feat(API): Adding support for passing a template string (#15)

* master

adding support for passing a template string

* the template string needs to be promised in this chain

* templateString tests

* resolving lint errors

* fixing a lint error on test

* master

adding update stack test

README.md

@@ -109,8 +109,10 @@ Write your application:
 const cfnDeploy = require('cfn-deploy');
 
 const eventStream = cfnDeploy({
+  region: 'us-east-1',
   stackname: 'fancy-stack',
-  template: 'cfn/cfn-stack.yaml',
+  template: 'cfn/cfn-stack.yaml', // if referencing external file
+  templateString: JSON.stringify(myCloudFormationJson), // if using a template string already in memory
 });
 
 eventStream.on('EXECUTING_CHANGESET', () => {

index.js

@@ -35,7 +35,12 @@ module.exports = (args) => {
   new Promise((resolve) => resolve())
     // Load files
     .then(() => events.emit('LOADING_FILES'))
-    .then(() => loadTemplateFile(args.template))
+    .then(() => {
+      if (args.templateString && args.templateString.length) {
+        return Promise.resolve(args.templateString);
+      }
+      return loadTemplateFile(args.template);
+    })
     .then((newTemplateString) => { templateString = newTemplateString; })
 
     // Parse params & tags

tests/create-stack/__snapshots__/create-stack-string-template.test.js.snap

@@ -0,0 +1,23 @@
+// Jest Snapshot v1, https://goo.gl/fbAQLP
+
+exports[`cfn-deploy should successfully create new stack 1`] = `
+Object {
+  "Capabilities": Array [],
+  "ChangeSetName": "cfn-deploy",
+  "ChangeSetType": "CREATE",
+  "Description": "Created with cfn-deploy",
+  "Parameters": Array [],
+  "StackName": "new-stack",
+  "Tags": Array [],
+  "TemplateBody": "Resources:
+  S3Bucket:
+    Type: AWS::S3::Bucket
+",
+}
+`;
+
+exports[`cfn-deploy should successfully create new stack 2`] = `
+Object {
+  "StackStatus": "REVIEW_IN_PROGRESS",
+}
+`;

tests/create-stack/create-stack-string-template.test.js

@@ -0,0 +1,22 @@
+const { readFileSync } = require('fs');
+const mockCreateStack = require('../mocks/createStack');
+const lib = require('../..');
+
+describe('cfn-deploy', () => {
+  beforeAll(() => mockCreateStack.beforeAll());
+
+  it('should successfully create new stack', (done) => {
+    const events = lib({
+      region: 'us-east-1',
+      stackname: 'new-stack',
+      templateString: readFileSync('./tests/templates/simple-template.yaml').toString(),
+    });
+    events.on('ERROR', (err) => done(err));
+    events.on('COMPLETE', (data) => {
+      expect(data).toMatchSnapshot();
+    });
+    events.on('FINALLY', done);
+  });
+
+  afterAll(() => mockCreateStack.afterAll());
+});

tests/update-stack/__snapshots__/update-stack-string-template.test.js.snap

@@ -0,0 +1,23 @@
+// Jest Snapshot v1, https://goo.gl/fbAQLP
+
+exports[`cfn-deploy should successfully create new stack 1`] = `
+Object {
+  "Capabilities": Array [],
+  "ChangeSetName": "cfn-deploy",
+  "ChangeSetType": "UPDATE",
+  "Description": "Created with cfn-deploy",
+  "Parameters": Array [],
+  "StackName": "existing-stack",
+  "Tags": Array [],
+  "TemplateBody": "Resources:
+  S3Bucket:
+    Type: AWS::S3::Bucket
+",
+}
+`;
+
+exports[`cfn-deploy should successfully create new stack 2`] = `
+Object {
+  "StackStatus": "UPDATE_COMPLETE",
+}
+`;

tests/update-stack/update-stack-string-template.test.js

@@ -0,0 +1,22 @@
+const { readFileSync } = require('fs');
+const mockCreateStack = require('../mocks/updateStack');
+const lib = require('../..');
+
+describe('cfn-deploy', () => {
+  beforeAll(() => mockCreateStack.beforeAll());
+
+  it('should successfully create new stack', (done) => {
+    const events = lib({
+      region: 'us-east-1',
+      stackname: 'existing-stack',
+      templateString: readFileSync('./tests/templates/simple-template.yaml').toString(),
+    });
+    events.on('ERROR', (err) => done(err));
+    events.on('COMPLETE', (data) => {
+      expect(data).toMatchSnapshot();
+    });
+    events.on('FINALLY', done);
+  });
+
+  afterAll(() => mockCreateStack.afterAll());
+});