diff --git a/makefile b/makefile
index d6d2f8c..086e5b2 100644
--- a/makefile
+++ b/makefile
@@ -1,8 +1,20 @@
-compile:
+compile: clean get-deps
 	./rebar --jobs=1 compile
 
+compile-test: get-test-deps
+	./rebar --config rebar.test.config --jobs 1 compile
+
 clean:
 	./rebar clean
 
-test: clean
-	./rebar --jobs=1 eunit
\ No newline at end of file
+clean-test:
+	./rebar --config rebar.test.config clean
+
+get-deps:
+	./rebar get-deps
+
+get-test-deps:
+	./rebar --config rebar.test.config get-deps
+
+test: clean-test compile-test
+	./rebar --config rebar.test.config --jobs 1 skip_deps=true eunit
\ No newline at end of file
diff --git a/rebar.config b/rebar.config
index 6303376..303b263 100644
--- a/rebar.config
+++ b/rebar.config
@@ -1,10 +1,3 @@
-%% edit eunit_test_path if you want to run your own tests, use "../" not "./" as 
-%%   rebar changes to working dir to .eunit when running tests
-{eunit_compile_opts, [{d, eunit_test_path, "../test/cases"}]}.
-
-%% uncomment to get verbose output from test suite
-%% {eunit_opts, [verbose]}.
-
 {erl_opts, [{i, "src"}, {src_dirs, ["src"]},
             warn_unused_vars,
             warn_export_all,
diff --git a/rebar.test.config b/rebar.test.config
new file mode 100644
index 0000000..ae6cc33
--- /dev/null
+++ b/rebar.test.config
@@ -0,0 +1,30 @@
+%% edit eunit_test_path if you want to run your own tests, use "../" not "./" as 
+%%   rebar changes to working dir to .eunit when running tests
+{eunit_compile_opts, [{d, eunit_test_path, "../test/cases"}]}.
+
+%% uncomment to get verbose output from test suite
+%% {eunit_opts, [verbose]}.
+
+{erl_opts, [{i, "src"}, {src_dirs, ["src"]},
+            warn_unused_vars,
+            warn_export_all,
+            warn_shadow_vars,
+            warn_unused_import,
+            warn_unused_function,
+            warn_bif_clash,
+            warn_unused_record,
+            warn_deprecated_function,
+            warn_obsolete_guard,
+            strict_validation,
+            warn_export_vars,
+            warn_exported_vars]}.
+{dialyzer_opts, [{warnings, [unmatched_returns, error_handling, race_conditions, behaviours]}]}.
+{xref_checks, [undefined_function_calls]}.
+{cover_enabled, true}.
+
+{deps, [
+    {'meck',
+        ".*",
+        {git, "git://github.com/eproxus/meck.git"}
+    }
+]}.
\ No newline at end of file
diff --git a/src/jsx_to_json.erl b/src/jsx_to_json.erl
index bcba3c6..6d012f5 100644
--- a/src/jsx_to_json.erl
+++ b/src/jsx_to_json.erl
@@ -176,12 +176,24 @@ indent_or_space(Opts) ->
 -ifdef(TEST).
 -include_lib("eunit/include/eunit.hrl").
 
+setup_nicedecimal_meck(Return) ->
+    ok = meck:new(nicedecimal),
+    ok = meck:expect(nicedecimal, format, fun(1.23) -> Return end).
+
+teardown_nicedecimal_meck(_) ->
+    ?assert(meck:validate(nicedecimal)),
+    ok = meck:unload(nicedecimal).
+
 basic_format_test_() ->
     [
         {"empty object", ?_assert(format(<<"{}">>, []) =:= <<"{}">>)},
         {"empty array", ?_assert(format(<<"[]">>, []) =:= <<"[]">>)},
         {"naked integer", ?_assert(format(<<"123">>, []) =:= <<"123">>)},
-        {"naked float", ?_assert(format(<<"1.23">>, []) =:= <<"1.23">>)},
+        {foreach,
+            fun() -> setup_nicedecimal_meck(<<"1.23">>) end,
+            fun(R) -> teardown_nicedecimal_meck(R) end,
+            [{"naked float", ?_assert(format(<<"1.23">>, []) =:= <<"1.23">>)}]
+        },
         {"naked string", ?_assert(format(<<"\"hi\"">>, []) =:= <<"\"hi\"">>)},
         {"naked literal", ?_assert(format(<<"true">>, []) =:= <<"true">>)},
         {"simple object", 
@@ -229,7 +241,11 @@ basic_to_json_test_() ->
         {"empty object", ?_assert(to_json([{}], []) =:= <<"{}">>)},
         {"empty array", ?_assert(to_json([], []) =:= <<"[]">>)},
         {"naked integer", ?_assert(to_json(123, []) =:= <<"123">>)},
-        {"naked float", ?_assert(to_json(1.23, []) =:= <<"1.23">>)},
+        {foreach,
+            fun() -> setup_nicedecimal_meck(<<"1.23">>) end,
+            fun(R) -> teardown_nicedecimal_meck(R) end,
+            [{"naked float", ?_assert(to_json(1.23, []) =:= <<"1.23">>)}]
+        },
         {"naked string", ?_assert(to_json(<<"hi">>, []) =:= <<"\"hi\"">>)},
         {"naked literal", ?_assert(to_json(true, []) =:= <<"true">>)},
         {"simple object", 
@@ -316,11 +332,16 @@ opts_test_() ->
                 ) =:= <<"{\"a\":  true,  \"b\":  true,  \"c\":  true}">>
             )
         },
-        {"array indent", 
-            ?_assert(format(<<"[1.0, 2.0, 3.0]">>, 
-                    [{indent, 2}]
-                ) =:= <<"[\n  1.0,\n  2.0,\n  3.0\n]">>
-            )
+        {foreach,
+            fun() -> setup_nicedecimal_meck(<<"1.23">>) end,
+            fun(R) -> teardown_nicedecimal_meck(R) end,
+            [{
+                "array indent",
+                ?_assert(format(<<"[1.23, 1.23, 1.23]">>, 
+                        [{indent, 2}]
+                    ) =:= <<"[\n  1.23,\n  1.23,\n  1.23\n]">>
+                )
+            }]
         },
         {"object indent",
             ?_assert(format(<<"{\"a\":true,\"b\":true,\"c\":true}">>,