go-eol/readthiseol_test.go

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2023-11-29 18:18:09 +00:00
package eol_test
import (
"testing"
"io"
"strings"
"sourcecode.social/reiver/go-utf8"
"sourcecode.social/reiver/go-eol"
)
func TestReadThisEOL(t *testing.T) {
tests := []struct{
Value string
EOL string
}{
{
Value: "\n",
EOL: "\n",
},
{
Value: "\r",
EOL: "\r",
},
{
Value: "\r\n",
EOL: "\r\n",
},
{
Value: "\u0085",
EOL: "\u0085",
},
{
Value: "\u2028",
EOL: "\u2028",
},
{
Value: "\n" + "12345",
EOL: "\n",
},
{
Value: "\r" + "12345",
EOL: "\r",
},
{
Value: "\r\n" + "12345",
EOL: "\r\n",
},
{
Value: "\u0085" + "12345",
EOL: "\u0085",
},
{
Value: "\u2028" + "12345",
EOL: "\u2028",
},
{
Value: "\n" + "12345" + "\n",
EOL: "\n",
},
{
Value: "\r" + "12345" + "\r",
EOL: "\r",
},
{
Value: "\r\n" + "12345" + "\r\n",
EOL: "\r\n",
},
{
Value: "\u0085" + "12345" + "\u0085",
EOL: "\u0085",
},
{
Value: "\u2028" + "12345" + "\u2028",
EOL: "\u2028",
},
}
for testNumber, test := range tests {
var reader io.Reader = strings.NewReader(test.Value)
var runescanner io.RuneScanner = utf8.NewRuneScanner(reader)
actualNumRead, err := eol.ReadThisEOL(runescanner, test.EOL)
if nil != err {
t.Errorf("For test #%d, did not expect an error but actually got one.", testNumber)
t.Logf("ERROR: (%T) %s", err, err)
t.Logf("EOL: %q", test.EOL)
t.Logf("VALUE: %q", test.Value)
continue
}
{
var expected int = len(test.EOL)
var actual int = actualNumRead
if expected != actual {
t.Errorf("For tst #%d, the actual number-of-bytes-read is not what was expected." , testNumber)
t.Logf("EXPECTED: %d", expected)
t.Logf("ACTUAL: %d", actual)
t.Logf("EOL: %q", test.EOL)
t.Logf("VALUE: %q", test.Value)
continue
}
}
}
}
func TestReadThisEOL_fail(t *testing.T) {
tests := []struct{
Value string
EOL string
ExpectedError string
ExpectedNumRead int
}{
{
Value: "",
EOL: "\n",
ExpectedError: `eol: problem reading character №1 of end-of-line sequence "\n": EOF`,
},
{
Value: "",
EOL: "\r",
ExpectedError: `eol: problem reading character №1 of end-of-line sequence "\r": EOF`,
},
{
Value: "",
EOL: "\r\n",
ExpectedError: `eol: problem reading character №1 of end-of-line sequence "\r\n": EOF`,
},
{
Value: "",
EOL: "\u0085",
ExpectedError: `eol: problem reading character №1 of end-of-line sequence "\u0085": EOF`,
},
{
Value: "",
EOL: "\u2028",
ExpectedError: `eol: problem reading character №1 of end-of-line sequence "\u2028": EOF`,
},
{
Value: "\n",
EOL: "\r",
ExpectedError: `eol: carriage-return (CR) character ('\r') (U+000D) not found for end-of-line sequence "\r" character №1 — instead found '\n' (U+000A)`,
},
{
Value: "\n",
EOL: "\r\n",
ExpectedError: `eol: carriage-return (CR) character ('\r') (U+000D) not found for end-of-line sequence "\r\n" character №1 — instead found '\n' (U+000A)`,
},
{
Value: "\n",
EOL: "\u0085",
ExpectedError: `eol: next-line (NEL) character (U+0085) not found for end-of-line sequence "\u0085" character №1 — instead found '\n' (U+000A)`,
},
{
Value: "\n",
EOL: "\u2028",
ExpectedError: `eol: line-separator (LS) character (U+2028) not found for end-of-line sequence "\u2028" character №1 — instead found '\n' (U+000A)`,
},
{
Value: "\r",
EOL: "\n",
ExpectedError: `eol: line-feed (LF) character ('\n') (U+000A) not found for end-of-line sequence "\n" character №1 — instead found '\r' (U+000D)`,
},
{
Value: "\r",
EOL: "\r\n",
ExpectedError: `eol: problem reading character №2 of end-of-line sequence "\r\n": EOF`,
ExpectedNumRead: 1,
},
{
Value: "\r",
EOL: "\u0085",
ExpectedError: `eol: next-line (NEL) character (U+0085) not found for end-of-line sequence "\u0085" character №1 — instead found '\r' (U+000D)`,
},
{
Value: "\r",
EOL: "\u2028",
ExpectedError: `eol: line-separator (LS) character (U+2028) not found for end-of-line sequence "\u2028" character №1 — instead found '\r' (U+000D)`,
},
{
Value: "\r\n",
EOL: "\n",
ExpectedError: `eol: line-feed (LF) character ('\n') (U+000A) not found for end-of-line sequence "\n" character №1 — instead found '\r' (U+000D)`,
},
{
Value: "\r\n",
EOL: "\u0085",
ExpectedError: `eol: next-line (NEL) character (U+0085) not found for end-of-line sequence "\u0085" character №1 — instead found '\r' (U+000D)`,
},
{
Value: "\r\n",
EOL: "\u2028",
ExpectedError: `eol: line-separator (LS) character (U+2028) not found for end-of-line sequence "\u2028" character №1 — instead found '\r' (U+000D)`,
},
{
Value: "\u0085",
EOL: "\n",
ExpectedError: `eol: line-feed (LF) character ('\n') (U+000A) not found for end-of-line sequence "\n" character №1 — instead found '\u0085' (U+0085)`,
},
{
Value: "\u0085",
EOL: "\r",
ExpectedError: `eol: carriage-return (CR) character ('\r') (U+000D) not found for end-of-line sequence "\r" character №1 — instead found '\u0085' (U+0085)`,
},
{
Value: "\u0085",
EOL: "\r\n",
ExpectedError: `eol: carriage-return (CR) character ('\r') (U+000D) not found for end-of-line sequence "\r\n" character №1 — instead found '\u0085' (U+0085)`,
},
{
Value: "\u0085",
EOL: "\u2028",
ExpectedError: `eol: line-separator (LS) character (U+2028) not found for end-of-line sequence "\u2028" character №1 — instead found '\u0085' (U+0085)`,
},
{
Value: "\u2028",
EOL: "\n",
ExpectedError: `eol: line-feed (LF) character ('\n') (U+000A) not found for end-of-line sequence "\n" character №1 — instead found '\u2028' (U+2028)`,
},
{
Value: "\u2028",
EOL: "\r",
ExpectedError: `eol: carriage-return (CR) character ('\r') (U+000D) not found for end-of-line sequence "\r" character №1 — instead found '\u2028' (U+2028)`,
},
{
Value: "\u2028",
EOL: "\r\n",
ExpectedError: `eol: carriage-return (CR) character ('\r') (U+000D) not found for end-of-line sequence "\r\n" character №1 — instead found '\u2028' (U+2028)`,
},
{
Value: "\u2028",
EOL: "\u0085",
ExpectedError: `eol: next-line (NEL) character (U+0085) not found for end-of-line sequence "\u0085" character №1 — instead found '\u2028' (U+2028)`,
},
{
Value: "\rapple banana cherry",
EOL: "\r\n",
ExpectedError: `eol: line-feed (LF) character ('\n') (U+000A) not found for end-of-line sequence "\r\n" character №2 — instead found 'a' (U+0061)`,
ExpectedNumRead: 1,
},
}
for testNumber, test := range tests {
var reader io.Reader = strings.NewReader(test.Value)
var runescanner io.RuneScanner = utf8.NewRuneScanner(reader)
actualNumRead, err := eol.ReadThisEOL(runescanner, test.EOL)
if nil == err {
t.Errorf("For test #%d, expected an error but did not actually get one.", testNumber)
t.Logf("EXPECTED-ERROR: %s", test.ExpectedError)
t.Logf("EOL: %q", test.EOL)
t.Logf("VALUE: %q", test.Value)
continue
}
{
expected := test.ExpectedError
actual := err.Error()
if expected != actual {
t.Errorf("For test #%d, the actual error is not what was expected.", testNumber)
t.Logf("EXPECTED: %q", expected)
t.Logf("ACTUAL: %q", actual)
t.Logf("EOL: %q", test.EOL)
t.Logf("VALUE: %q", test.Value)
continue
}
}
{
expected := test.ExpectedNumRead
actual := actualNumRead
if expected != actual {
t.Errorf("For test #%d, the actual number-of-bytes-read is not what was expected.", testNumber)
t.Logf("EXPECTED: %d", expected)
t.Logf("ACTUAL: %d", actual)
t.Logf("EOL: %q", test.EOL)
t.Logf("VALUE: %q", test.Value)
continue
}
}
}
}