77 lines
2.3 KiB
Go
77 lines
2.3 KiB
Go
// Copyright 2024 PingCAP, Inc.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package partialjson
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import (
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"encoding/json"
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"io"
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"testing"
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"github.com/stretchr/testify/require"
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)
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func TestIter(t *testing.T) {
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failCases := [][2]string{
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{"{", "unexpected EOF"},
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{"[]", "expected '{' for topLevelJSONTokenIter, got json.Delim ["},
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{"{a}", "invalid character 'a'"},
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{"{]", "invalid character ']'"},
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}
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for _, ca := range failCases {
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i := newTopLevelJSONTokenIter([]byte(ca[0]))
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_, err := i.next(false)
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for err == nil {
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_, err = i.next(false)
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}
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require.ErrorContains(t, err, ca[1], "content: %s", ca[0])
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}
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succCases := map[string][][]json.Token{
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"{}": nil,
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`{"a": 1, "b": "val"}`: {
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[]json.Token{"a"}, []json.Token{json.Number("1")},
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[]json.Token{"b"}, []json.Token{"val"}},
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`{"a": 1, "long1": {"skip": "skip"}, "b": "val", "long2": [0,0,{"skip":2}]}`: {
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[]json.Token{"a"}, []json.Token{json.Number("1")},
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[]json.Token{"long1"}, []json.Token{
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json.Delim('{'), "skip", "skip", json.Delim('}'),
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},
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[]json.Token{"b"}, []json.Token{"val"},
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[]json.Token{"long2"}, []json.Token{
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json.Delim('['), json.Number("0"), json.Number("0"), json.Delim('{'), "skip", json.Number("2"), json.Delim('}'), json.Delim(']'),
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},
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},
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}
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for content, expected := range succCases {
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i := newTopLevelJSONTokenIter([]byte(content))
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expectedIdx := 0
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for expectedIdx < len(expected) {
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name, err := i.readName()
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require.NoError(t, err, "content: %s", content)
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require.Equal(t, expected[expectedIdx], []json.Token{name}, "content: %s", content)
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expectedIdx++
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tok, err := i.next(false)
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require.NoError(t, err, "content: %s", content)
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require.Equal(t, expected[expectedIdx], tok, "content: %s", content)
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expectedIdx++
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}
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_, err := i.next(false)
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require.ErrorIs(t, err, io.EOF, "content: %s", content)
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}
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}
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