internal/report/console/console.go

@@ -10,6 +10,7 @@ import (
 	"github.com/jedib0t/go-pretty/v6/table"
 	"github.com/jedib0t/go-pretty/v6/text"
 	"github.com/rs/zerolog/log"
+	"github.com/sergi/go-diff/diffmatchpatch"
 	"gitlab.com/TECHNOFAB/nixtest/internal/types"
 	"gitlab.com/TECHNOFAB/nixtest/internal/util"
 )
@@ -24,11 +25,17 @@ func PrintErrors(results types.Results, noColor bool) {
 			fmt.Println(text.FgRed.Sprintf("⚠ Test \"%s/%s\" failed:", result.Spec.Suite, result.Spec.Name))
 			message := result.ErrorMessage
 			if result.Status == types.StatusFailure && message == "" {
+				if noColor {
 					var err error
 					message, err = util.ComputeDiff(result.Expected, result.Actual)
 					if err != nil {
 						log.Panic().Err(err).Msg("failed to compute diff")
 					}
+				} else {
+					dmp := diffmatchpatch.New()
+					diffs := dmp.DiffMain(result.Expected, result.Actual, true)
+					message = fmt.Sprintf("Diff:\n%s", dmp.DiffPrettyText(diffs))
+				}
 			}
 
 			if message == "" {

lib/scriptHelpers.sh

@@ -11,16 +11,16 @@ function assert_not_eq() {
   assert "$1 -ne $2" "$3"
 }
 function assert_contains() {
-  echo -n "$1" | grep -q -- "$2" || {
+  echo "$1" | grep -q -- "$2" || {
-    echo "Assertion failed: $3. The following does not contain $2: $1" >&2;
+    echo "Assertion failed: $3. $1 does not contain $2" >&2;
     exit 1;
   }
 }
 function assert_not_contains() {
-  echo -n "$1" | grep -q -- "$2" && {
+  echo "$1" | grep -q -- "$2" && {
-    echo "Assertion failed: $3. The following does contain $2: $1" >&2;
+    echo "Assertion failed: $3. $1 does contain $2" >&2;
     exit 1;
-  } || true
+  }
 }
 function assert_file_contains() {
   grep -q -- "$2" $1 || {