diff --git a/composer.json b/composer.json
index e9b4c7c..928386e 100644
--- a/composer.json
+++ b/composer.json
@@ -26,7 +26,7 @@
         "php": "^7.4 || ^8.0",
         "ext-mbstring": "*",
         "cypresslab/php-curry": "^0.5.0",
-        "mallardduck/immutable-read-file": "^0.5.2"
+        "mallardduck/immutable-read-file": "^0.5.3"
     },
     "require-dev": {
         "ext-json": "*",
@@ -56,7 +56,7 @@
     },
     "autoload-dev": {
         "psr-4": {
-            "Tests\\Verraes\\Parsica\\": "tests/"
+            "Tests\\Parsica\\Parsica\\": "tests/"
         }
     },
     "scripts": {
diff --git a/src/PHPUnit/ParserAssertions.php b/src/PHPUnit/ParserAssertions.php
index fae0ec8..19e1af4 100644
--- a/src/PHPUnit/ParserAssertions.php
+++ b/src/PHPUnit/ParserAssertions.php
@@ -12,6 +12,7 @@
 
 use Exception;
 use Parsica\Parsica\Parser;
+use Parsica\Parsica\Stream;
 use Parsica\Parsica\StringStream;
 
 /**
@@ -46,6 +47,29 @@ protected function assertParses(string $input, Parser $parser, $expectedOutput,
         }
     }
 
+    /**
+     * @psalm-param mixed $expectedOutput
+     *
+     * @api
+     */
+    protected function assertParsesStream(Stream $input, Parser $parser, $expectedOutput, string $message = ""): void
+    {
+        $actualResult = $parser->run($input);
+        if ($actualResult->isSuccess()) {
+            $this->assertStrictlyEquals(
+                $expectedOutput,
+                $actualResult->output(),
+                $message . "\n" . "The parser succeeded but the output doesn't match your expected output."
+            );
+        } else {
+            $this->fail(
+                $message . "\n"
+                ."The parser failed with the following error message:\n"
+                .$actualResult->errorMessage()."\n"
+            );
+        }
+    }
+
     /**
      * Behaves like assertSame for primitives, behaves like assertEquals for objects of the same type, and fails
      * for everything else.
diff --git a/src/TextFileStream.php b/src/TextFileStream.php
index 586161c..720e838 100644
--- a/src/TextFileStream.php
+++ b/src/TextFileStream.php
@@ -1,12 +1,12 @@
 <?php declare(strict_types=1);
 
-namespace Verraes\Parsica;
+namespace Parsica\Parsica;
 
 use InvalidArgumentException;
 use MallardDuck\ImmutableReadFile\ImmutableFile;
-use Verraes\Parsica\Internal\EndOfStream;
-use Verraes\Parsica\Internal\Position;
-use Verraes\Parsica\Internal\TakeResult;
+use Parsica\Parsica\Internal\EndOfStream;
+use Parsica\Parsica\Internal\Position;
+use Parsica\Parsica\Internal\TakeResult;
 
 /**
  * @psalm-external-mutation-free
diff --git a/tests/Examples/ExcelClasses.php b/tests/Examples/ExcelClasses.php
index 1a656e8..a48dee6 100644
--- a/tests/Examples/ExcelClasses.php
+++ b/tests/Examples/ExcelClasses.php
@@ -1,6 +1,6 @@
 <?php
 
-namespace Tests\Verraes\Parsica\Examples;
+namespace Tests\Parsica\Parsica\Examples;
 
 class Cell
 {
diff --git a/tests/Examples/ExcelTextFileStreamTest.php b/tests/Examples/ExcelTextFileStreamTest.php
index c3a94ac..272d465 100644
--- a/tests/Examples/ExcelTextFileStreamTest.php
+++ b/tests/Examples/ExcelTextFileStreamTest.php
@@ -8,13 +8,13 @@
  * file that was distributed with this source code.
  */
 
-namespace Tests\Verraes\Parsica\Examples;
+namespace Tests\Parsica\Parsica\Examples;
 
 use PHPUnit\Framework\TestCase;
-use Verraes\Parsica\Parser;
-use Verraes\Parsica\PHPUnit\ParserAssertions;
-use Verraes\Parsica\TextFileStream;
-use function Verraes\Parsica\{alphaChar, between, char, collect, digitChar, skipHSpace1, space, string};
+use Parsica\Parsica\Parser;
+use Parsica\Parsica\PHPUnit\ParserAssertions;
+use Parsica\Parsica\TextFileStream;
+use function Parsica\Parsica\{alphaChar, between, char, collect, digitChar, skipHSpace1, space, string};
 
 final class ExcelTextFileStreamTest extends TestCase
 {
diff --git a/tests/Internal/TextFileStreamTest.php b/tests/Internal/TextFileStreamTest.php
index 4725d43..b4732e7 100644
--- a/tests/Internal/TextFileStreamTest.php
+++ b/tests/Internal/TextFileStreamTest.php
@@ -8,11 +8,11 @@
  * file that was distributed with this source code.
  */
 
-namespace Tests\Verraes\Parsica\Internal;
+namespace Tests\Parsica\Parsica\Internal;
 
 use PHPUnit\Framework\TestCase;
-use Verraes\Parsica\Internal\Position;
-use Verraes\Parsica\TextFileStream;
+use Parsica\Parsica\Internal\Position;
+use Parsica\Parsica\TextFileStream;
 
 final class TextFileStreamTest extends TestCase
 {