Add body assertions

Author: martin-helmich

src/Functions.php

@@ -106,6 +106,11 @@ function bodyMatchesJson($constraints): Constraint
     );
 }
 
+function bodyMatchesForm(array $constraints): Constraint
+{
+    return Psr7Assertions::bodyMatchesForm($constraints);
+}
+
 function isAbsoluteUri(): Constraint
 {
     return new IsAbsoluteUriConstraint();

src/Psr7Assertions.php

@@ -47,6 +47,11 @@ public static function assertMessageBodyMatchesJson(MessageInterface $message, a
         Assert::assertThat($message, static::bodyMatchesJson($jsonConstraints));
     }
 
+    public static function assertMessageBodyMatchesForm(MessageInterface $message, array $formConstraints): void
+    {
+        Assert::assertThat($message, static::bodyMatchesForm($formConstraints));
+    }
+
     public static function assertResponseHasStatus(ResponseInterface $response, int $status): void
     {
         Assert::assertThat($response, static::hasStatus($status));
@@ -221,6 +226,14 @@ public static function bodyMatchesJson(array $constraints): Constraint
         );
     }
 
+    public static function bodyMatchesForm(array $constraints): Constraint
+    {
+        return Assert::logicalAnd(
+            self::hasHeader('content-type', Assert::matchesRegularExpression(',^application/x-www-form-urlencoded(;.+)?$,')),
+            self::bodyMatches(new HasQueryParametersConstraint($constraints))
+        );
+    }
+
     /**
      * @return Constraint
      */