func TestStringScanner1(t *testing.T) {
testData := `
"teststring"
`
reader := strings.NewReader(testData)
jsonScanner := scanner.NewJSONScanner(reader)
scanner := tokenscanner.NewStringScanner(jsonScanner).(*tokenscanner.StringScanner)
if !scanner.CanProcess() {
t.Error("testData can process")
}
if scanner.RuneOfToken() != '"' {
t.Error("StringScanner.RunOfToken must be '\"'")
}
if !scanner.CanProcessRune('"') {
t.Error("StringScanner.CanProcessRune can process rune '\"'")
}
expectedToken := token.NewToken(token.KindString, "teststring")
token, err := scanner.Scan()
if err != nil {
t.Error(err)
}
if !expectedToken.IsEqualTo(token) {
t.Errorf("expected=%#v, actual=%#v", expectedToken, token)
}
}
func TestMultiCharacterScannerScan(t *testing.T) {
testCaseList := []testCaseForTestMultiCharacterScannerScan{
{data: " null ", tokenKind: token.KindNull, expectedError: false, expected: token.NewToken(token.KindNull, string(token.KindNull))},
{data: " true ", tokenKind: token.KindTrue, expectedError: false, expected: token.NewToken(token.KindTrue, string(token.KindTrue))},
{data: "false ", tokenKind: token.KindFalse, expectedError: false, expected: token.NewToken(token.KindFalse, string(token.KindFalse))},
{data: "f alse ", tokenKind: token.KindFalse, expectedError: true, expected: token.NewToken(token.KindEmpty, "")},
{data: "tru e", tokenKind: token.KindTrue, expectedError: true, expected: token.NewToken(token.KindEmpty, "")},
{data: "xnull", tokenKind: token.KindNull, expectedError: true, expected: token.NewToken(token.KindEmpty, "")},
}
for testIndex, testCase := range testCaseList {
stringReader := strings.NewReader(testCase.data)
jsonScanner := scanner.NewJSONScanner(stringReader)
scanner := tokenscanner.NewMultiCharacterScanner(testCase.tokenKind, jsonScanner).(*tokenscanner.MultiCharacterScanner)
actual, err := scanner.Scan()
if err == nil && testCase.expectedError {
t.Errorf("testCase[%d] must return error", testIndex)
}
if err != nil && !testCase.expectedError {
t.Error(err)
}
expected := testCase.expected
if !actual.IsEqualTo(expected) {
t.Errorf("testCase[%d] expected=%#v, actual=%#v", testIndex, expected, actual)
}
}
}
func TestStringScannerScan(t *testing.T) {
testCaseList := []testCaseForTestStringScannerScan{
{
data: `
"abcdefg"
`,
expected: token.NewToken(token.KindString, "abcdefg"),
},
{
data: `
"\t\n\r\b\f\\\/"
`,
expected: token.NewToken(token.KindString,
` `+`
`+"\r\b\f\\/"),
},
{
data: `
"\u65E5\u672C\u8A9E\uD867\uDE3D"
`,
expected: token.NewToken(token.KindString, "日本語𩸽"),
},
}
for testIndex, testCase := range testCaseList {
reader := strings.NewReader(testCase.data)
jsonScanner := scanner.NewJSONScanner(reader)
scanner := tokenscanner.NewStringScanner(jsonScanner).(*tokenscanner.StringScanner)
actual, err := scanner.Scan()
if err != nil {
t.Error(err)
}
if !testCase.expected.IsEqualTo(actual) {
t.Errorf("testCase[%d] expected=%#v, actual=%#v", testIndex, testCase.expected, actual)
}
}
}
func TestSingleCharacterScannerScan(t *testing.T) {
testCaseList := []testCaseForTestSingleCharacterScannerScan{
{data: "{", tokenKind: token.KindBeginObject, expected: token.NewToken(token.KindBeginObject, string(token.KindBeginObject))},
{data: "}", tokenKind: token.KindEndObject, expected: token.NewToken(token.KindEndObject, string(token.KindEndObject))},
{data: "[", tokenKind: token.KindBeginArray, expected: token.NewToken(token.KindBeginArray, string(token.KindBeginArray))},
{data: "]", tokenKind: token.KindEndArray, expected: token.NewToken(token.KindEndArray, string(token.KindEndArray))},
{data: ",", tokenKind: token.KindComma, expected: token.NewToken(token.KindComma, string(token.KindComma))},
{data: ":", tokenKind: token.KindSeparator, expected: token.NewToken(token.KindSeparator, string(token.KindSeparator))},
}
for testIndex, testCase := range testCaseList {
reader := strings.NewReader(testCase.data)
jsonScanner := scanner.NewJSONScanner(reader)
scanner := tokenscanner.NewSingleCharacterScanner(testCase.tokenKind, jsonScanner)
actual, err := scanner.Scan()
if err != nil {
t.Logf("testCase[%d]", testIndex)
t.Error(err)
}
if actual != testCase.expected {
t.Errorf("testCase[%d] expected=%#v, actual=%#v\n", testIndex, testCase.expected, actual)
}
}
}
func TestTokenIsSameKindTo(t *testing.T) {
testCaseList := []testCaseForTestTokenIsSameKindTo{
{
left: token.NewToken(token.KindBeginObject, string(token.KindBeginObject)),
right: token.NewToken(token.KindBeginObject, string(token.KindBeginObject)),
expected: true,
},
{
left: token.NewToken(token.KindEndObject, string(token.KindEndObject)),
right: token.NewToken(token.KindEndObject, string(token.KindEndObject)),
expected: true,
},
{
left: token.NewToken(token.KindBeginArray, string(token.KindBeginArray)),
right: token.NewToken(token.KindBeginArray, string(token.KindBeginArray)),
expected: true,
},
{
left: token.NewToken(token.KindEndArray, string(token.KindEndArray)),
right: token.NewToken(token.KindEndArray, string(token.KindEndArray)),
expected: true,
},
{
left: token.NewToken(token.KindComma, string(token.KindComma)),
right: token.NewToken(token.KindComma, string(token.KindComma)),
expected: true,
},
{
left: token.NewToken(token.KindSeparator, string(token.KindSeparator)),
right: token.NewToken(token.KindSeparator, string(token.KindSeparator)),
expected: true,
},
// Kinds are same, Values are not equal.
{
left: token.NewToken(token.KindString, "test1"),
right: token.NewToken(token.KindString, "test2"),
expected: true,
},
// Kinds are not equal , Values are equal.
{
left: token.NewToken(token.KindString, "test1"),
right: token.NewToken(token.KindNumber, "test1"),
expected: false,
},
}
for testIndex, testCase := range testCaseList {
left := testCase.left
right := testCase.right
actual := left.IsSameKindTo(right)
expected := testCase.expected
if actual != expected {
t.Errorf("testCase[%d] expected=%#v, actual=%#v\n", testIndex, expected, actual)
}
if left.IsSameKindTo(right) != right.IsSameKindTo(left) {
t.Errorf("testCase[%d] IsSameKindTo method must be obey commutative property", testIndex)
}
}
}
func TestCompositeCase(t *testing.T) {
testData := `
{
false: [true, null,
{
null: true
}]
}
`
expectedString := "{false:[true,null,{null:true}]}"
expectedTokens := []token.Token{
token.NewToken(token.KindBeginObject, string(token.KindBeginObject)),
token.NewToken(token.KindFalse, string(token.KindFalse)),
token.NewToken(token.KindSeparator, string(token.KindSeparator)),
token.NewToken(token.KindBeginArray, string(token.KindBeginArray)),
token.NewToken(token.KindTrue, string(token.KindTrue)),
token.NewToken(token.KindComma, string(token.KindComma)),
token.NewToken(token.KindNull, string(token.KindNull)),
token.NewToken(token.KindComma, string(token.KindComma)),
token.NewToken(token.KindBeginObject, string(token.KindBeginObject)),
token.NewToken(token.KindNull, string(token.KindNull)),
token.NewToken(token.KindSeparator, string(token.KindSeparator)),
token.NewToken(token.KindTrue, string(token.KindTrue)),
token.NewToken(token.KindEndObject, string(token.KindEndObject)),
token.NewToken(token.KindEndArray, string(token.KindEndArray)),
token.NewToken(token.KindEndObject, string(token.KindEndObject)),
}
reader := strings.NewReader(testData)
jsonScanner := scanner.NewJSONScanner(reader)
scanners := []tokenscanner.TokenScanner{
tokenscanner.NewSingleCharacterScanner(token.KindBeginObject, jsonScanner),
tokenscanner.NewSingleCharacterScanner(token.KindEndObject, jsonScanner),
tokenscanner.NewSingleCharacterScanner(token.KindBeginArray, jsonScanner),
tokenscanner.NewSingleCharacterScanner(token.KindEndArray, jsonScanner),
tokenscanner.NewSingleCharacterScanner(token.KindSeparator, jsonScanner),
tokenscanner.NewSingleCharacterScanner(token.KindComma, jsonScanner),
tokenscanner.NewMultiCharacterScanner(token.KindNull, jsonScanner),
tokenscanner.NewMultiCharacterScanner(token.KindTrue, jsonScanner),
tokenscanner.NewMultiCharacterScanner(token.KindFalse, jsonScanner),
}
var buffer bytes.Buffer
expectedTokenIndex := 0
for {
_, err := jsonScanner.PeekNonWhiteSpaceRune()
if err == io.EOF {
break
}
for scannerIndex, scanner := range scanners {
if scanner.CanProcess() {
scannedToken, err := scanner.Scan()
if err != nil {
t.Log(scannerIndex)
t.Error(err)
}
if !expectedTokens[expectedTokenIndex].IsEqualTo(scannedToken) {
t.Errorf("expected=%#v, actual=%#v", expectedTokens[expectedTokenIndex], scannedToken)
}
expectedTokenIndex++
buffer.WriteString(scannedToken.Value)
}
}
}
if buffer.String() != expectedString {
t.Errorf("expected=%#v, actual=%#v", expectedString, buffer.String())
}
}
func TestTokenizer1(t *testing.T) {
testData := `
{
"key": [
{
"inner1": "stringValue",
"inner2": true,
"inner3": false,
"inner4": null,
"inner5": {
"nested": -2.5e-3
}
}
]
}
`
reader := strings.NewReader(testData)
jsonScanner := scanner.NewJSONScanner(reader)
scanners := []tokenscanner.TokenScanner{
tokenscanner.NewSingleCharacterScanner(token.KindBeginObject, jsonScanner),
tokenscanner.NewSingleCharacterScanner(token.KindEndObject, jsonScanner),
tokenscanner.NewSingleCharacterScanner(token.KindBeginArray, jsonScanner),
tokenscanner.NewSingleCharacterScanner(token.KindEndArray, jsonScanner),
tokenscanner.NewSingleCharacterScanner(token.KindSeparator, jsonScanner),
tokenscanner.NewSingleCharacterScanner(token.KindComma, jsonScanner),
tokenscanner.NewMultiCharacterScanner(token.KindTrue, jsonScanner),
tokenscanner.NewMultiCharacterScanner(token.KindFalse, jsonScanner),
tokenscanner.NewMultiCharacterScanner(token.KindNull, jsonScanner),
tokenscanner.NewStringScanner(jsonScanner),
tokenscanner.NewNumberScanner(jsonScanner),
}
expectedTokens := []token.Token{
token.NewToken(token.KindBeginObject, string(token.KindBeginObject)),
token.NewToken(token.KindString, "key"),
token.NewToken(token.KindSeparator, string(token.KindSeparator)),
token.NewToken(token.KindBeginArray, string(token.KindBeginArray)),
token.NewToken(token.KindBeginObject, string(token.KindBeginObject)),
token.NewToken(token.KindString, "inner1"),
token.NewToken(token.KindSeparator, string(token.KindSeparator)),
token.NewToken(token.KindString, "stringValue"),
token.NewToken(token.KindComma, string(token.KindComma)),
token.NewToken(token.KindString, "inner2"),
token.NewToken(token.KindSeparator, string(token.KindSeparator)),
token.NewToken(token.KindTrue, string(token.KindTrue)),
token.NewToken(token.KindComma, string(token.KindComma)),
token.NewToken(token.KindString, "inner3"),
token.NewToken(token.KindSeparator, string(token.KindSeparator)),
token.NewToken(token.KindFalse, string(token.KindFalse)),
token.NewToken(token.KindComma, string(token.KindComma)),
token.NewToken(token.KindString, "inner4"),
token.NewToken(token.KindSeparator, string(token.KindSeparator)),
token.NewToken(token.KindNull, string(token.KindNull)),
token.NewToken(token.KindComma, string(token.KindComma)),
token.NewToken(token.KindString, "inner5"),
token.NewToken(token.KindSeparator, string(token.KindSeparator)),
token.NewToken(token.KindBeginObject, string(token.KindBeginObject)),
token.NewToken(token.KindString, "nested"),
token.NewToken(token.KindSeparator, string(token.KindSeparator)),
token.NewToken(token.KindNumber, "-2.5e-3"),
token.NewToken(token.KindEndObject, string(token.KindEndObject)),
token.NewToken(token.KindEndObject, string(token.KindEndObject)),
token.NewToken(token.KindEndArray, string(token.KindEndArray)),
token.NewToken(token.KindEndObject, string(token.KindEndObject)),
}
for {
if _, err := jsonScanner.PeekNonWhiteSpaceRune(); err == io.EOF {
break
}
for expectedIndex, expected := range expectedTokens {
for scannerIndex, scanner := range scanners {
if scanner.CanProcess() {
actual, err := scanner.Scan()
if err != nil {
t.Logf("scanners[%d]: ", scannerIndex)
t.Error(err)
}
if !expected.IsEqualTo(actual) {
t.Errorf("expected[%d] = %#v, actual = %#v\n", expectedIndex, expected, actual)
}
break
}
}
}
}
}
func TestTokenizerNextToken(t *testing.T) {
testData := `
{
"key": [
{
"inner1": "stringValue",
"inner2": true,
"inner3": false,
"inner4": null,
"inner5": {
"nested": -2.5e-3
}
}
]
}
`
target := tokenizer.NewTokenizer(strings.NewReader(testData))
expectedTokens := []token.Token{
token.NewToken(token.KindBeginObject, string(token.KindBeginObject)),
token.NewToken(token.KindString, "key"),
token.NewToken(token.KindSeparator, string(token.KindSeparator)),
token.NewToken(token.KindBeginArray, string(token.KindBeginArray)),
token.NewToken(token.KindBeginObject, string(token.KindBeginObject)),
token.NewToken(token.KindString, "inner1"),
token.NewToken(token.KindSeparator, string(token.KindSeparator)),
token.NewToken(token.KindString, "stringValue"),
token.NewToken(token.KindComma, string(token.KindComma)),
token.NewToken(token.KindString, "inner2"),
token.NewToken(token.KindSeparator, string(token.KindSeparator)),
token.NewToken(token.KindTrue, string(token.KindTrue)),
token.NewToken(token.KindComma, string(token.KindComma)),
token.NewToken(token.KindString, "inner3"),
token.NewToken(token.KindSeparator, string(token.KindSeparator)),
token.NewToken(token.KindFalse, string(token.KindFalse)),
token.NewToken(token.KindComma, string(token.KindComma)),
token.NewToken(token.KindString, "inner4"),
token.NewToken(token.KindSeparator, string(token.KindSeparator)),
token.NewToken(token.KindNull, string(token.KindNull)),
token.NewToken(token.KindComma, string(token.KindComma)),
token.NewToken(token.KindString, "inner5"),
token.NewToken(token.KindSeparator, string(token.KindSeparator)),
token.NewToken(token.KindBeginObject, string(token.KindBeginObject)),
token.NewToken(token.KindString, "nested"),
token.NewToken(token.KindSeparator, string(token.KindSeparator)),
token.NewToken(token.KindNumber, "-2.5e-3"),
token.NewToken(token.KindEndObject, string(token.KindEndObject)),
token.NewToken(token.KindEndObject, string(token.KindEndObject)),
token.NewToken(token.KindEndArray, string(token.KindEndArray)),
token.NewToken(token.KindEndObject, string(token.KindEndObject)),
}
for expectedIndex, expected := range expectedTokens {
actual, err := target.NextToken()
if err != nil {
t.Error(err)
}
if !expected.IsEqualTo(actual) {
t.Errorf("expected[%d] = %#v, actual = %#v\n", expectedIndex, expected, actual)
}
}
lastToken, err := target.NextToken()
if err != nil {
t.Error(err)
}
if !token.NewTokenEOF().IsEqualTo(lastToken) {
t.Error("EOF is expected")
}
}