Use IO.ANSI.format

mix.exs

@@ -143,10 +143,12 @@ defmodule Sentry.Mixfile do
   end
 
   defp run_integration_tests(integration, args) do
-    header = if IO.ANSI.enabled?(), do: IO.ANSI.bright() <> IO.ANSI.cyan(), else: ""
-    reset = if IO.ANSI.enabled?(), do: IO.ANSI.reset(), else: ""
-
-    IO.puts("\n#{header}==> Running tests for integration: #{integration}#{reset}")
+    IO.puts(
+      IO.ANSI.format([
+        "\n",
+        [:bright, :cyan, "==> Running tests for integration: #{integration}"]
+      ])
+    )
 
     integration_dir = Path.join("test_integrations", integration)
 
@@ -156,12 +158,21 @@ defmodule Sentry.Mixfile do
       )
 
     if status > 0 do
-      error = if IO.ANSI.enabled?(), do: IO.ANSI.red(), else: ""
-      IO.puts("#{error}Integration tests for #{integration} failed#{reset}")
+      IO.puts(
+        IO.ANSI.format([
+          :red,
+          "Integration tests for #{integration} failed"
+        ])
+      )
+
       System.at_exit(fn _ -> exit({:shutdown, 1}) end)
     else
-      success = if IO.ANSI.enabled?(), do: IO.ANSI.green(), else: ""
-      IO.puts("#{success}Integration tests for #{integration} passed#{reset}")
+      IO.puts(
+        IO.ANSI.format([
+          :green,
+          "Integration tests for #{integration} passed"
+        ])
+      )
     end
   end
 end