diff --git a/test/sanity/configuration_test.rb b/test/sanity/configuration_test.rb
index e6ca17c..6caf840 100644
--- a/test/sanity/configuration_test.rb
+++ b/test/sanity/configuration_test.rb
@@ -5,6 +5,17 @@
 describe Sanity::Configuration do
   subject { Sanity::Configuration.new }
 
+  after do
+    Sanity.use_global_config = false
+    Sanity.configure do |config|
+      config.project_id = ""
+      config.dataset = ""
+      config.api_version = ""
+      config.token = ""
+      config.use_cdn = false
+    end
+  end
+
   it { assert_equal "", subject.project_id }
   it { assert_equal "", subject.dataset }
   it { assert_equal "", subject.api_version }
diff --git a/test/sanity/http/where_test.rb b/test/sanity/http/where_test.rb
new file mode 100644
index 0000000..e12aaf9
--- /dev/null
+++ b/test/sanity/http/where_test.rb
@@ -0,0 +1,61 @@
+# frozen_string_literal: true
+
+require "test_helper"
+
+describe Sanity::Http::Where do
+  let(:klass) { Sanity::Http::Where }
+  let(:resource_class) do
+    Class.new do
+      def self.where_api_endpoint
+        "test"
+      end
+    end
+  end
+
+  describe "query parameter serialization" do
+    describe "with GET requests" do
+      subject { klass.new(resource_klass: resource_class, variables: variables) }
+
+      describe "with different variable types" do
+        let(:variables) do
+          {
+            string_var: "hello",
+            array_var: [1, 2, 3],
+            array_of_strings: ["foo", "bar"],
+            hash_var: {"foo" => "bar"},
+            number_var: 42,
+            boolean_var: true
+          }
+        end
+
+        it "properly serializes variables in the query string" do
+          uri = subject.send(:uri)
+          decoded_query = URI.decode_www_form_component(uri.query)
+
+          assert_includes decoded_query, "$string_var=\"hello\""
+          assert_includes decoded_query, "$array_var=[1,2,3]"
+          assert_includes decoded_query, "$array_of_strings=[\"foo\",\"bar\"]"
+          assert_includes decoded_query, "$hash_var={\"foo\":\"bar\"}"
+          assert_includes decoded_query, "$number_var=42"
+          assert_includes decoded_query, "$boolean_var=true"
+        end
+      end
+    end
+
+    describe "with POST requests" do
+      subject { klass.new(resource_klass: resource_class, variables: variables, use_post: true) }
+
+      let(:variables) do
+        {
+          "string_var" => "hello",
+          "array_var" => [1, 2, 3]
+        }
+      end
+
+      it "includes variables in the request body" do
+        body = JSON.parse(subject.send(:request_body))
+        assert_equal variables, body["params"]
+      end
+    end
+  end
+end