Add specs

spec/lsquic_spec.cr

@@ -1,9 +1,42 @@
 require "./spec_helper"
 
-describe Lsquic do
-  # TODO: Write tests
-
+describe QUIC do
   it "works" do
-    false.should eq(true)
+    client = QUIC::Client.new("www.youtube.com")
+
+    5.times do
+      client.get("/").status_code.should eq(200)
+    end
+
+    client.close
+  end
+
+  it "works with fibers" do
+    ch = Channel(Int32).new
+
+    5.times do
+      spawn do
+        client = QUIC::Client.new("www.youtube.com")
+
+        5.times do
+          ch.send client.get("/").status_code
+        end
+
+        client.close
+      end
+    end
+
+    (5 * 5).times do
+      ch.receive.should eq(200)
+    end
+  end
+
+  it "restarts engine after closing" do
+    client = QUIC::Client.new("www.youtube.com")
+
+    client.get("/").status_code.should eq(200)
+    client.close
+    Fiber.yield
+    client.get("/").status_code.should eq(200)
   end
 end