From a0179489c805bd4125f830943661638c1406e68f Mon Sep 17 00:00:00 2001
From: "Paulo F. Oliveira" <paulo.ferraz.oliveira@gmail.com>
Date: Mon, 22 Mar 2021 00:37:59 +0000
Subject: [PATCH] Test unavailable Elixir upon mix

---
 __tests__/setup-beam.test.js | 18 ++++++++++++++++++
 dist/index.js                | 16 ++++++++++++++--
 src/setup-beam.js            | 16 ++++++++++++++--
 3 files changed, 46 insertions(+), 4 deletions(-)

diff --git a/__tests__/setup-beam.test.js b/__tests__/setup-beam.test.js
index df603543..61671f99 100644
--- a/__tests__/setup-beam.test.js
+++ b/__tests__/setup-beam.test.js
@@ -42,6 +42,24 @@ async function test() {
     },
     `Installing rebar3 ${r3Version} is supposed to fail`)
 
+  await assert.rejects(
+    async () => {
+      await setupElixir.mixRebar()
+    },
+    (err) => {
+      assert.ok(err instanceof Error); return true
+    },
+    `Mixing rebar without Elixir is supposed to fail`)
+
+  await assert.rejects(
+    async () => {
+      await setupElixir.mixHex()
+    },
+    (err) => {
+      assert.ok(err instanceof Error); return true
+    },
+    `Mixing Hex without Elixir is supposed to fail`)
+
   getOTPVersion({
     spec: '19.3.x', osVersion: 'ubuntu-16.04',
     expected: 'OTP-19.3.6',
diff --git a/dist/index.js b/dist/index.js
index 0db6c119..93491b73 100644
--- a/dist/index.js
+++ b/dist/index.js
@@ -4014,13 +4014,23 @@ function maybeInstallElixir(otpVersion, elixirBuildsListing) {
 
 async function mixRebar() {
   if (core.getInput('install-rebar') !== false) {
-    await exec('mix local.rebar --force')
+    const cmd = 'mix local.rebar --force'
+    await exec(cmd)
+      .catch((err) => {
+        core.error(`${cmd} failed`)
+        throw new Error(err)
+      })
   }
 }
 
 async function mixHex() {
   if (core.getInput('install-hex') !== false) {
-    await exec('mix local.hex --force')
+    const cmd = 'mix local.hex --force'
+    await exec(cmd)
+      .catch((err) => {
+        core.error(`${cmd} failed`)
+        throw new Error(err)
+      })
   }
 }
 
@@ -4170,6 +4180,8 @@ module.exports = {
   getOTPVersion: getOTPVersion,
   getElixirVersion: getElixirVersion,
   getRebar3Version: getRebar3Version,
+  mixRebar: mixRebar,
+  mixHex: mixHex,
 }
 
 
diff --git a/src/setup-beam.js b/src/setup-beam.js
index 7a5bf58c..0652a321 100644
--- a/src/setup-beam.js
+++ b/src/setup-beam.js
@@ -66,13 +66,23 @@ function maybeInstallElixir(otpVersion, elixirBuildsListing) {
 
 async function mixRebar() {
   if (core.getInput('install-rebar') !== false) {
-    await exec('mix local.rebar --force')
+    const cmd = 'mix local.rebar --force'
+    await exec(cmd)
+      .catch((err) => {
+        core.error(`${cmd} failed`)
+        throw new Error(err)
+      })
   }
 }
 
 async function mixHex() {
   if (core.getInput('install-hex') !== false) {
-    await exec('mix local.hex --force')
+    const cmd = 'mix local.hex --force'
+    await exec(cmd)
+      .catch((err) => {
+        core.error(`${cmd} failed`)
+        throw new Error(err)
+      })
   }
 }
 
@@ -222,4 +232,6 @@ module.exports = {
   getOTPVersion: getOTPVersion,
   getElixirVersion: getElixirVersion,
   getRebar3Version: getRebar3Version,
+  mixRebar: mixRebar,
+  mixHex: mixHex,
 }