From d1efffe96b4887dc429736e67426721e6fc2014d Mon Sep 17 00:00:00 2001
From: Ayke van Laethem <aykevanlaethem@gmail.com>
Date: Sat, 20 Apr 2019 17:00:52 +0200
Subject: [PATCH] test: print better error messages on compilation failure

---
 main_test.go | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/main_test.go b/main_test.go
index 80832288..b25708d6 100644
--- a/main_test.go
+++ b/main_test.go
@@ -13,6 +13,8 @@ import (
 	"runtime"
 	"sort"
 	"testing"
+
+	"github.com/tinygo-org/tinygo/loader"
 )
 
 const TESTDATA = "testdata"
@@ -121,7 +123,13 @@ func runTest(path, tmpdir string, target string, t *testing.T) {
 	binary := filepath.Join(tmpdir, "test")
 	err = Build("./"+path, binary, target, config)
 	if err != nil {
-		t.Log("failed to build:", err)
+		if errLoader, ok := err.(loader.Errors); ok {
+			for _, err := range errLoader.Errs {
+				t.Log("failed to build:", err)
+			}
+		} else {
+			t.Log("failed to build:", err)
+		}
 		t.Fail()
 		return
 	}