diff --git a/.eslintignore b/.eslintignore
index 73b26aa6..0d1468db 100644
--- a/.eslintignore
+++ b/.eslintignore
@@ -1,2 +1,3 @@
 dist/*.js
 !.eslintrc.js
+tests/unit/coverage
diff --git a/.travis.yml b/.travis.yml
index e40b6e45..461f44b7 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -6,16 +6,12 @@ cache:
 node_js:
   - "10"
   - "8"
-  - "6"
-
-before_install:
-  - npm i -g npm@">=4.0.0"
 
 install:
   - npm install
 
 script:
-  - npm test
+  - npm run test:unit
 
 deploy:
   provider: npm
diff --git a/babel.config.js b/babel.config.js
index fdf8d343..4d3e9eea 100644
--- a/babel.config.js
+++ b/babel.config.js
@@ -1,4 +1,4 @@
 module.exports = {
 	presets: ["@vue/app"],
-	plugins: ["lodash"]
+	plugins: ["lodash", "istanbul"]
 };
diff --git a/package.json b/package.json
index e8ef9bf4..4ad8dcef 100644
--- a/package.json
+++ b/package.json
@@ -11,8 +11,8 @@
 		"build:core": "cross-env VUE_APP_FULL_BUNDLE=false vue-cli-service build --no-clean --target lib --name vfg-core src/index.js --report",
 		"build:full": "cross-env VUE_APP_FULL_BUNDLE=true  vue-cli-service build --no-clean --target lib --name vfg src/index.js --report",
 		"lint": "vue-cli-service lint",
-		"test:unit": "vue-cli-service test:unit --include ./tests/unit/setup.js",
-		"coverall": "cat ./test/unit/coverage/lcov.info | ./node_modules/coveralls/bin/coveralls.js",
+		"test:unit": "nyc vue-cli-service test:unit --include ./tests/unit/setup.js",
+		"coverall": "cat ./tests/unit/coverage/lcov.info | ./node_modules/coveralls/bin/coveralls.js",
 		"changelog": "conventional-changelog -i CHANGELOG.md -s",
 		"changelog:full": "conventional-changelog -i CHANGELOG.md -s -r 0",
 		"docs": "cd docs && gitbook serve",
@@ -56,15 +56,15 @@
 	"license": "MIT",
 	"dependencies": {},
 	"devDependencies": {
-		"@vue/cli-plugin-babel": "3.0.4",
-		"@vue/cli-plugin-eslint": "3.0.4",
-		"@vue/cli-plugin-unit-mocha": "3.0.4",
-		"@vue/cli-service": "3.0.4",
-		"@vue/eslint-config-prettier": "3.0.4",
+		"@vue/cli-plugin-babel": "3.0.5",
+		"@vue/cli-plugin-eslint": "3.0.5",
+		"@vue/cli-plugin-unit-mocha": "3.0.5",
+		"@vue/cli-service": "3.0.5",
+		"@vue/eslint-config-prettier": "3.0.5",
 		"@vue/test-utils": "1.0.0-beta.25",
-		"babel-plugin-istanbul": "5.0.1",
+		"babel-plugin-istanbul": "5.1.0",
 		"babel-plugin-lodash": "3.3.4",
-		"bumped": "0.10.10",
+		"bumped": "0.10.11",
 		"chai": "4.2.0",
 		"cleave.js": "1.4.4",
 		"conventional-changelog-cli": "2.0.5",
@@ -77,12 +77,12 @@
 		"istanbul-instrumenter-loader": "3.0.1",
 		"jquery": "3.3.1",
 		"lodash-webpack-plugin": "0.11.5",
-		"node-sass": "4.9.3",
+		"node-sass": "4.9.4",
 		"nouislider": "11.1.0",
-		"nyc": "13.0.1",
+		"nyc": "13.1.0",
 		"pikaday": "1.7.0",
 		"sass-loader": "7.1.0",
-		"sinon": "6.3.5",
+		"sinon": "7.0.0",
 		"vue": "2.5.17",
 		"vue-highlightjs": "1.3.3",
 		"vue-markdown": "2.2.4",
@@ -203,7 +203,7 @@
 		"arrowParens": "always"
 	},
 	"nyc": {
-		"check-coverage": true,
+		"check-coverage": false,
 		"per-file": true,
 		"include": [
 			"src/**/*.{js,vue}"
@@ -216,10 +216,11 @@
 		],
 		"reporter": [
 			"lcov",
-			"text"
+			"text",
+			"text-summary"
 		],
 		"report-dir": "./tests/unit/coverage",
-		"temp-directory": "./tests/unit/coverage/.nyc_output",
+		"temp-dir": "./tests/unit/coverage/.nyc_output",
 		"cache": true,
 		"all": true
 	},
diff --git a/src/fields/core/fieldUpload.vue b/src/fields/core/fieldUpload.vue
index 45c6c2a5..b609a427 100644
--- a/src/fields/core/fieldUpload.vue
+++ b/src/fields/core/fieldUpload.vue
@@ -25,9 +25,9 @@ export default {
 	mixins: [abstractField],
 	methods: {
 		onChange($event) {
-			if (isFunction(this.schema.onChanged)) {
+			if (isFunction(this.fieldOptions.onChanged)) {
 				// Schema has defined onChange method.
-				this.schema.onChanged.call(this, this.model, this.schema, $event, this);
+				this.fieldOptions.onChanged.call(this, this.model, this.schema, $event, this);
 			}
 		}
 	}
diff --git a/tests/unit/specs/fields/fieldUpload.spec.js b/tests/unit/specs/fields/fieldUpload.spec.js
index 731a061f..06e09389 100644
--- a/tests/unit/specs/fields/fieldUpload.spec.js
+++ b/tests/unit/specs/fields/fieldUpload.spec.js
@@ -84,4 +84,36 @@ describe("fieldUpload.vue", () => {
 			});
 		});
 	});
+	describe("check onChange methods", () => {
+		let schema = {
+			type: "upload",
+			label: "Upload",
+			inputName: "testupload",
+			placeholder: "",
+			readonly: false,
+			required: false,
+			disabled: false,
+			fieldOptions: {
+				multiple: true,
+				accept: "image/*"
+			}
+		};
+		let model = {};
+		let input;
+
+		before(() => {
+			createField({ schema, model });
+			input = wrapper.find("input");
+			schema.fieldOptions = { inputType: "file" };
+		});
+
+		it("should contain an input text element", () => {
+			schema.fieldOptions.onChanged = sinon.spy();
+			wrapper.setProps({ schema: { ...schema } });
+
+			input.trigger("change", { $event: "MyEvent" });
+
+			expect(schema.fieldOptions.onChanged.calledOnce).to.be.true;
+		});
+	});
 });
diff --git a/vue.config.js b/vue.config.js
index 7bd722dd..febfbd83 100644
--- a/vue.config.js
+++ b/vue.config.js
@@ -47,6 +47,17 @@ module.exports = {
 				}
 			]);
 			config.plugin("lodash").use(LodashModuleReplacementPlugin);
+		} else if (process.env.NODE_ENV === "test") {
+			config.devtool("eval");
+			config.module
+				.rule("istanbul")
+				.test(/\.(js|vue)$/)
+				.enforce("post")
+				.include.add(path.resolve(__dirname, "/src"))
+				.end()
+				.use("istanbul-instrumenter-loader")
+				.loader("istanbul-instrumenter-loader")
+				.options({ esModules: true });
 		} else {
 			config.resolve.alias.set("vue-form-generator", path.resolve("src"));
 		}