package spacecollapse import ( "fmt" "strings" "testing" "github.com/stretchr/testify/require" ) func TestCollapseSpaces(t *testing.T) { for i, tc := range []struct { input string output string }{ {input: "", output: ""}, {input: "x", output: "x"}, {input: "Hello, World!", output: "Hello, World!"}, {input: "Привет,\tМир!", output: "Привет, Мир!"}, {input: "\r\n", output: " "}, {input: "\n\n", output: " "}, {input: "\t*", output: " *"}, {input: " \t \t ", output: " "}, {input: " \tx\t ", output: " x "}, {input: "\xff\x00 \xff\x00", output: "\xef\xbf\xbd\x00 \xef\xbf\xbd\x00"}, } { t.Run(fmt.Sprintf("#%v: %v", i, tc.input), func(t *testing.T) { require.Equal(t, tc.output, CollapseSpaces(tc.input)) }) } } func BenchmarkCollapse(b *testing.B) { input := strings.Repeat("🙂 🙂", 100) b.ReportAllocs() for i := 0; i < b.N; i++ { _ = CollapseSpaces(input) } }