Add support for missing tasks.json file

package.json

@@ -1,6 +1,6 @@
 {
   "name": "medic-conf",
-  "version": "1.16.1",
+  "version": "1.16.2",
   "description": "Configure Medic Mobile deployments",
   "main": "index.js",
   "scripts": {

src/fn/compile-app-settings.js

@@ -30,7 +30,7 @@ module.exports = (projectDir /*, couchUrl */) => {
       contact_summary: readJs(projectDir, 'contact-summary.js'),
       nools: readJs(projectDir, 'rules.nools.js'),
       targets: fs.readJson(`${projectDir}/targets.json`),
-      tasks_schedules: fs.readJson(`${projectDir}/tasks.json`),
+      tasks_schedules: readOptionalJson(`${projectDir}/tasks.json`),
     };
 
     const app_settings = files.app_settings;
@@ -48,6 +48,10 @@ module.exports = (projectDir /*, couchUrl */) => {
 
 };
 
+const readOptionalJson = path => {
+  if(fs.exists(path)) return fs.readJson(path);
+};
+
 function applyTransforms(app_settings, inherited) {
   doDelete(app_settings, inherited.delete);
   doReplace(app_settings, inherited.replace);

test/data/compile-app-settings/no-tasks.json/app_settings.expected.json

@@ -0,0 +1,7 @@
+{
+  "contact_summary": "",
+  "tasks": {
+    "rules": "",
+    "targets": {}
+  }
+}

test/data/compile-app-settings/no-tasks.json/project/app_settings.json

@@ -0,0 +1 @@
+{}

test/data/compile-app-settings/no-tasks.json/project/targets.json

@@ -0,0 +1 @@
+{}

test/fn/compile-app-settings.spec.js

@@ -13,6 +13,9 @@ describe('compile-app-settings', () => {
   it('should handle nools & contact-summary templating', () =>
     test('templating/project'));
 
+  it('should handle config with no separate tasks.json file', () =>
+    test('no-tasks.json/project'));
+
 });
 
 function test(relativeProjectDir) {