don't restrict addParam() to string values

src/Core/Query/AbstractQuery.php

@@ -149,11 +149,11 @@ public function getHelper(): Helper
      * Therefore the params are limited in functionality. Only add and get
      *
      * @param string $name
-     * @param string $value
+     * @param mixed  $value
      *
      * @return self Provides fluent interface
      */
-    public function addParam(string $name, string $value): QueryInterface
+    public function addParam(string $name, $value): QueryInterface
     {
         $this->params[$name] = $value;
 

src/Core/Query/QueryInterface.php

@@ -82,11 +82,11 @@ public function getHelper(): Helper;
      * Therefore the params are limited in functionality. Only add and get
      *
      * @param string $name
-     * @param string $value
+     * @param mixed  $value
      *
      * @return self Provides fluent interface
      */
-    public function addParam(string $name, string $value): self;
+    public function addParam(string $name, $value): self;
 
     /**
      * Get extra params.

tests/Core/Query/RequestBuilderTest.php

@@ -32,6 +32,36 @@ public function testBuild()
         );
     }
 
+    public function testBuildWithBoolean()
+    {
+        $query = new SelectQuery();
+        $query->addParam('p1', 'v1');
+        $query->addParam('p2', true);
+        $query->addParam('p3', false);
+        $query->setResponseWriter('xyz');
+        $request = $this->builder->build($query);
+
+        $this->assertSame(
+            'select?omitHeader=true&p1=v1&p2=true&p3=false&wt=xyz',
+            urldecode($request->getUri())
+        );
+    }
+
+    public function testBuildWithInteger()
+    {
+        $query = new SelectQuery();
+        $query->addParam('p1', 'v1');
+        $query->addParam('p2', 1);
+        $query->addParam('p3', 0);
+        $query->setResponseWriter('xyz');
+        $request = $this->builder->build($query);
+
+        $this->assertSame(
+            'select?omitHeader=true&p1=v1&p2=1&p3=0&wt=xyz',
+            urldecode($request->getUri())
+        );
+    }
+
     public function testBuildWithHeader()
     {
         $query = new SelectQuery();