initial commits
parent
b8b35efdf4
commit
ce4186c27e
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@ -0,0 +1,69 @@
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package rfc8259
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import (
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"io"
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"sourcecode.social/reiver/go-erorr"
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)
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// ParseBoolean tries to parse a JSON boolean literal — i.e., either 'false' or 'true'.
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// If it succeeds, then it return nil, and sets ‘dst’ to the parsed value.
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// If it failed, it returns an error.
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//
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// Example usage:
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//
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// var rs io.RuneScaner
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//
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// // ...
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//
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// var value bool
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// err := rfc8259.ParseTrue(rs, &value)
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//
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// if nil != err {
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// return err
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// }
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//
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// fmt.Printf("value = %t\n", value)
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func ParseBoolean(runescanner io.RuneScanner, dst *bool) error {
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if nil == runescanner {
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return errNilRuneScanner
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}
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if nil == dst {
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return errNilDestination
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}
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var r rune
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{
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var err error
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r, _, err = runescanner.ReadRune()
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if nil != err {
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if io.EOF == err {
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return errUnexpectedEndOfFile
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}
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return errProblemReadingRune(err)
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}
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if err := runescanner.UnreadRune(); nil != err {
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return errProblemUnreadingRune(err, r)
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}
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}
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switch r {
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case 'f':
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if err := ParseFalse(runescanner); nil != err {
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return err
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}
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*dst = false
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return nil
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case 't':
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if err := ParseTrue(runescanner); nil != err {
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return err
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}
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*dst = true
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return nil
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default:
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return erorr.Errorf("rfc8259: problem when trying to parse JSON boolean literal — expected either 'false' or 'true' but first character was %q (%U)", r, r)
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}
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}
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@ -0,0 +1,318 @@
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package rfc8259_test
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import (
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"testing"
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"bytes"
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"io"
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"sourcecode.social/reiver/go-utf8"
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"sourcecode.social/reiver/go-rfc8259"
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)
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func TestParseBoolean_success(t *testing.T) {
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tests := []struct{
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Value []byte
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Expected bool
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}{
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{
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Value: []byte("false"),
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Expected: false,
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},
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{
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Value: []byte("true"),
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Expected: true,
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},
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}
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for testNumber, test := range tests {
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var reader io.Reader = bytes.NewReader(test.Value)
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var runescanner io.RuneScanner = utf8.NewRuneScanner(reader)
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var actual bool
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err := rfc8259.ParseBoolean(runescanner, &actual)
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if nil != err {
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t.Errorf("For test #%d, did not expect an error but actually got one.", testNumber)
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t.Logf("ERROR: (%T) %s", err, err)
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t.Logf("VALUE: %#v", test.Value)
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t.Logf("VALUE: %q", test.Value)
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t.Logf("EXPECTED: %t", test.Expected)
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continue
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}
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{
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expected := test.Expected
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if expected != actual {
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t.Errorf("For test #%d, the actual value is not what was expected.", testNumber)
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t.Logf("EXPECTED: %t", expected)
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t.Logf("ACTUAL: %t", actual)
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t.Logf("VALUE: %#v", test.Value)
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t.Logf("VALUE: %q", test.Value)
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continue
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}
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}
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}
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}
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func TestParseBoolean_failure(t *testing.T) {
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tests := []struct{
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Value []byte
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Expected string
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}{
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{
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Value: []byte(nil),
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Expected: "rfc8259: unexpected end-of-file",
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},
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{
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Value: []byte(""),
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Expected: "rfc8259: unexpected end-of-file",
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},
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{
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Value: []byte("f"),
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Expected: "rfc8259: unexpected end-of-file",
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},
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{
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Value: []byte("fa"),
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Expected: "rfc8259: unexpected end-of-file",
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},
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{
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Value: []byte("fal"),
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Expected: "rfc8259: unexpected end-of-file",
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},
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{
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Value: []byte("fals"),
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Expected: "rfc8259: unexpected end-of-file",
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},
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{
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Value: []byte("t"),
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Expected: "rfc8259: unexpected end-of-file",
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},
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{
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Value: []byte("tr"),
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Expected: "rfc8259: unexpected end-of-file",
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},
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{
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Value: []byte("tru"),
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Expected: "rfc8259: unexpected end-of-file",
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},
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{
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Value: []byte("\t"),
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Expected: "rfc8259: problem when trying to parse JSON boolean literal — expected either 'false' or 'true' but first character was '\\t' (U+0009)",
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},
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{
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Value: []byte("\n"),
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Expected: "rfc8259: problem when trying to parse JSON boolean literal — expected either 'false' or 'true' but first character was '\\n' (U+000A)",
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},
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{
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Value: []byte("\r"),
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Expected: "rfc8259: problem when trying to parse JSON boolean literal — expected either 'false' or 'true' but first character was '\\r' (U+000D)",
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},
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{
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Value: []byte(" "),
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Expected: "rfc8259: problem when trying to parse JSON boolean literal — expected either 'false' or 'true' but first character was ' ' (U+0020)",
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},
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{
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Value: []byte("\""),
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Expected: "rfc8259: problem when trying to parse JSON boolean literal — expected either 'false' or 'true' but first character was '\"' (U+0022)",
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},
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{
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Value: []byte("-"),
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Expected: "rfc8259: problem when trying to parse JSON boolean literal — expected either 'false' or 'true' but first character was '-' (U+002D)",
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},
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{
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Value: []byte("0"),
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Expected: "rfc8259: problem when trying to parse JSON boolean literal — expected either 'false' or 'true' but first character was '0' (U+0030)",
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},
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{
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Value: []byte("1"),
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Expected: "rfc8259: problem when trying to parse JSON boolean literal — expected either 'false' or 'true' but first character was '1' (U+0031)",
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},
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{
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Value: []byte("2"),
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Expected: "rfc8259: problem when trying to parse JSON boolean literal — expected either 'false' or 'true' but first character was '2' (U+0032)",
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},
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{
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Value: []byte("3"),
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Expected: "rfc8259: problem when trying to parse JSON boolean literal — expected either 'false' or 'true' but first character was '3' (U+0033)",
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},
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{
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Value: []byte("4"),
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Expected: "rfc8259: problem when trying to parse JSON boolean literal — expected either 'false' or 'true' but first character was '4' (U+0034)",
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},
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{
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Value: []byte("5"),
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Expected: "rfc8259: problem when trying to parse JSON boolean literal — expected either 'false' or 'true' but first character was '5' (U+0035)",
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},
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{
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Value: []byte("6"),
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Expected: "rfc8259: problem when trying to parse JSON boolean literal — expected either 'false' or 'true' but first character was '6' (U+0036)",
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},
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{
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Value: []byte("7"),
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Expected: "rfc8259: problem when trying to parse JSON boolean literal — expected either 'false' or 'true' but first character was '7' (U+0037)",
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},
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{
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Value: []byte("8"),
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Expected: "rfc8259: problem when trying to parse JSON boolean literal — expected either 'false' or 'true' but first character was '8' (U+0038)",
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},
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{
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Value: []byte("9"),
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Expected: "rfc8259: problem when trying to parse JSON boolean literal — expected either 'false' or 'true' but first character was '9' (U+0039)",
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},
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{
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Value: []byte("n"),
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Expected: "rfc8259: problem when trying to parse JSON boolean literal — expected either 'false' or 'true' but first character was 'n' (U+006E)",
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},
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{
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Value: []byte("\"name\""),
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Expected: "rfc8259: problem when trying to parse JSON boolean literal — expected either 'false' or 'true' but first character was '\"' (U+0022)",
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},
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{
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Value: []byte("-34"),
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Expected: "rfc8259: problem when trying to parse JSON boolean literal — expected either 'false' or 'true' but first character was '-' (U+002D)",
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},
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{
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Value: []byte("0.123"),
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Expected: "rfc8259: problem when trying to parse JSON boolean literal — expected either 'false' or 'true' but first character was '0' (U+0030)",
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},
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{
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Value: []byte("123"),
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Expected: "rfc8259: problem when trying to parse JSON boolean literal — expected either 'false' or 'true' but first character was '1' (U+0031)",
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},
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{
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Value: []byte("22.22"),
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Expected: "rfc8259: problem when trying to parse JSON boolean literal — expected either 'false' or 'true' but first character was '2' (U+0032)",
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},
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{
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Value: []byte("3.141592653589793238462643383279502884"),
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Expected: "rfc8259: problem when trying to parse JSON boolean literal — expected either 'false' or 'true' but first character was '3' (U+0033)",
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},
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{
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Value: []byte("4E31"),
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Expected: "rfc8259: problem when trying to parse JSON boolean literal — expected either 'false' or 'true' but first character was '4' (U+0034)",
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},
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{
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Value: []byte("5e23"),
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Expected: "rfc8259: problem when trying to parse JSON boolean literal — expected either 'false' or 'true' but first character was '5' (U+0035)",
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},
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{
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Value: []byte("6789"),
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Expected: "rfc8259: problem when trying to parse JSON boolean literal — expected either 'false' or 'true' but first character was '6' (U+0036)",
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},
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{
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Value: []byte("7978777675"),
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Expected: "rfc8259: problem when trying to parse JSON boolean literal — expected either 'false' or 'true' but first character was '7' (U+0037)",
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},
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{
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Value: []byte("812"),
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Expected: "rfc8259: problem when trying to parse JSON boolean literal — expected either 'false' or 'true' but first character was '8' (U+0038)",
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},
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{
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Value: []byte("901"),
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Expected: "rfc8259: problem when trying to parse JSON boolean literal — expected either 'false' or 'true' but first character was '9' (U+0039)",
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},
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{
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Value: []byte("null"),
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Expected: "rfc8259: problem when trying to parse JSON boolean literal — expected either 'false' or 'true' but first character was 'n' (U+006E)",
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},
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{
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Value: []byte("F"),
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Expected: "rfc8259: problem when trying to parse JSON boolean literal — expected either 'false' or 'true' but first character was 'F' (U+0046)",
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},
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{
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Value: []byte("fA"),
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Expected: "rfc8259: problem when trying to parse JSON boolean literal 'false' — expected a 'a' (U+0061) but actually got a 'A' (U+0041)",
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},
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{
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Value: []byte("faL"),
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Expected: "rfc8259: problem when trying to parse JSON boolean literal 'false' — expected a 'l' (U+006C) but actually got a 'L' (U+004C)",
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},
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{
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Value: []byte("falS"),
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Expected: "rfc8259: problem when trying to parse JSON boolean literal 'false' — expected a 's' (U+0073) but actually got a 'S' (U+0053)",
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},
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{
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Value: []byte("falsE"),
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Expected: "rfc8259: problem when trying to parse JSON boolean literal 'false' — expected a 'e' (U+0065) but actually got a 'E' (U+0045)",
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},
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{
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Value: []byte("fals,"),
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Expected: "rfc8259: problem when trying to parse JSON boolean literal 'false' — expected a 'e' (U+0065) but actually got a ',' (U+002C)",
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},
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{
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Value: []byte("T"),
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Expected: "rfc8259: problem when trying to parse JSON boolean literal — expected either 'false' or 'true' but first character was 'T' (U+0054)",
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},
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{
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Value: []byte("tR"),
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Expected: "rfc8259: problem when trying to parse JSON boolean literal 'true' — expected a 'r' (U+0072) but actually got a 'R' (U+0052)",
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},
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{
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Value: []byte("trU"),
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Expected: "rfc8259: problem when trying to parse JSON boolean literal 'true' — expected a 'u' (U+0075) but actually got a 'U' (U+0055)",
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},
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{
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Value: []byte("truE"),
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Expected: "rfc8259: problem when trying to parse JSON boolean literal 'true' — expected a 'e' (U+0065) but actually got a 'E' (U+0045)",
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},
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{
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Value: []byte("tru,"),
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Expected: "rfc8259: problem when trying to parse JSON boolean literal 'true' — expected a 'e' (U+0065) but actually got a ',' (U+002C)",
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},
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}
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for testNumber, test := range tests {
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var reader io.Reader = bytes.NewReader(test.Value)
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var runescanner io.RuneScanner = utf8.NewRuneScanner(reader)
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var actual bool
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err := rfc8259.ParseBoolean(runescanner, &actual)
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if nil == err {
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t.Errorf("Expected an error but did not actually get one.")
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t.Logf("VALUE: %#v", test.Value)
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t.Logf("VALUE: %q", test.Value)
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continue
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}
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{
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actual := err.Error()
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expected := test.Expected
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if expected != actual {
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t.Errorf("For test #%d, the actual value for the error is not what was expected." , testNumber)
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t.Logf("EXPECTED: %q", expected)
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t.Logf("ACTUAL: %q", actual)
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continue
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}
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}
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}
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}
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Loading…
Reference in New Issue