diff --git a/.gitignore b/.gitignore
index 9e216d8..9d30cc9 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,2 +1,129 @@
-cmd/stock/config.conf
+## Core latex/pdflatex auxiliary files:
+*.aux
+*.lof
+*.log
+*.lot
+*.fls
+*.out
+*.toc
+
+## Intermediate documents:
+*.dvi
+*-converted-to.*
+# these rules might exclude image files for figures etc.
+*.ps
+*.eps
+*.pdf
+
+## Bibliography auxiliary files (bibtex/biblatex/biber):
+*.bbl
+*.bcf
+*.blg
+*-blx.aux
+*-blx.bib
+*.brf
+*.run.xml
+
+## Build tool auxiliary files:
+*.fdb_latexmk
+*.synctex
+*.synctex.gz
+*.synctex.gz(busy)
+*.pdfsync
+
+## Auxiliary and intermediate files from other packages:
+
+# algorithms
+*.alg
+*.loa
+
+# achemso
+acs-*.bib
+
+# amsthm
+*.thm
+
+# beamer
+*.nav
+*.snm
+*.vrb
+
+#(e)ledmac/(e)ledpar
+*.end
+*.[1-9]
+*.[1-9][0-9]
+*.[1-9][0-9][0-9]
+*.[1-9]R
+*.[1-9][0-9]R
+*.[1-9][0-9][0-9]R
+*.eledsec[1-9]
+*.eledsec[1-9]R
+*.eledsec[1-9][0-9]
+*.eledsec[1-9][0-9]R
+*.eledsec[1-9][0-9][0-9]
+*.eledsec[1-9][0-9][0-9]R
+
+# glossaries
+*.acn
+*.acr
+*.glg
+*.glo
+*.gls
+
+# hyperref
+*.brf
+
+# knitr
+*-concordance.tex
+*.tikz
+*-tikzDictionary
+
+# listings
+*.lol
+
+# makeidx
+*.idx
+*.ilg
+*.ind
+*.ist
+
+# minitoc
+*.maf
+*.mtc
+*.mtc0
+
+# minted
+_minted*
+*.pyg
+
+# morewrites
+*.mw
+
+# nomencl
+*.nlo
+
+# sagetex
+*.sagetex.sage
+*.sagetex.py
+*.sagetex.scmd
+
+# sympy
+*.sout
+*.sympy
+sympy-plots-for-*.tex/
+
+# todonotes
+*.tdo
+
+# xindy
+*.xdy
+
+
+__pycache__
+
+# IDE's go
 .idea/
+
+
+# go project
+cmd/stock/config.conf
diff --git a/models/product.go b/models/product.go
index f7ee002..4a7d17c 100644
--- a/models/product.go
+++ b/models/product.go
@@ -1,5 +1,6 @@
 package models
 
+// TODO DRAFT for a rest request to a other microservice
 func ProductExists(id int64) (bool, error) {
 	return true, nil
 }
diff --git a/models/product_test.go b/models/product_test.go
new file mode 100644
index 0000000..b10d3d0
--- /dev/null
+++ b/models/product_test.go
@@ -0,0 +1,15 @@
+package models
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestProductExists(t *testing.T) {
+	assert := assert.New(t)
+	ok, err := ProductExists(3)
+
+	assert.True(ok)
+	assert.NoError(err)
+}