Function TestStringEscaping

proto/text_test.go:520–564

(t *testing.T)

}

func TestStringEscaping(t *testing.T) {
	testCases := []struct {
		in  *pb2.Strings
		out string
	}{
		{
			// Test data from C++ test (TextFormatTest.StringEscape).
			// Single divergence: we don't escape apostrophes.
			&pb2.Strings{StringField: proto.String("\"A string with ' characters \n and \r newlines and \t tabs and \001 slashes \\ and  multiple   spaces")},
			"string_field: \"\\\"A string with ' characters \\n and \\r newlines and \\t tabs and \\001 slashes \\\\ and  multiple   spaces\"\n",
		},
		{
			// Test data from the same C++ test.
			&pb2.Strings{StringField: proto.String("\350\260\267\346\255\214")},
			"string_field: \"\\350\\260\\267\\346\\255\\214\"\n",
		},
		{
			// Some UTF-8.
			&pb2.Strings{StringField: proto.String("\x00\x01\xff\x81")},
			`string_field: "\000\001\377\201"` + "\n",
		},
	}

	for _, tc := range testCases {
		t.Run("", func(t *testing.T) {
			var buf bytes.Buffer
			if err := proto.MarshalText(&buf, tc.in); err != nil {
				t.Fatalf("proto.MarsalText error: %v", err)
			}
			got := buf.String()
			if got != tc.out {
				t.Fatalf("want:\n%s\n\nwant:\n%s", got, tc.out)
			}

			// Check round-trip.
			pb := new(pb2.Strings)
			if err := proto.UnmarshalText(got, pb); err != nil {
				t.Fatalf("proto.UnmarshalText error: %v", err)
			}
			if !proto.Equal(pb, tc.in) {
				t.Fatalf("proto.Equal mismatch:\ngot:\n%v\n\nwant:\n%v", pb, tc.in)
			}
		})
	}
}

// A limitedWriter accepts some output before it fails.
// This is a proxy for something like a nearly-full or imminently-failing disk,