diff --git a/lib/mix/test/mix/tasks/profile.fprof_test.exs b/lib/mix/test/mix/tasks/profile.fprof_test.exs
index 3161e4542dc..0e4bbfd5dfb 100644
--- a/lib/mix/test/mix/tasks/profile.fprof_test.exs
+++ b/lib/mix/test/mix/tasks/profile.fprof_test.exs
@@ -1,4 +1,4 @@
-Code.require_file "../../test_helper.exs", __DIR__
+Code.require_file("../../test_helper.exs", __DIR__)
 
 defmodule Mix.Tasks.Profile.FprofTest do
   use MixTest.Case
@@ -11,8 +11,8 @@ defmodule Mix.Tasks.Profile.FprofTest do
   test "profiles evaluated expression", context do
     in_tmp context.test, fn ->
       assert capture_io(fn ->
-        Fprof.run(["-e", "Enum.each(1..5, fn(_) -> MapSet.new end)"])
-      end) =~ ~r(MapSet\.new/0 *5 *\d+\.\d{3} *\d+\.\d{3})
+               Fprof.run(["-e", "Enum.each(1..5, fn(_) -> MapSet.new end)"])
+             end) =~ ~r(MapSet\.new/0 *5 *\d+\.\d{3} *\d+\.\d{3})
     end
   end
 
@@ -20,29 +20,28 @@ defmodule Mix.Tasks.Profile.FprofTest do
     in_tmp context.test, fn ->
       profile_script_name = "profile_script.ex"
 
-      File.write! profile_script_name, """
+      File.write!(profile_script_name, """
       Enum.each(1..5, fn(_) -> MapSet.new end)
-      """
+      """)
 
       assert capture_io(fn ->
-        Fprof.run([profile_script_name])
-      end) =~ ~r(MapSet\.new/0 *5 *\d+\.\d{3} *\d+\.\d{3})
+               Fprof.run([profile_script_name])
+             end) =~ ~r(MapSet\.new/0 *5 *\d+\.\d{3} *\d+\.\d{3})
     end
   end
 
   test "expands callers", context do
     in_tmp context.test, fn ->
       assert capture_io(fn ->
-        Fprof.run(["-e", "Enum.each(1..5, fn(_) -> MapSet.new end)", "--callers"])
-      end) =~ ~r(MapSet\.new/0 *5 *\d+\.\d{3} *\d+\.\d{3} +<--)
+               Fprof.run(["-e", "Enum.each(1..5, fn(_) -> MapSet.new end)", "--callers"])
+             end) =~ ~r(MapSet\.new/0 *5 *\d+\.\d{3} *\d+\.\d{3} +<--)
     end
   end
 
   test "expands processes", context do
     in_tmp context.test, fn ->
-      output = capture_io(fn ->
-        Fprof.run(["-e", "spawn(fn -> Process.sleep(:infinity) end); Enum.each(1..5, fn(_) -> MapSet.new end)", "--details"])
-      end)
+      expr = "spawn(fn -> Process.sleep(:infinity) end); Enum.each(1..5, fn(_) -> MapSet.new end)" 
+      output =capture_io(fn -> Fprof.run(["-e",expr,"--details"]) end)
       assert output =~ ~r(#{:erlang.pid_to_list(self())} +\d+ +\d+\.\d{3})
       assert output =~ ~r(spawned by #{:erlang.pid_to_list(self())})
       assert output =~ ~r(as :erlang.apply)
@@ -52,33 +51,34 @@ defmodule Mix.Tasks.Profile.FprofTest do
 
   test "sort options", context do
     in_tmp context.test, fn ->
-      assert capture_io(fn ->
-        Fprof.run(["-e", "Enum.each(1..5, fn(_) -> MapSet.new end)", "--sort", "acc"])
-      end) =~ ~r(MapSet\.new/0 *5 *\d+\.\d{3} *\d+\.\d{3})
+      expr = "Enum.each(1..5, fn(_) -> MapSet.new end)"
+      assert capture_io(fn -> Fprof.run(["-e",expr, "--sort", "acc"]) end) =~ ~r(MapSet\.new/0 *5 *\d+\.\d{3} *\d+\.\d{3})
 
-      assert capture_io(fn ->
-        Fprof.run(["-e", "Enum.each(1..5, fn(_) -> MapSet.new end)", "--sort", "own"])
-      end) =~ ~r(MapSet\.new/0 *5 *\d+\.\d{3} *\d+\.\d{3})
+      expr = "Enum.each(1..5, fn(_) -> MapSet.new end)"
+      assert capture_io(fn -> Fprof.run(["-e",expr, "--sort", "own"]) end) =~ ~r(MapSet\.new/0 *5 *\d+\.\d{3} *\d+\.\d{3})
     end
   end
 
   test "errors on missing files", context do
     in_tmp context.test, fn ->
-      assert_raise Mix.Error, "No files matched pattern \"non-existent\" given to --require", fn ->
-        capture_io(fn -> Fprof.run ["-r", "non-existent"] end)
-      end
+      message = "No files matched pattern \"non-existent\" given to --require"
 
-      assert_raise Mix.Error, "No files matched pattern \"non-existent\" given to --require", fn ->
-        capture_io(fn -> Fprof.run ["-pr", "non-existent"] end)
-      end
+      assert_raise Mix.Error,message,fn ->
+                     capture_io(fn -> Fprof.run(["-r", "non-existent"]) end)
+                   end
 
+      assert_raise Mix.Error,message,fn ->
+                     capture_io(fn -> Fprof.run(["-pr", "non-existent"]) end)
+                   end
+                   
       assert_raise Mix.Error, "No such file: non-existent", fn ->
-        capture_io(fn -> Fprof.run ["non-existent"] end)
+        capture_io(fn -> Fprof.run(["non-existent"]) end)
       end
 
       File.mkdir_p!("lib")
+
       assert_raise Mix.Error, "No such file: lib", fn ->
-        capture_io(fn -> Fprof.run ["lib"] end)
+        capture_io(fn -> Fprof.run(["lib"]) end)
       end
     end
   end
@@ -86,12 +86,12 @@ defmodule Mix.Tasks.Profile.FprofTest do
   test "warmup", context do
     in_tmp context.test, fn ->
       assert capture_io(fn ->
-        Fprof.run(["-e", "Enum.each(1..5, fn(_) -> MapSet.new end)"])
-      end) =~ "Warmup..."
+               Fprof.run(["-e", "Enum.each(1..5, fn(_) -> MapSet.new end)"])
+             end) =~ "Warmup..."
 
       refute capture_io(fn ->
-        Fprof.run(["-e", "Enum.each(1..5, fn(_) -> MapSet.new end)", "--no-warmup"])
-      end) =~ "Warmup..."
+               Fprof.run(["-e", "Enum.each(1..5, fn(_) -> MapSet.new end)", "--no-warmup"])
+             end) =~ "Warmup..."
     end
   end
 end