From bfde536fa86056fa8e3c8bcf2b162b416f7cd6c0 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Gustaf=20R=C3=A4ntil=C3=A4?= <g.rantila@gmail.com>
Date: Mon, 29 Jul 2019 13:55:22 +0200
Subject: [PATCH] fix(jest): Forced jest 20 (later interfere with unhandled
 exception warnings)

Also improved code coverage
---
 package.json          |  4 +-
 test/register.spec.js | 85 +++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 87 insertions(+), 2 deletions(-)

diff --git a/package.json b/package.json
index 342ace2..42dd44f 100644
--- a/package.json
+++ b/package.json
@@ -49,14 +49,14 @@
     "haxec": "^1.1.0"
   },
   "devDependencies": {
-    "@types/jest": "^20",
+    "@types/jest": "20.0.8",
     "@types/node": "^12",
     "already": "^1.8.0",
     "commitizen": "^3",
     "concurrently": "^4.1.1",
     "coveralls": "^3",
     "cz-conventional-changelog": "^2",
-    "jest": "^20",
+    "jest": "20.0.4",
     "rimraf": "^2.6.3",
     "rollup": "^1.16.3",
     "semantic-release": "^15.13.18",
diff --git a/test/register.spec.js b/test/register.spec.js
index 60a33ea..817df49 100644
--- a/test/register.spec.js
+++ b/test/register.spec.js
@@ -105,4 +105,89 @@ describe( "register", ( ) =>
 		expect( linesWoLocation.length ).toBeGreaterThanOrEqual( 2 );
 		expect( linesWoLocation[ 0 ] ).toBe( linesWoLocation[ 1 ] );
 	} ) );
+
+	it( "Handle throwing in <new Promise>", withConsoleSpy( async ( ) =>
+	{
+		const err = new Error( "the error" );
+
+		new Promise( ( resolve, reject ) =>
+		{
+			throw err;
+		} );
+
+		await triggerUnhandledWarnings( );
+
+		const linesWoColumns = splitLines( console.error.mock.calls[ 0 ] )
+			.filter( line => line.includes( "register.spec.js" ) )
+			.map( line => cutColumn( line ) );
+
+		const linesWoLocation = splitLines( console.error.mock.calls[ 0 ] )
+			.filter( line => line.includes( "register.spec.js" ) )
+			.map( line => cutLocation( line ) );
+
+		expect( linesWoColumns.length ).toBeGreaterThanOrEqual( 2 );
+		expect( linesWoColumns[ 0 ] ).not.toBe( linesWoColumns[ 1 ] );
+
+		expect( linesWoLocation.length ).toBeGreaterThanOrEqual( 2 );
+		expect( linesWoLocation[ 0 ] ).toBe( linesWoLocation[ 1 ] );
+	} ) );
+
+	it( "Handle error without stack", withConsoleSpy( async ( ) =>
+	{
+		const err = new Error( "the error" );
+		delete err.stack;
+
+		new Promise( ( resolve, reject ) =>
+		{
+			throw err;
+		} );
+
+		await triggerUnhandledWarnings( );
+
+		const linesWoColumns = splitLines( console.error.mock.calls[ 0 ] )
+			.filter( line => line.includes( "register.spec.js" ) )
+			.map( line => cutColumn( line ) );
+
+		const errorAndShared = splitLines( console.error.mock.calls[ 0 ] )
+			.filter( line => line );
+
+		expect( linesWoColumns.length ).toBeGreaterThanOrEqual( 2 );
+		expect( linesWoColumns[ 0 ] ).not.toBe( linesWoColumns[ 1 ] );
+
+		expect( errorAndShared[ errorAndShared.length - 2 ] ).toBe(
+			"    ==== Error at: ===================="
+		);
+		expect( errorAndShared[ errorAndShared.length - 1 ] ).toBe(
+			"    ==== Shared trace: ================"
+		);
+	} ) );
+
+	it( "Handle null error", withConsoleSpy( async ( ) =>
+	{
+		const err = null;
+
+		new Promise( ( resolve, reject ) =>
+		{
+			throw err;
+		} );
+
+		await triggerUnhandledWarnings( );
+
+		const linesWoColumns = splitLines( console.error.mock.calls[ 0 ] )
+			.filter( line => line.includes( "register.spec.js" ) )
+			.map( line => cutColumn( line ) );
+
+		const errorAndShared = splitLines( console.error.mock.calls[ 0 ] )
+			.filter( line => line );
+
+		expect( linesWoColumns.length ).toBeGreaterThanOrEqual( 2 );
+		expect( linesWoColumns[ 0 ] ).not.toBe( linesWoColumns[ 1 ] );
+
+		expect( errorAndShared[ errorAndShared.length - 2 ] ).toBe(
+			"    ==== Error at: ===================="
+		);
+		expect( errorAndShared[ errorAndShared.length - 1 ] ).toBe(
+			"    ==== Shared trace: ================"
+		);
+	} ) );
 } );