throw error if only one argument supplied to eq

DanielJDufour · Nov 11, 2021 · 543ef13 · 543ef13
1 parent cacb2b8
commit 543ef13
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Showing 3 changed files with 13 additions and 1 deletion.
diff --git a/examples/test.only-one-arg.js b/examples/test.only-one-arg.js
@@ -0,0 +1,5 @@
+const test = require("../index.js");
+
+test("error", ({ eq }) => {
+  eq(1);
+});
diff --git a/index.js b/index.js
@@ -21,7 +21,10 @@ const complete = [];
 
 const run = async ({ name, cb, caller }) => {
   let savedActual, savedExpected;
-  const eq = (actual, expected) => {
+  const eq = function (actual, expected) {
+    if (arguments.length === 1) {
+      throw new Error("you only supplied one argument");
+    }
     savedActual = actual;
     savedExpected = expected;
     if (deepStrictEqual) {

diff --git a/test.js b/test.js
@@ -34,3 +34,7 @@ t("node ./examples/test.queue.js", "\x1B[32msuccess: first\x1B[0m\n\x1B[32msucce
 t("node ./examples/test.filename.js", "\x1B[33mskipped: invalid filename\x1B[39m\n\x1B[32msuccess: valid filename\x1B[0m\n");
 
 t("node ./examples/test.dir.js", "\x1B[33mskipped: invalid dir\x1B[39m\n\x1B[32msuccess: valid dir\x1B[0m\n");
+
+const cmd2 = "node ./examples/test.only-one-arg.js";
+const log2 = $(cmd2).trim().replace(/\n/g, "");
+assert.strictEqual(log2.includes("you only supplied one argument"), true);