housekeeping: update go.mod and fix smoke test

go.mod

@@ -1,6 +1,8 @@
 module github.com/robertgzr/porcelain
 
 require (
+	github.com/mattn/go-colorable v0.0.9 // indirect
+	github.com/mattn/go-isatty v0.0.4 // indirect
 	github.com/robertgzr/color v0.0.0-20180506014805-e601f373894f
-	golang.org/x/sys v0.0.0-20180504064212-6f686a352de6
+	golang.org/x/sys v0.0.0-20180504064212-6f686a352de6 // indirect
 )

porcelain_test.go

@@ -5,16 +5,16 @@ import (
 	"testing"
 )
 
-const expectedDebugOutput string = "&main.PorcInfo{branch:\"master\", commit:\"51c9c58e2175b768137c1e38865f394c76a7d49d\", remote:\"\", upstream:\"origin/master\", ahead:1, behind:10, untracked:5, unmerged:1, Unstaged:main.GitArea{modified:3, added:0, deleted:1, renamed:0, copied:0}, Staged:main.GitArea{modified:0, added:0, deleted:0, renamed:1, copied:0}}"
+const expectedFmtOutput = ` [34mmaster[0m@[32;3m51c9c58[0m [2;43;30m ↑1 [0m[2;41;37m ↓10 [0m [2m?[0m[36m‼[0m[34mΔ[0m [31m✘[0m`
 
-func TestDebugOutput(t *testing.T) {
+func TestFmtOutput(t *testing.T) {
 	var pi = new(PorcInfo)
 	if err := pi.ParsePorcInfo(strings.NewReader(gitoutput)); err != nil {
 		t.Fatal(err)
 	}
 
-	if out := pi.Debug(); out != expectedDebugOutput {
-		t.Logf("\nexpected:\n%s\ngot:\n%s\n", expectedDebugOutput, out)
+	if out := pi.Fmt(); out != expectedFmtOutput {
+		t.Logf("\nexpected:\n%s\ngot:\n%s\n", expectedFmtOutput, out)
 		t.FailNow()
 	}
 }