diff options
Diffstat (limited to 'libgo/go/encoding/json/stream_test.go')
-rw-r--r-- | libgo/go/encoding/json/stream_test.go | 148 |
1 files changed, 148 insertions, 0 deletions
diff --git a/libgo/go/encoding/json/stream_test.go b/libgo/go/encoding/json/stream_test.go index b562e87690d..c2e30408cd8 100644 --- a/libgo/go/encoding/json/stream_test.go +++ b/libgo/go/encoding/json/stream_test.go @@ -6,8 +6,12 @@ package json import ( "bytes" + "io" "io/ioutil" + "log" "net" + "net/http" + "net/http/httptest" "reflect" "strings" "testing" @@ -204,3 +208,147 @@ func BenchmarkEncoderEncode(b *testing.B) { } } } + +type tokenStreamCase struct { + json string + expTokens []interface{} +} + +type decodeThis struct { + v interface{} +} + +var tokenStreamCases []tokenStreamCase = []tokenStreamCase{ + // streaming token cases + {json: `10`, expTokens: []interface{}{float64(10)}}, + {json: ` [10] `, expTokens: []interface{}{ + Delim('['), float64(10), Delim(']')}}, + {json: ` [false,10,"b"] `, expTokens: []interface{}{ + Delim('['), false, float64(10), "b", Delim(']')}}, + {json: `{ "a": 1 }`, expTokens: []interface{}{ + Delim('{'), "a", float64(1), Delim('}')}}, + {json: `{"a": 1, "b":"3"}`, expTokens: []interface{}{ + Delim('{'), "a", float64(1), "b", "3", Delim('}')}}, + {json: ` [{"a": 1},{"a": 2}] `, expTokens: []interface{}{ + Delim('['), + Delim('{'), "a", float64(1), Delim('}'), + Delim('{'), "a", float64(2), Delim('}'), + Delim(']')}}, + {json: `{"obj": {"a": 1}}`, expTokens: []interface{}{ + Delim('{'), "obj", Delim('{'), "a", float64(1), Delim('}'), + Delim('}')}}, + {json: `{"obj": [{"a": 1}]}`, expTokens: []interface{}{ + Delim('{'), "obj", Delim('['), + Delim('{'), "a", float64(1), Delim('}'), + Delim(']'), Delim('}')}}, + + // streaming tokens with intermittent Decode() + {json: `{ "a": 1 }`, expTokens: []interface{}{ + Delim('{'), "a", + decodeThis{float64(1)}, + Delim('}')}}, + {json: ` [ { "a" : 1 } ] `, expTokens: []interface{}{ + Delim('['), + decodeThis{map[string]interface{}{"a": float64(1)}}, + Delim(']')}}, + {json: ` [{"a": 1},{"a": 2}] `, expTokens: []interface{}{ + Delim('['), + decodeThis{map[string]interface{}{"a": float64(1)}}, + decodeThis{map[string]interface{}{"a": float64(2)}}, + Delim(']')}}, + {json: `{ "obj" : [ { "a" : 1 } ] }`, expTokens: []interface{}{ + Delim('{'), "obj", Delim('['), + decodeThis{map[string]interface{}{"a": float64(1)}}, + Delim(']'), Delim('}')}}, + + {json: `{"obj": {"a": 1}}`, expTokens: []interface{}{ + Delim('{'), "obj", + decodeThis{map[string]interface{}{"a": float64(1)}}, + Delim('}')}}, + {json: `{"obj": [{"a": 1}]}`, expTokens: []interface{}{ + Delim('{'), "obj", + decodeThis{[]interface{}{ + map[string]interface{}{"a": float64(1)}, + }}, + Delim('}')}}, + {json: ` [{"a": 1} {"a": 2}] `, expTokens: []interface{}{ + Delim('['), + decodeThis{map[string]interface{}{"a": float64(1)}}, + decodeThis{&SyntaxError{"expected comma after array element", 0}}, + }}, + {json: `{ "a" 1 }`, expTokens: []interface{}{ + Delim('{'), "a", + decodeThis{&SyntaxError{"expected colon after object key", 0}}, + }}, +} + +func TestDecodeInStream(t *testing.T) { + + for ci, tcase := range tokenStreamCases { + + dec := NewDecoder(strings.NewReader(tcase.json)) + for i, etk := range tcase.expTokens { + + var tk interface{} + var err error + + if dt, ok := etk.(decodeThis); ok { + etk = dt.v + err = dec.Decode(&tk) + } else { + tk, err = dec.Token() + } + if experr, ok := etk.(error); ok { + if err == nil || err.Error() != experr.Error() { + t.Errorf("case %v: Expected error %v in %q, but was %v", ci, experr, tcase.json, err) + } + break + } else if err == io.EOF { + t.Errorf("case %v: Unexpected EOF in %q", ci, tcase.json) + break + } else if err != nil { + t.Errorf("case %v: Unexpected error '%v' in %q", ci, err, tcase.json) + break + } + if !reflect.DeepEqual(tk, etk) { + t.Errorf(`case %v: %q @ %v expected %T(%v) was %T(%v)`, ci, tcase.json, i, etk, etk, tk, tk) + break + } + } + } + +} + +// Test from golang.org/issue/11893 +func TestHTTPDecoding(t *testing.T) { + const raw = `{ "foo": "bar" }` + + ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) { + w.Write([]byte(raw)) + })) + defer ts.Close() + res, err := http.Get(ts.URL) + if err != nil { + log.Fatalf("GET failed: %v", err) + } + defer res.Body.Close() + + foo := struct { + Foo string + }{} + + d := NewDecoder(res.Body) + err = d.Decode(&foo) + if err != nil { + t.Fatalf("Decode: %v", err) + } + if foo.Foo != "bar" { + t.Errorf("decoded %q; want \"bar\"", foo.Foo) + } + + // make sure we get the EOF the second time + err = d.Decode(&foo) + if err != io.EOF { + t.Errorf("err = %v; want io.EOF", err) + } +} |