Add tests - fixes #1

.gitignore

@@ -1,2 +1,3 @@
 node_modules
 dist
+.nyc_output

package.json

@@ -14,8 +14,9 @@
 		"node": ">=10"
 	},
 	"scripts": {
-		"test": "xo",
-		"compile": "tsc -p ."
+		"pretest": "npm run compile -- -p tsconfig.spec.json",
+		"test": "xo && nyc ava",
+		"compile": "del-cli dist && tsc"
 	},
 	"files": [
 		"dist"
@@ -42,10 +43,29 @@
 		"got": "^11.3.0"
 	},
 	"devDependencies": {
+		"@ava/typescript": "^1.1.1",
 		"@sindresorhus/tsconfig": "^0.7.0",
 		"@types/aws4": "^1.5.1",
+		"@types/sinon": "^9.0.4",
+		"ava": "^3.10.1",
 		"aws-sdk": "^2.700.0",
+		"del-cli": "^3.0.1",
+		"nock": "^13.0.2",
+		"nyc": "^15.1.0",
+		"sinon": "^9.0.2",
 		"typescript": "^3.9.5",
 		"xo": "^0.32.0"
+	},
+	"ava": {
+		"typescript": {
+			"rewritePaths": {
+				"source/": "dist/"
+			}
+		}
+	},
+	"nyc": {
+		"exclude": [
+			"source/test.ts"
+		]
 	}
 }

source/test.ts

@@ -0,0 +1,103 @@
+import test from 'ava';
+import * as nock from 'nock';
+import * as sinon from 'sinon';
+import {Response} from 'got';
+import got4aws from '.';
+
+process.env.AWS_ACCESS_KEY_ID = 'unicorn';
+process.env.AWS_SECRET_ACCESS_KEY = 'rainbow';
+
+const extractHeaders = (response: Response) => ({
+	'X-Amz-Date': response.request.options.headers['X-Amz-Date'],
+	Authorization: response.request.options.headers.Authorization
+});
+
+let clock: sinon.SinonFakeTimers;
+
+test.before(() => {
+	clock = sinon.useFakeTimers(new Date('2020-07-01T10:00:00Z'));
+
+	nock('http://www.example.com')
+		.get('/resource')
+		.reply(200, '{"unicorn":"🦄"}')
+		.persist();
+
+	nock('https://rainbow.execute-api.eu-west-1.amazonaws.com')
+		.get('/v0')
+		.reply(200, '{"rainbow":"🌈"}')
+		.persist();
+});
+
+test.after(() => {
+	clock.restore();
+});
+
+test('parse response as `json` by default', async t => {
+	const got = got4aws();
+
+	const result = await got('http://www.example.com/resource');
+
+	t.deepEqual(result.body as unknown, {
+		unicorn: '🦄'
+	});
+});
+
+test('override `responseType`', async t => {
+	const got = got4aws();
+
+	const result = await got('http://www.example.com/resource', {
+		responseType: 'text'
+	});
+
+	t.is(result.body, '{"unicorn":"🦄"}');
+});
+
+test('provide service option', async t => {
+	const got = got4aws({
+		service: 'execute-api'
+	});
+
+	const result = await got('http://www.example.com/resource');
+
+	t.deepEqual(extractHeaders(result), {
+		'X-Amz-Date': '20200701T100000Z',
+		Authorization: 'AWS4-HMAC-SHA256 Credential=unicorn/20200701/us-east-1/execute-api/aws4_request, SignedHeaders=accept;accept-encoding;host;user-agent;x-amz-date, Signature=b6c4ab33c3992fca1f90e5003be094a468eb71655f3891c98aec815b60ceaa23'
+	});
+
+	t.deepEqual(result.body as unknown, {
+		unicorn: '🦄'
+	});
+});
+
+test('provide region option', async t => {
+	const got = got4aws({
+		service: 'execute-api',
+		region: 'eu-west-1'
+	});
+
+	const result = await got('http://www.example.com/resource');
+
+	t.deepEqual(extractHeaders(result), {
+		'X-Amz-Date': '20200701T100000Z',
+		Authorization: 'AWS4-HMAC-SHA256 Credential=unicorn/20200701/eu-west-1/execute-api/aws4_request, SignedHeaders=accept;accept-encoding;host;user-agent;x-amz-date, Signature=2f30e9cec0e1429031f846074642b0f247b61c36e51159385057bbfb18e10fc4'
+	});
+
+	t.deepEqual(result.body as unknown, {
+		unicorn: '🦄'
+	});
+});
+
+test('infer service and region', async t => {
+	const got = got4aws();
+
+	const result = await got('https://rainbow.execute-api.eu-west-1.amazonaws.com/v0');
+
+	t.deepEqual(extractHeaders(result), {
+		'X-Amz-Date': '20200701T100000Z',
+		Authorization: 'AWS4-HMAC-SHA256 Credential=unicorn/20200701/eu-west-1/execute-api/aws4_request, SignedHeaders=accept;accept-encoding;host;user-agent;x-amz-date, Signature=f41b94660fa4d74b99058b4e6754cb28e33c2c1cf6ddfea4cc96826cd5d65a63'
+	});
+
+	t.deepEqual(result.body as unknown, {
+		rainbow: '🌈'
+	});
+});

tsconfig.json

@@ -11,5 +11,8 @@
 	},
 	"include": [
 		"source"
+	],
+	"exclude": [
+		"source/test.ts"
 	]
 }

tsconfig.spec.json

@@ -0,0 +1,10 @@
+{
+	"extends": "./tsconfig.json",
+	"compilerOptions": {
+		"sourceMap": true
+	},
+	"include": [
+		"source"
+	],
+	"exclude": []
+}