More tests.

conn_test.go

@@ -1,6 +1,7 @@
 package sqlite3_test
 
 import (
+	"errors"
 	"os"
 	"path/filepath"
 	"testing"
@@ -23,6 +24,23 @@ func TestOpen_file(t *testing.T) {
 	testOpen(t, filepath.Join(dir, "test.db"))
 }
 
+func TestOpen_dir(t *testing.T) {
+	_, err := sqlite3.Open(".")
+	if err == nil {
+		t.Fatal("want error")
+	}
+	var serr *sqlite3.Error
+	if !errors.As(err, &serr) {
+		t.Fatal("want sqlite3.Error")
+	}
+	if serr.Code != sqlite3.CANTOPEN {
+		t.Fatal("want sqlite3.CANTOPEN")
+	}
+	if got := err.Error(); got != "sqlite3: unable to open database file" {
+		t.Fatal("got message: ", got)
+	}
+}
+
 func testOpen(t *testing.T, name string) {
 	db, err := sqlite3.Open(name)
 	if err != nil {
@@ -51,17 +69,17 @@ func testOpen(t *testing.T, name string) {
 	idx := 0
 	for ; stmt.Step(); idx++ {
 		if ids[idx] != stmt.ColumnInt(0) {
-			t.Errorf("expected %d got %d", ids[idx], stmt.ColumnInt(0))
+			t.Errorf("want %d got %d", ids[idx], stmt.ColumnInt(0))
 		}
 		if names[idx] != stmt.ColumnText(1) {
-			t.Errorf("expected %q got %q", names[idx], stmt.ColumnText(1))
+			t.Errorf("want %q got %q", names[idx], stmt.ColumnText(1))
 		}
 	}
 	if err := stmt.Err(); err != nil {
 		t.Fatal(err)
 	}
 	if idx != 3 {
-		t.Errorf("expected %d rows got %d", len(ids), idx)
+		t.Errorf("want %d rows got %d", len(ids), idx)
 	}
 
 	err = stmt.Close()