Fix race condition in tests with ports

test/statix/config_test.exs

@@ -1,10 +1,12 @@
 defmodule Statix.ConfigTest do
-  use Statix.TestCase, async: false
+  @server_port 8325
+
+  use Statix.TestCase, async: false, port: @server_port
 
   use Statix, runtime_config: true
 
   test "connect/1" do
-    connect(tags: ["tag:test"], prefix: "foo")
+    connect(tags: ["tag:test"], prefix: "foo", port: @server_port)
 
     increment("sample", 2)
     assert_receive {:test_server, _, "foo.sample:2|c|#tag:test"}
@@ -13,7 +15,7 @@ defmodule Statix.ConfigTest do
   test "global tags when present" do
     Application.put_env(:statix, :tags, ["tag:test"])
 
-    connect()
+    connect(port: @server_port)
 
     increment("sample", 3)
     assert_receive {:test_server, _, "sample:3|c|#tag:test"}
@@ -27,7 +29,7 @@ defmodule Statix.ConfigTest do
   test "global connection-specific tags" do
     Application.put_env(:statix, __MODULE__, tags: ["tag:test"])
 
-    connect()
+    connect(port: @server_port)
 
     set("sample", 4)
     assert_receive {:test_server, _, "sample:4|s|#tag:test"}

test/statix/pool_test.exs

@@ -1,12 +1,14 @@
 defmodule Statix.PoolingTest do
-  use Statix.TestCase
+  @server_port 8425
+
+  use Statix.TestCase, port: @server_port
 
   use Statix, runtime_config: true
 
   @pool_size 3
 
   setup do
-    connect(pool_size: @pool_size)
+    connect(pool_size: @pool_size, port: @server_port)
   end
 
   test "starts :pool_size number of ports and randomly picks one" do

test/statix_test.exs

@@ -1,7 +1,9 @@
 runtime_config? = System.get_env("STATIX_TEST_RUNTIME_CONFIG") in ["1", "true"]
 
 defmodule StatixTest do
-  use Statix.TestCase
+  @server_port 8525
+
+  use Statix.TestCase, port: @server_port
 
   import ExUnit.CaptureLog
 
@@ -13,7 +15,7 @@ defmodule StatixTest do
   end
 
   setup do
-    connect()
+    connect(port: @server_port)
   end
 
   test "increment/1,2,3" do