File size: 5,255 Bytes
e36aeda | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 | // Copyright 2020 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
//go:build goexperiment.jsonv2
package json
import (
"archive/tar"
"bytes"
"errors"
"io"
"strings"
"testing"
"encoding/json/internal/jsonwire"
"encoding/json/jsontext"
)
func TestSemanticError(t *testing.T) {
tests := []struct {
err error
want string
}{{
err: &SemanticError{},
want: `json: cannot handle`,
}, {
err: &SemanticError{JSONKind: 'n'},
want: `json: cannot handle JSON null`,
}, {
err: &SemanticError{action: "unmarshal", JSONKind: 't'},
want: `json: cannot unmarshal JSON boolean`,
}, {
err: &SemanticError{action: "unmarshal", JSONKind: 'x'},
want: `json: cannot unmarshal`, // invalid token kinds are ignored
}, {
err: &SemanticError{action: "marshal", JSONKind: '"'},
want: `json: cannot marshal JSON string`,
}, {
err: &SemanticError{GoType: T[bool]()},
want: `json: cannot handle Go bool`,
}, {
err: &SemanticError{action: "marshal", GoType: T[int]()},
want: `json: cannot marshal from Go int`,
}, {
err: &SemanticError{action: "unmarshal", GoType: T[uint]()},
want: `json: cannot unmarshal into Go uint`,
}, {
err: &SemanticError{GoType: T[struct{ Alpha, Bravo, Charlie, Delta, Echo, Foxtrot, Golf, Hotel string }]()},
want: `json: cannot handle Go struct`,
}, {
err: &SemanticError{GoType: T[struct{ Alpha, Bravo, Charlie, Delta, Echo, Foxtrot, Golf, Hotel, x string }]()},
want: `json: cannot handle Go v2.struct`,
}, {
err: &SemanticError{JSONKind: '0', GoType: T[tar.Header]()},
want: `json: cannot handle JSON number with Go tar.Header`,
}, {
err: &SemanticError{action: "unmarshal", JSONKind: '0', JSONValue: jsontext.Value(`1e1000`), GoType: T[int]()},
want: `json: cannot unmarshal JSON number 1e1000 into Go int`,
}, {
err: &SemanticError{action: "marshal", JSONKind: '{', GoType: T[bytes.Buffer]()},
want: `json: cannot marshal JSON object from Go bytes.Buffer`,
}, {
err: &SemanticError{action: "unmarshal", JSONKind: ']', GoType: T[strings.Reader]()},
want: `json: cannot unmarshal JSON array into Go strings.Reader`,
}, {
err: &SemanticError{action: "unmarshal", JSONKind: '{', GoType: T[float64](), ByteOffset: 123},
want: `json: cannot unmarshal JSON object into Go float64 after offset 123`,
}, {
err: &SemanticError{action: "marshal", JSONKind: 'f', GoType: T[complex128](), ByteOffset: 123, JSONPointer: "/foo/2/bar/3"},
want: `json: cannot marshal JSON boolean from Go complex128 within "/foo/2/bar/3"`,
}, {
err: &SemanticError{action: "unmarshal", JSONKind: '}', GoType: T[io.Reader](), ByteOffset: 123, JSONPointer: "/foo/2/bar/3", Err: errors.New("some underlying error")},
want: `json: cannot unmarshal JSON object into Go io.Reader within "/foo/2/bar/3": some underlying error`,
}, {
err: &SemanticError{Err: errors.New("some underlying error")},
want: `json: cannot handle: some underlying error`,
}, {
err: &SemanticError{ByteOffset: 123},
want: `json: cannot handle after offset 123`,
}, {
err: &SemanticError{JSONPointer: "/foo/2/bar/3"},
want: `json: cannot handle within "/foo/2/bar/3"`,
}, {
err: &SemanticError{action: "unmarshal", JSONPointer: "/3", GoType: T[struct{ Fizz, Buzz string }](), Err: ErrUnknownName},
want: `json: cannot unmarshal into Go struct { Fizz string; Buzz string }: unknown object member name "3"`,
}, {
err: &SemanticError{action: "unmarshal", JSONPointer: "/foo/2/bar/3", GoType: T[struct{ Foo string }](), Err: ErrUnknownName},
want: `json: cannot unmarshal into Go struct { Foo string }: unknown object member name "3" within "/foo/2/bar"`,
}, {
err: &SemanticError{JSONPointer: "/foo/bar", ByteOffset: 16, GoType: T[string](), Err: &jsontext.SyntacticError{JSONPointer: "/foo/bar/baz", ByteOffset: 53, Err: jsonwire.ErrInvalidUTF8}},
want: `json: cannot handle Go string: invalid UTF-8 within "/foo/bar/baz" after offset 53`,
}, {
err: &SemanticError{JSONPointer: "/fizz/bar", ByteOffset: 16, GoType: T[string](), Err: &jsontext.SyntacticError{JSONPointer: "/foo/bar/baz", ByteOffset: 53, Err: jsonwire.ErrInvalidUTF8}},
want: `json: cannot handle Go string within "/fizz/bar": invalid UTF-8 within "/foo/bar/baz" after offset 53`,
}, {
err: &SemanticError{ByteOffset: 16, GoType: T[string](), Err: &jsontext.SyntacticError{JSONPointer: "/foo/bar/baz", ByteOffset: 53, Err: jsonwire.ErrInvalidUTF8}},
want: `json: cannot handle Go string: invalid UTF-8 within "/foo/bar/baz" after offset 53`,
}, {
err: &SemanticError{ByteOffset: 85, GoType: T[string](), Err: &jsontext.SyntacticError{JSONPointer: "/foo/bar/baz", ByteOffset: 53, Err: jsonwire.ErrInvalidUTF8}},
want: `json: cannot handle Go string after offset 85: invalid UTF-8 within "/foo/bar/baz" after offset 53`,
}}
for _, tt := range tests {
got := tt.err.Error()
// Cleanup the error of non-deterministic rendering effects.
if strings.HasPrefix(got, errorPrefix+"unable to ") {
got = errorPrefix + "cannot " + strings.TrimPrefix(got, errorPrefix+"unable to ")
}
if got != tt.want {
t.Errorf("%#v.Error mismatch:\ngot %v\nwant %v", tt.err, got, tt.want)
}
}
}
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