Adding upstream version 3.5.1.

Signed-off-by: Daniel Baumann <daniel@debian.org>

error_test.go

@@ -0,0 +1,54 @@
+package archiver_test
+
+import (
+	"errors"
+	"fmt"
+	"os"
+	"testing"
+
+	"github.com/mholt/archiver/v3"
+)
+
+func TestIllegalPathErrorString(t *testing.T) {
+	tests := []struct {
+		instance *archiver.IllegalPathError
+		expected string
+	}{
+		{instance: &archiver.IllegalPathError{Filename: "foo.txt"}, expected: "illegal file path: foo.txt"},
+		{instance: &archiver.IllegalPathError{AbsolutePath: "/tmp/bar.txt", Filename: "bar.txt"}, expected: "illegal file path: bar.txt"},
+	}
+
+	for i, test := range tests {
+		test := test
+
+		t.Run(fmt.Sprintf("Case %d", i), func(t *testing.T) {
+			if test.expected != test.instance.Error() {
+				t.Fatalf("Excepected '%s', but got '%s'", test.expected, test.instance.Error())
+			}
+		})
+	}
+}
+
+func TestIsIllegalPathError(t *testing.T) {
+	tests := []struct {
+		instance error
+		expected bool
+	}{
+		{instance: nil, expected: false},
+		{instance: os.ErrNotExist, expected: false},
+		{instance: fmt.Errorf("some error"), expected: false},
+		{instance: errors.New("another error"), expected: false},
+		{instance: &archiver.IllegalPathError{Filename: "foo.txt"}, expected: true},
+	}
+
+	for i, test := range tests {
+		test := test
+
+		t.Run(fmt.Sprintf("Case %d", i), func(t *testing.T) {
+			actual := archiver.IsIllegalPathError(test.instance)
+			if actual != test.expected {
+				t.Fatalf("Excepected '%v', but got '%v'", test.expected, actual)
+			}
+		})
+	}
+}