From 9b3c44b6f31e2aa221101adb310f2ddbb9c64ab6 Mon Sep 17 00:00:00 2001
From: Oleksandr Denysenko <oleksandr.denysenko@oracle.com>
Date: Mon, 11 Apr 2022 11:20:28 +0300
Subject: [PATCH] Add source files

---
 .jshintrc      |  3 +++
 README.md      |  3 +++
 package.json   | 25 +++++++++++++++++++++
 test-runner.js | 60 ++++++++++++++++++++++++++++++++++++++++++++++++++
 tester.js      | 20 +++++++++++++++++
 tester.test.js | 19 ++++++++++++++++
 6 files changed, 130 insertions(+)
 create mode 100644 .jshintrc
 create mode 100644 README.md
 create mode 100644 package.json
 create mode 100644 test-runner.js
 create mode 100644 tester.js
 create mode 100644 tester.test.js

diff --git a/.jshintrc b/.jshintrc
new file mode 100644
index 0000000..18d2fcc
--- /dev/null
+++ b/.jshintrc
@@ -0,0 +1,3 @@
+{
+  "esversion": 11
+}
\ No newline at end of file
diff --git a/README.md b/README.md
new file mode 100644
index 0000000..96de7bf
--- /dev/null
+++ b/README.md
@@ -0,0 +1,3 @@
+# Primitive test engine for JavaScript
+
+Example `./tester.test.js`
diff --git a/package.json b/package.json
new file mode 100644
index 0000000..38344da
--- /dev/null
+++ b/package.json
@@ -0,0 +1,25 @@
+{
+  "name": "js-test-tools",
+  "version": "1.0.0",
+  "description": "Primitive test tools for JavaScript",
+	"type": "module",
+  "main": "test-runner.js",
+  "scripts": {
+    "test": "node tester.test.js"
+  },
+  "repository": {
+    "type": "git",
+    "url": "git+https://github.com/abyr/js-test-tools.git"
+  },
+  "keywords": [
+    "js",
+    "unit",
+    "test"
+  ],
+  "author": "Oleksandr Denysenko",
+  "license": "MIT",
+  "bugs": {
+    "url": "https://github.com/abyr/js-test-tools/issues"
+  },
+  "homepage": "https://github.com/abyr/js-test-tools#readme"
+}
diff --git a/test-runner.js b/test-runner.js
new file mode 100644
index 0000000..e58455c
--- /dev/null
+++ b/test-runner.js
@@ -0,0 +1,60 @@
+import * as path from "path";
+import * as util from "util";
+
+function group(name, tests) {
+    const relativeFilenameOrName = relativeFilename(name);
+
+    console.log(infoStr(relativeFilenameOrName));
+    console.group();
+    tests();
+    console.groupEnd();
+}
+
+const test = function (title, fn) {
+    const end = result(title);
+
+    try {
+        const fnRes = fn();
+
+        if (util.types.isPromise(fnRes)) {
+            fnRes.then(end).catch(end);
+        } else {
+            end();
+        }
+    } catch (err) {
+        end(err);
+    }
+};
+
+const result = title => err => {
+    if (err instanceof Error) {
+        console.log(``);
+        console.log(errorStr(`✖ ${title}`));
+        console.error(err.actual || err);
+    } else {
+        console.log(successStr(`✔ ${title}`));
+    }
+};
+
+function relativeFilename(filename) {
+    return path.relative(process.cwd(), filename);
+}
+
+const STR_GREEN = "\x1b[32m";
+const STR_RED = "\x1b[31m";
+const STR_YELLOW = "\x1b[33m";
+const STR_RESET = "\x1b[0m";
+
+function successStr(text) {
+    return "".concat(STR_GREEN).concat(text).concat(STR_RESET);
+}
+
+function infoStr(text) {
+    return "".concat(STR_YELLOW).concat(text).concat(STR_RESET);
+}
+
+function errorStr(text) {
+    return "".concat(STR_RED).concat(text).concat(STR_RESET);
+}
+
+export { group, test };
diff --git a/tester.js b/tester.js
new file mode 100644
index 0000000..9d99ec3
--- /dev/null
+++ b/tester.js
@@ -0,0 +1,20 @@
+const tester = {
+
+    fail: function(msg) {
+        throw new Error('fail(): ' + msg);
+    },
+
+    assert: function(value, msg) {
+        if (!value) {
+            throw new Error('assert(): ' + msg);
+        }
+    },
+
+    equals: function(expected, actual) {
+        if (expected !== actual) {
+            throw new Error('assertEquals() "' + expected + '" not equals "' + actual + '"');
+        }
+    }
+};
+
+export default tester;
diff --git a/tester.test.js b/tester.test.js
new file mode 100644
index 0000000..0734292
--- /dev/null
+++ b/tester.test.js
@@ -0,0 +1,19 @@
+import { fileURLToPath } from 'url';
+import { group, test } from './test-runner.js';
+import tester from './tester.js';
+
+const filePath = fileURLToPath(import.meta.url);
+
+export default group(`${filePath}: self test`, () => {
+    test('assert', () => {
+        tester.assert(1);
+        tester.assert(1 == '1');
+        tester.assert(true);
+        tester.assert(!false);
+    });
+    test('equals', () => {        
+        tester.equals('1', '1');
+        tester.equals(true, !!1);
+        tester.equals(1, Number('1'));
+    });
+});