First draft with cli that runs all *.test.js files

.eslintignore

@@ -0,0 +1 @@
+.eslintrc.cjs

.eslintrc.cjs

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+const OFF = 0;
+const WARN = 1;
+const ERR = 2;
+
+module.exports = {
+    "env": {
+        "es2021": true,
+        "node": true
+    },
+    "extends": "eslint:recommended",
+    "parserOptions": {
+        "ecmaVersion": 12,
+        "sourceType": "module"
+    },
+    "rules": {
+        "indent": [ERR, 4],
+        "linebreak-style": [ERR, "unix"],
+        "quotes": [ERR, "double"],
+        "semi": [ERR, "never"],
+        "comma-dangle": [ERR, "always-multiline"],
+    },
+}

SumTestSuite.js

@@ -1,40 +0,0 @@
-'use strict';
-
-const assert = require('assert');
-const { sum } = require('./sum');
-
-class SumTestSuite {
-    testSumCorrectness() { 
-        const a = 1;
-        const b = 2;
-        const result = sum(a, b);
-        assert(result === a + b, 'the result should be the sum of its arguments');
-    }
-
-    testSumNoArgs() {
-        try {
-            sum();        
-        } catch {
-            return;
-        }
-        assert.fail('should fail if not provided any arguments');
-    }
-
-    testSumMissingArg() {
-        const a = 1;
-        try {
-            sum(a);        
-        } catch {
-            return;
-        }
-        assert.fail('should fail if not provided all arguments');
-    }
-
-    testWillFail() {
-        assert.fail('I have failed!');
-    }
-}
-
-module.exports = {
-    SumTestSuite,
-}

cli.js

@@ -0,0 +1,21 @@
+#!/usr/bin/env node
+
+import { discoverTestFiles } from "./src/discover.js"
+import { runTests } from "./src/suites.js"
+
+async function main() {
+    const testFilePaths = await discoverTestFiles()
+
+    for (const filePath of testFilePaths) {
+        const filePathParts = filePath.split("/")
+        const fileName = filePathParts[filePathParts.length - 1]
+        const suite = await import(`./${filePath}`)
+
+        console.log(`Running suite ${fileName}`)
+        console.log("-------------------------")
+        runTests(suite)
+        console.log("-------------------------")
+    }
+}
+
+main()

examples/commonjs/sum.cjs

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+"use strict"
+
+function sum(a, b) {
+    if (!a || !b) 
+        throw Error("gimme a number")
+
+    return a + b
+}
+
+module.exports = {
+    sum,
+} 

examples/commonjs/sum.test.cjs

@@ -0,0 +1,41 @@
+"use strict"
+
+const assert = require("assert")
+const { sum } = require("./sum.cjs")
+
+function testSumResult() {
+    const a = 1
+    const b = 2
+    const result = sum(a, b)
+    assert(result === a + b, "the result should be the sum of its arguments")
+}
+
+function testSumNoArgs() {
+    try {
+        sum()        
+    } catch (_) {
+        return
+    }
+    assert.fail("should fail if not provided any arguments")
+}
+
+function testSumMissingArg() {
+    const a = 1
+    try {
+        sum(a)        
+    } catch (_) {
+        return
+    }
+    assert.fail("should fail if not provided all arguments")
+}
+
+function testWillFail() {
+    assert.fail("I have failed!")
+}
+
+module.exports = {
+    testSumResult,
+    testSumNoArgs,
+    testSumMissingArg,
+    testWillFail,
+}

examples/modules/sum.js

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+export function sum(a, b) {
+    if (!a || !b) 
+        throw Error("gimme a number")
+
+    return a + b
+}

examples/modules/sum.test.js

@@ -0,0 +1,33 @@
+import { strict as assert } from "assert"
+
+import { sum } from "./sum.js"
+
+export function testSumResult() {
+    const a = 1
+    const b = 2
+    const result = sum(a, b)
+    assert(result === a + b, "the result should be the sum of its arguments")
+}
+
+export function testSumNoArgs() {
+    try {
+        sum()        
+    } catch (_) {
+        return
+    }
+    assert.fail("should fail if not provided any arguments")
+}
+
+export function testSumMissingArg() {
+    const a = 1
+    try {
+        sum(a)        
+    } catch (_) {
+        return
+    }
+    assert.fail("should fail if not provided all arguments")
+}
+
+export function testWillFail() {
+    assert.fail("I have failed!")
+}

examples/programmatic/sum.js

@@ -0,0 +1,6 @@
+export function sum(a, b) {
+    if (!a || !b) 
+        throw Error("gimme a number")
+
+    return a + b
+}

index.js

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+import { runTests } from "./src/suites.js"
+import { discoverTestFiles } from "./src/discover.js"
+
+export {
+    runTests,
+    discoverTestFiles,
+}

package.json

@@ -1,10 +1,24 @@
-{
-  "name": "js-test",
-  "version": "0.0.1",
-  "main": "index.js",
-  "scripts": {
-    "test": "echo \"Error: no test specified\" && exit 1"
-  },
-  "author": "BraydonKains",
-  "license": "MIT"
-}
+{
+  "name": "js-test",
+  "version": "0.0.1",
+  "main": "index.js",
+  "type": "module",
+  "scripts": {
+    "lint": "eslint .",
+    "lint:fix": "eslint --fix ."
+  },
+  "bin": {
+    "js-test": "./cli.js"
+  },
+  "author": {
+    "name": "BraydonKains",
+    "github": "https://github.com/BraydonKains"
+  },
+  "license": "MIT",
+  "devDependencies": {
+    "eslint": "^7.29.0"
+  },
+  "dependencies": {
+    "tiny-glob": "^0.2.9"
+  }
+}

runner.js

@@ -1,53 +0,0 @@
-'use strict';
-
-const tests = require('./sum.test');
-const { SumTestSuite } = require('./SumTestSuite');
-
-function runTestFile() {
-    const results = {};
-
-    Object.entries(tests).forEach(
-        ([_, testData]) => {
-            console.log(testData.description);
-            try {
-                testData.test();
-                console.log('SUCCESS');
-                
-                // FIXME no
-                results[testData.description] = null;
-            } catch (err) {
-                console.log('FAILED');
-                console.log(err.message);
-                results[testData.description] = err; 
-            }
-        }
-    );
-    
-    return results;
-}
-
-function runTestSuite() {
-    const suite = new SumTestSuite();
-    const suiteProto = Object.getPrototypeOf(suite)
-    const testMethodNames = 
-        Object.getOwnPropertyNames(suiteProto).filter(
-            prop => 
-                typeof suite[prop] === 'function' &&
-                prop.startsWith('test')
-        );
-
-    testMethodNames.forEach(
-        testMethodName => {
-            console.log(testMethodName);
-            try {
-                suite[testMethodName]();
-                console.log('SUCCESS');
-            } catch (err) {
-                console.log('FAILED');
-                console.log(err.message);
-            }
-        }
-    );
-}
-
-runTestSuite();

src/discover.js

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+import { default as glob } from "tiny-glob"
+
+export async function discoverTestFiles(options) {
+    const pattern = options?.pattern || "**/*.test.{js,cjs,mjs}"
+    const directory = options?.directory || "."
+
+    const files = await glob(pattern, {
+        cwd: directory,
+    })
+    const importUrls = files.map(f => f.replace("\\", "/")) // Silly Windows!
+    return importUrls
+}

src/suites.js

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+import { getMethodNames } from "./util.js"
+
+export function runTests(suite) {
+    const testMethodNames = getMethodNames(suite)
+
+    testMethodNames.forEach(
+        testMethodName => {
+            console.log(testMethodName)
+            try {
+                suite[testMethodName]()
+                console.log("SUCCESS")
+            } catch (err) {
+                console.log("FAILED")
+                console.log(err.message)
+            }
+        },
+    )
+}

src/util.js

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+export const getMethodNames = (obj) => 
+    Object.getOwnPropertyNames(obj).filter(
+        prop => 
+            prop.startsWith("test") &&
+            typeof obj[prop] === "function",
+    )

sum.js

@@ -1,8 +0,0 @@
-'use strict';
-
-module.exports.sum = (a, b) => {
-    if (!a || !b) 
-        throw Error('gimme a number');
-
-    return a + b;
-}

sum.test.js

@@ -1,58 +0,0 @@
-'use strict';
-
-const assert = require('assert');
-const { sum } = require('./sum');
-
-const test = (description, testProcedure) => ({
-    description,
-    test: testProcedure,
-});
-
-const testSumCorrectness = test(
-    '#sum should return the sum of its arguments', 
-    () => { 
-        const a = 1;
-        const b = 2;
-        const result = sum(a, b);
-        assert(result === a + b, 'the result should be the sum of its arguments');
-    }
-);
-
-const testSumNoArgs = test(
-    '#sum should throw an error if no arguments are passed',
-    () => {
-        try {
-            sum();        
-        } catch {
-            return;
-        }
-        assert.fail('should fail if not provided any arguments');
-    }
-);
-
-const testSumMissingArg = test(
-    '#sum should throw an error if no arguments are passed',
-    () => {
-        const a = 1;
-        try {
-            sum(a);        
-        } catch {
-            return;
-        }
-        assert.fail('should fail if not provided all arguments');
-    }
-);
-
-const testWillFail = test(
-    '#sum will fail against its will',
-    () => {
-        assert.fail('I have failed!');
-    }
-);
-
-module.exports = {
-    testSumCorrectness,
-    testSumNoArgs,
-    testSumMissingArg,
-    testWillFail,
-};