expected exception's message
+     *
+     * @return Generator
+     */
+    public function provideColor()
+    {
+        $template = 'Length of hexadecimal value of color \'%s\' is incorrect. It\'s %d, but it should be 3 or 6. Is there everything ok?';
+
+        yield[
+            '',
+            sprintf($template, '', strlen('')),
+        ];
+
+        yield[
+            'aa-bb-cc',
+            sprintf($template, 'aa-bb-cc', strlen('aa-bb-cc')),
+        ];
+    }
+}
diff --git a/tests/Meritoo/Common/Test/Exception/Regex/InvalidColorHexValueExceptionTest.php b/tests/Meritoo/Common/Test/Exception/Regex/InvalidColorHexValueExceptionTest.php
new file mode 100644
index 0000000..7376676
--- /dev/null
+++ b/tests/Meritoo/Common/Test/Exception/Regex/InvalidColorHexValueExceptionTest.php
@@ -0,0 +1,60 @@
+<?php
+
+/**
+ * (c) Meritoo.pl, http://www.meritoo.pl
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Meritoo\Common\Test\Exception\Regex;
+
+use Generator;
+use Meritoo\Common\Exception\Regex\InvalidColorHexValueException;
+use Meritoo\Common\Test\Base\BaseTestCase;
+use Meritoo\Common\Type\OopVisibilityType;
+
+/**
+ * Test case of an exception used while given hexadecimal value of color is invalid
+ *
+ * @author    Krzysztof Niziol <krzysztof.niziol@meritoo.pl>
+ * @copyright Meritoo.pl
+ */
+class InvalidColorHexValueExceptionTest extends BaseTestCase
+{
+    public function testConstructorVisibilityAndArguments()
+    {
+        static::assertConstructorVisibilityAndArguments(InvalidColorHexValueException::class, OopVisibilityType::IS_PUBLIC, 1, 1);
+    }
+
+    /**
+     * @param string $color           Invalid hexadecimal value of color
+     * @param string $expectedMessage Expected exception's message
+     *
+     * @dataProvider provideColor
+     */
+    public function testConstructorMessage($color, $expectedMessage)
+    {
+        $exception = new InvalidColorHexValueException($color);
+        static::assertEquals($expectedMessage, $exception->getMessage());
+    }
+
+    /**
+     * Provides invalid hexadecimal value of color and expected exception's message
+     *
+     * @return Generator
+     */
+    public function provideColor()
+    {
+        $template = 'Hexadecimal value of color \'%s\' is invalid. Is there everything ok?';
+
+        yield[
+            '',
+            sprintf($template, ''),
+        ];
+
+        yield[
+            'aa-bb-cc',
+            sprintf($template, 'aa-bb-cc'),
+        ];
+    }
+}
diff --git a/tests/Meritoo/Common/Test/Exception/Regex/InvalidUrlExceptionTest.php b/tests/Meritoo/Common/Test/Exception/Regex/InvalidUrlExceptionTest.php
new file mode 100644
index 0000000..735bae3
--- /dev/null
+++ b/tests/Meritoo/Common/Test/Exception/Regex/InvalidUrlExceptionTest.php
@@ -0,0 +1,60 @@
+<?php
+
+/**
+ * (c) Meritoo.pl, http://www.meritoo.pl
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Meritoo\Common\Test\Exception\Regex;
+
+use Generator;
+use Meritoo\Common\Exception\Regex\InvalidUrlException;
+use Meritoo\Common\Test\Base\BaseTestCase;
+use Meritoo\Common\Type\OopVisibilityType;
+
+/**
+ * Test case of an exception used while url is invalid
+ *
+ * @author    Krzysztof Niziol <krzysztof.niziol@meritoo.pl>
+ * @copyright Meritoo.pl
+ */
+class InvalidUrlExceptionTest extends BaseTestCase
+{
+    public function testConstructorVisibilityAndArguments()
+    {
+        static::assertConstructorVisibilityAndArguments(InvalidUrlException::class, OopVisibilityType::IS_PUBLIC, 1, 1);
+    }
+
+    /**
+     * @param string $url             Invalid url
+     * @param string $expectedMessage Expected exception's message
+     *
+     * @dataProvider provideUrl
+     */
+    public function testConstructorMessage($url, $expectedMessage)
+    {
+        $exception = new InvalidUrlException($url);
+        static::assertEquals($expectedMessage, $exception->getMessage());
+    }
+
+    /**
+     * Provides invalid url and expected exception's message
+     *
+     * @return Generator
+     */
+    public function provideUrl()
+    {
+        $template = 'Url \'%s\' is invalid. Is there everything ok?';
+
+        yield[
+            'aa/bb/cc',
+            sprintf($template, 'aa/bb/cc'),
+        ];
+
+        yield[
+            'http:/images\show\car.jpg',
+            sprintf($template, 'http:/images\show\car.jpg'),
+        ];
+    }
+}
diff --git a/tests/Meritoo/Common/Test/Exception/Type/UnknownOopVisibilityTypeExceptionTest.php b/tests/Meritoo/Common/Test/Exception/Type/UnknownOopVisibilityTypeExceptionTest.php
new file mode 100644
index 0000000..b522263
--- /dev/null
+++ b/tests/Meritoo/Common/Test/Exception/Type/UnknownOopVisibilityTypeExceptionTest.php
@@ -0,0 +1,64 @@
+<?php
+
+/**
+ * (c) Meritoo.pl, http://www.meritoo.pl
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Meritoo\Common\Test\Exception\Type;
+
+use Generator;
+use Meritoo\Common\Exception\Type\UnknownOopVisibilityTypeException;
+use Meritoo\Common\Test\Base\BaseTestCase;
+use Meritoo\Common\Type\OopVisibilityType;
+
+/**
+ * Test case of an exception used while the visibility of a property, a method or (as of PHP 7.1.0) a constant is
+ * unknown
+ *
+ * @author    Krzysztof Niziol <krzysztof.niziol@meritoo.pl>
+ * @copyright Meritoo.pl
+ */
+class UnknownOopVisibilityTypeExceptionTest extends BaseTestCase
+{
+    public function testConstructorVisibilityAndArguments()
+    {
+        static::assertConstructorVisibilityAndArguments(UnknownOopVisibilityTypeException::class, OopVisibilityType::IS_PUBLIC, 1, 1);
+    }
+
+    /**
+     * @param string $unknownType     Unknown OOP-related visibility
+     * @param string $expectedMessage Expected exception's message
+     *
+     * @dataProvider provideUnknownType
+     */
+    public function testConstructorMessage($unknownType, $expectedMessage)
+    {
+        $exception = new UnknownOopVisibilityTypeException($unknownType);
+        static::assertEquals($expectedMessage, $exception->getMessage());
+    }
+
+    /**
+     * Provides path of the empty file and expected exception's message
+     *
+     * @return Generator
+     */
+    public function provideUnknownType()
+    {
+        $allTypes = (new OopVisibilityType())->getAll();
+
+        $template = 'The \'%s\' type of OOP-related visibility is unknown. Probably doesn\'t exist or there is a typo.'
+            . ' You should use one of these types: %s.';
+
+        yield[
+            '',
+            sprintf($template, '', implode(', ', $allTypes)),
+        ];
+
+        yield[
+            123,
+            sprintf($template, 123, implode(', ', $allTypes)),
+        ];
+    }
+}