Set a tolerance for a unit test because the number of proteins change…

…s slightly from version to version.

lib/dat/dat_test.go

@@ -2,6 +2,7 @@ package dat_test
 
 import (
 	"github.com/Nesvilab/philosopher/lib/fas"
+	"math"
 	"testing"
 
 	. "github.com/Nesvilab/philosopher/lib/dat"
@@ -68,8 +69,8 @@ func TestBase_ProcessDB(t *testing.T) {
 	for _, tt := range tests {
 		t.Run(tt.name, func(t *testing.T) {
 			len_records := ParseFile(tt.args.file, make(chan<- []fas.FastaEntry, 1024))
-			if len_records != 20413 {
-				t.Errorf("Number of FASTA entries is incorrect, got %d, want %d", len_records, 20413)
+			if math.Abs(float64(len_records-20413)) > 100 {
+				t.Errorf("Number of FASTA entries is incorrect, got %d, want around %d", len_records, 20413)
 			}
 		})
 	}