diff --git a/jest.config.js b/jest.config.js
index facd1c8a7..874d9ac0b 100644
--- a/jest.config.js
+++ b/jest.config.js
@@ -70,7 +70,8 @@ module.exports = {
         `front`,
         `modules`,
         `front/node_modules`,
-        `node_modules`
+        `node_modules`,
+        `print`
     ],
 
     // An array of file extensions your modules use
@@ -153,6 +154,7 @@ module.exports = {
     // The glob patterns Jest uses to detect test files
     testMatch: [
         '**/front/**/*.spec.js',
+        '**/print/**/*.spec.js',
     // 'loopback/**/*.spec.js',
     // 'modules/*/back/**/*.spec.js'
     //   "**/__tests__/**/*.[jt]s?(x)",
diff --git a/print/core/config.js b/print/core/config.js
index 864e1658a..5194762b4 100644
--- a/print/core/config.js
+++ b/print/core/config.js
@@ -4,8 +4,8 @@ let env = process.env.NODE_ENV ? process.env.NODE_ENV : 'development';
 let configPath = `/etc/salix`;
 let config = require('../config/print.json');
 let configFiles = [
-    `${appPath}/config/print.local.json`,
-    `${appPath}/config/print.${env}.json`,
+    `../config/print.local.json`,
+    `../config/print.${env}.json`,
     `${configPath}/print.json`,
     `${configPath}/print.local.json`,
     `${configPath}/print.${env}.json`
diff --git a/print/core/filters/currency.js b/print/core/filters/currency.js
index ec6808906..098c2fe20 100644
--- a/print/core/filters/currency.js
+++ b/print/core/filters/currency.js
@@ -2,9 +2,13 @@ const Vue = require('vue');
 const config = require('../config');
 const defaultLocale = config.i18n.locale;
 
-Vue.filter('currency', function(value, currency = 'EUR', locale = defaultLocale) {
+const currency = function(value, currency = 'EUR', locale = defaultLocale) {
     if (!locale) locale = defaultLocale;
     return new Intl.NumberFormat(locale, {
         style: 'currency', currency
     }).format(parseFloat(value));
-});
+};
+
+Vue.filter('currency', currency);
+
+module.exports = currency;
diff --git a/print/core/filters/date.js b/print/core/filters/date.js
index 5d1bc0de5..70267c76e 100644
--- a/print/core/filters/date.js
+++ b/print/core/filters/date.js
@@ -1,7 +1,11 @@
 const Vue = require('vue');
 const strftime = require('strftime');
 
-Vue.filter('date', function(value, specifiers = '%d-%m-%Y') {
+const date = function(value, specifiers = '%d-%m-%Y') {
     if (!(value instanceof Date)) value = new Date(value);
     return strftime(specifiers, value);
-});
+};
+
+Vue.filter('date', date);
+
+module.exports = date;
diff --git a/print/core/filters/number.js b/print/core/filters/number.js
index c785706fe..a0c5e61f7 100644
--- a/print/core/filters/number.js
+++ b/print/core/filters/number.js
@@ -2,9 +2,13 @@ const Vue = require('vue');
 const config = require('../config');
 const defaultLocale = config.i18n.locale;
 
-Vue.filter('number', function(value, locale = defaultLocale) {
+const number = function(value, locale = defaultLocale) {
     if (!locale) locale = defaultLocale;
     return new Intl.NumberFormat(locale, {
         style: 'decimal'
     }).format(parseFloat(value));
-});
+};
+
+Vue.filter('number', number);
+
+module.exports = number;
diff --git a/print/core/filters/percentage.js b/print/core/filters/percentage.js
index 078d2fd89..c535fe944 100644
--- a/print/core/filters/percentage.js
+++ b/print/core/filters/percentage.js
@@ -2,11 +2,15 @@ const Vue = require('vue');
 const config = require('../config');
 const defaultLocale = config.i18n.locale;
 
-Vue.filter('percentage', function(value, minFraction = 2, maxFraction = 2, locale = defaultLocale) {
+const percentage = function(value, minFraction = 2, maxFraction = 2, locale = defaultLocale) {
     if (!locale) locale = defaultLocale;
     return new Intl.NumberFormat(locale, {
         style: 'percent',
         minimumFractionDigits: minFraction,
         maximumFractionDigits: maxFraction
     }).format(parseFloat(value));
-});
+};
+
+Vue.filter('percentage', percentage);
+
+module.exports = percentage;
diff --git a/print/core/filters/specs/currency.spec.js b/print/core/filters/specs/currency.spec.js
new file mode 100644
index 000000000..5a345ddbe
--- /dev/null
+++ b/print/core/filters/specs/currency.spec.js
@@ -0,0 +1,16 @@
+// Extended locale intl polyfill
+const IntlPolyfill = require('intl');
+Intl.NumberFormat = IntlPolyfill.NumberFormat;
+Intl.DateTimeFormat = IntlPolyfill.DateTimeFormat;
+
+import currency from '../currency.js';
+
+describe('currency filter', () => {
+    it('should filter the currency in spanish as default', () => {
+        expect(currency(999, 'EUR')).toEqual('999,00 €');
+    });
+
+    it('should filter the currency in english', () => {
+        expect(currency(999, 'EUR', 'en')).toEqual('€999.00');
+    });
+});
diff --git a/print/core/filters/specs/date.spec.js b/print/core/filters/specs/date.spec.js
new file mode 100644
index 000000000..aa38af515
--- /dev/null
+++ b/print/core/filters/specs/date.spec.js
@@ -0,0 +1,27 @@
+import date from '../date.js';
+
+describe('date filter', () => {
+    const superDuperDate = new Date('February 18, 1984 @ 11:30:00 am');
+
+    it('should filter the date as %d-%m-%Y by default', () => {
+        expect(date(superDuperDate)).toEqual('18-02-1984');
+    });
+
+    it('should filter the date as %m-%d-%Y', () => {
+        const dateFormat = '%m-%d-%Y';
+
+        expect(date(superDuperDate, dateFormat)).toEqual('02-18-1984');
+    });
+
+    it('should filter the date as %y-%d-%m', () => {
+        const dateFormat = '%y-%d-%m';
+
+        expect(date(superDuperDate, dateFormat)).toEqual('84-18-02');
+    });
+
+    it('should filter the date as %Y-%d-%m', () => {
+        const dateFormat = '%Y-%d-%m';
+
+        expect(date(superDuperDate, dateFormat)).toEqual('1984-18-02');
+    });
+});
diff --git a/print/core/filters/specs/number.spec.js b/print/core/filters/specs/number.spec.js
new file mode 100644
index 000000000..752200694
--- /dev/null
+++ b/print/core/filters/specs/number.spec.js
@@ -0,0 +1,9 @@
+import number from '../number.js';
+
+describe('number filter', () => {
+    const superDuperNumber = 18021984;
+
+    it('should filter the number with commas by default', () => {
+        expect(number(superDuperNumber)).toEqual('18,021,984');
+    });
+});
diff --git a/print/core/filters/specs/percentage.spec.js b/print/core/filters/specs/percentage.spec.js
new file mode 100644
index 000000000..0a9111cbc
--- /dev/null
+++ b/print/core/filters/specs/percentage.spec.js
@@ -0,0 +1,11 @@
+import percentage from '../percentage.js';
+
+describe('percentage filter', () => {
+    it('should filter the percentage also round it correctly', () => {
+        expect(percentage(99.9999999999999999 / 100)).toEqual('100.00%');
+    });
+
+    it('should filter the percentage and round it correctly', () => {
+        expect(percentage(1.25444444444444444 / 100)).toEqual('1.25%');
+    });
+});
diff --git a/print/core/filters/specs/uppercase.spec.js b/print/core/filters/specs/uppercase.spec.js
new file mode 100644
index 000000000..77c493359
--- /dev/null
+++ b/print/core/filters/specs/uppercase.spec.js
@@ -0,0 +1,10 @@
+import uppercase from '../uppercase.js';
+
+describe('uppercase filter', () => {
+    it('should filter the string to uppercase', () => {
+        let lowerCase = 'text';
+        let upperCase = 'TEXT';
+
+        expect(uppercase(lowerCase)).toEqual(upperCase);
+    });
+});
diff --git a/print/core/filters/uppercase.js b/print/core/filters/uppercase.js
index a4a826070..806b996f2 100644
--- a/print/core/filters/uppercase.js
+++ b/print/core/filters/uppercase.js
@@ -1,5 +1,9 @@
 const Vue = require('vue');
 
-Vue.filter('uppercase', function(value) {
+const uppercase = function(value) {
     return value.toUpperCase();
-});
+};
+
+Vue.filter('uppercase', uppercase);
+
+module.exports = uppercase;