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test_json.vim
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test_json.vim
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" Test for JSON functions.
let s:json1 = '"str\"in\\g"'
let s:var1 = "str\"in\\g"
let s:json2 = '"\u0001\u0002\u0003\u0004\u0005\u0006\u0007"'
let s:var2 = "\x01\x02\x03\x04\x05\x06\x07"
let s:json3 = '"\b\t\n\u000b\f\r\u000e\u000f"'
let s:var3 = "\x08\x09\x0a\x0b\x0c\x0d\x0e\x0f"
let s:json4 = '"\u0010\u0011\u0012\u0013\u0014\u0015\u0016\u0017"'
let s:var4 = "\x10\x11\x12\x13\x14\x15\x16\x17"
let s:json5 = '"\u0018\u0019\u001a\u001b\u001c\u001d\u001e\u001f"'
let s:var5 = "\x18\x19\x1a\x1b\x1c\x1d\x1e\x1f"
" surrogate pair
let s:jsonsp1 = '"\ud83c\udf63"'
let s:varsp1 = "\xf0\x9f\x8d\xa3"
let s:jsonsp2 = '"\ud83c\u00a0"'
let s:varsp2 = "\ud83c\u00a0"
let s:jsonmb = '"s¢cĴgё"'
let s:varmb = "s¢cĴgё"
let s:jsonnr = '1234'
let s:varnr = 1234
let s:jsonfl = '12.34'
let s:varfl = 12.34
let s:jsonneginf = '-Infinity'
let s:jsonposinf = 'Infinity'
let s:varneginf = -1.0 / 0.0
let s:varposinf = 1.0 / 0.0
let s:jsonnan = 'NaN'
let s:varnan = 0.0 / 0.0
let s:jsonl1 = '[1,"a",3]'
let s:varl1 = [1, "a", 3]
let s:jsonl2 = '[1,["a",[],"c"],3]'
let s:jsonl2s = " [\r1 , [ \"a\" , [ ] , \"c\" ] , 3\<Tab>]\r\n"
let s:varl2 = [1, 2, 3]
let l2 = ['a', s:varl2, 'c']
let s:varl2[1] = l2
let s:varl2x = [1, ["a", [], "c"], 3]
let s:jsonl3 = '[[1,2],[1,2]]'
let l3 = [1, 2]
let s:varl3 = [l3, l3]
let s:jsond1 = '{"a":1,"b":"bee","c":[1,2]}'
let s:jsd1 = '{a:1,b:"bee",c:[1,2]}'
let s:vard1 = {"a": 1, "b": "bee","c": [1,2]}
let s:jsond2 = '{"1":1,"2":{"a":"aa","b":{},"c":"cc"},"3":3}'
let s:jsd2 = '{"1":1,"2":{a:"aa",b:{},c:"cc"},"3":3}'
let s:jsond2s = " { \"1\" : 1 , \"2\" :\n{ \"a\"\r: \"aa\" , \"b\" : {\<Tab>} , \"c\" : \"cc\" } , \"3\" : 3 }\r\n"
let s:jsd2s = " { \"1\" : 1 , \"2\" :\n{ a\r: \"aa\" , b : {\<Tab>} , c : \"cc\" } , \"3\" : 3 }\r\n"
let s:vard2 = {"1": 1, "2": 2, "3": 3}
let d2 = {"a": "aa", "b": s:vard2, "c": "cc"}
let s:vard2["2"] = d2
let s:vard2x = {"1": 1, "2": {"a": "aa", "b": {}, "c": "cc"}, "3": 3}
let d3 = {"a": 1, "b": 2}
let s:vard3 = {"x": d3, "y": d3}
let s:jsond3 = '{"x":{"a":1,"b":2},"y":{"a":1,"b":2}}'
let s:jsd3 = '{x:{a:1,b:2},y:{a:1,b:2}}'
let s:vard4 = {"key": v:none}
let s:vard4x = {"key": v:null}
let s:jsond4 = '{"key":null}'
let s:jsd4 = '{key:null}' " js_encode puts no quotes around simple key.
let s:vard5 = {"key!": v:none}
let s:vard5x = {"key!": v:null}
let s:jsond5 = '{"key!":null}'
let s:jsd5 = '{"key!":null}' " js_encode puts quotes around non-simple key.
let s:jsonvals = '[true,false,null,null]'
let s:varvals = [v:true, v:false, v:null, v:null]
func Test_json_encode()
call assert_equal(s:json1, json_encode(s:var1))
call assert_equal(s:json2, json_encode(s:var2))
call assert_equal(s:json3, s:var3->json_encode())
call assert_equal(s:json4, json_encode(s:var4))
call assert_equal(s:json5, json_encode(s:var5))
call assert_equal(s:jsonmb, json_encode(s:varmb))
" no test for surrogate pair, json_encode() doesn't create them.
call assert_equal(s:jsonnr, json_encode(s:varnr))
call assert_equal(s:jsonfl, json_encode(s:varfl))
call assert_equal(s:jsonneginf, json_encode(s:varneginf))
call assert_equal(s:jsonposinf, json_encode(s:varposinf))
call assert_equal(s:jsonnan, json_encode(s:varnan))
call assert_equal(s:jsonl1, json_encode(s:varl1))
call assert_equal(s:jsonl2, json_encode(s:varl2))
call assert_equal(s:jsonl3, json_encode(s:varl3))
call assert_equal(s:jsond1, json_encode(s:vard1))
call assert_equal(s:jsond2, json_encode(s:vard2))
call assert_equal(s:jsond3, json_encode(s:vard3))
call assert_equal(s:jsond4, json_encode(s:vard4))
call assert_equal(s:jsond5, json_encode(s:vard5))
call assert_equal(s:jsonvals, json_encode(s:varvals))
" JSON is always encoded in utf-8 regardless of 'encoding' value.
let save_encoding = &encoding
set encoding=latin1
call assert_equal('"café"', json_encode("caf\xe9"))
let &encoding = save_encoding
" Invalid utf-8 sequences are replaced with U+FFFD (replacement character)
call assert_equal('"foo' . "\ufffd" . '"', json_encode("foo\xAB"))
call assert_fails('echo json_encode(function("tr"))', 'E1161: Cannot json encode a func')
call assert_fails('echo json_encode([function("tr")])', 'E1161: Cannot json encode a func')
call assert_equal('{"a":""}', json_encode({'a': test_null_string()}))
call assert_equal('{"a":[]}', json_encode({"a": test_null_list()}))
call assert_equal('{"a":{}}', json_encode({"a": test_null_dict()}))
silent! let res = json_encode(function("tr"))
call assert_equal("", res)
endfunc
func Test_json_decode()
call assert_equal(s:var1, json_decode(s:json1))
call assert_equal(s:var2, json_decode(s:json2))
call assert_equal(s:var3, s:json3->json_decode())
call assert_equal(s:var4, json_decode(s:json4))
call assert_equal(s:var5, json_decode(s:json5))
call assert_equal(s:varmb, json_decode(s:jsonmb))
call assert_equal(s:varsp1, json_decode(s:jsonsp1))
call assert_equal(s:varsp2, json_decode(s:jsonsp2))
call assert_equal(s:varnr, json_decode(s:jsonnr))
call assert_equal(s:varfl, json_decode(s:jsonfl))
call assert_equal(s:varl1, json_decode(s:jsonl1))
call assert_equal(s:varl2x, json_decode(s:jsonl2))
call assert_equal(s:varl2x, json_decode(s:jsonl2s))
call assert_equal(s:varl3, json_decode(s:jsonl3))
call assert_equal(s:vard1, json_decode(s:jsond1))
call assert_equal(s:vard2x, json_decode(s:jsond2))
call assert_equal(s:vard2x, json_decode(s:jsond2s))
call assert_equal(s:vard3, json_decode(s:jsond3))
call assert_equal(s:vard4x, json_decode(s:jsond4))
call assert_equal(s:vard5x, json_decode(s:jsond5))
call assert_equal(s:varvals, json_decode(s:jsonvals))
call assert_equal(v:true, json_decode('true'))
call assert_equal(type(v:true), type(json_decode('true')))
call assert_equal(v:none, json_decode(''))
call assert_equal(type(v:none), type(json_decode('')))
call assert_equal("", json_decode('""'))
" Character in string after \ is ignored if not special.
call assert_equal("x", json_decode('"\x"'))
" JSON is always encoded in utf-8 regardless of 'encoding' value.
let save_encoding = &encoding
set encoding=latin1
call assert_equal("caf\xe9", json_decode('"café"'))
let &encoding = save_encoding
" empty key is OK
call assert_equal({'': 'ok'}, json_decode('{"": "ok"}'))
" but not twice
call assert_fails("call json_decode('{\"\": \"ok\", \"\": \"bad\"}')", 'E938:')
call assert_equal({'n': 1}, json_decode('{"n":1,}'))
call assert_fails("call json_decode(\"{'n':'1',}\")", 'E491:')
call assert_fails("call json_decode(\"'n'\")", 'E491:')
call assert_fails('call json_decode("\"")', "E491:")
call assert_fails('call json_decode("blah")', "E491:")
call assert_fails('call json_decode("true blah")', "E488:")
call assert_fails('call json_decode("<foobar>")', "E491:")
call assert_fails('call json_decode("{\"a\":1,\"a\":2}")', "E938:")
call assert_fails('call json_decode("{")', "E491:")
call assert_fails('call json_decode("{foobar}")', "E491:")
call assert_fails('call json_decode("{\"n\",")', "E491:")
call assert_fails('call json_decode("{\"n\":")', "E491:")
call assert_fails('call json_decode("{\"n\":1")', "E491:")
call assert_fails('call json_decode("{\"n\":1,")', "E491:")
call assert_fails('call json_decode("{\"n\",1}")', "E491:")
call assert_fails('call json_decode("{-}")', "E491:")
call assert_fails('call json_decode("{3.14:1}")', "E806:")
call assert_fails('call json_decode("[foobar]")', "E491:")
call assert_fails('call json_decode("[")', "E491:")
call assert_fails('call json_decode("[1")', "E491:")
call assert_fails('call json_decode("[1,")', "E491:")
call assert_fails('call json_decode("[1 2]")', "E491:")
call assert_fails('call json_decode("[1,,2]")', "E491:")
call assert_fails('call json_decode("{{}:42}")', "E491:")
call assert_fails('call json_decode("{[]:42}")', "E491:")
call assert_fails('call json_decode("{1:1{")', "E491:")
call assert_fails('call json_decode("-")', "E491:")
call assert_fails('call json_decode("-1x")', "E491:")
call assert_fails('call json_decode("infinit")', "E491:")
call assert_fails('call json_decode("\"\\u111Z\"")', 'E491:')
call assert_equal('[😂]', json_decode('"[\uD83D\uDE02]"'))
call assert_equal('a😂b', json_decode('"a\uD83D\uDE02b"'))
call assert_fails('call json_decode("{\"\":{\"\":{")', 'E491:')
endfunc
let s:jsl5 = '[7,,,]'
let s:varl5 = [7, v:none, v:none]
func Test_js_encode()
call assert_equal(s:json1, js_encode(s:var1))
call assert_equal(s:json2, js_encode(s:var2))
call assert_equal(s:json3, s:var3->js_encode())
call assert_equal(s:json4, js_encode(s:var4))
call assert_equal(s:json5, js_encode(s:var5))
call assert_equal(s:jsonmb, js_encode(s:varmb))
" no test for surrogate pair, js_encode() doesn't create them.
call assert_equal(s:jsonnr, js_encode(s:varnr))
call assert_equal(s:jsonfl, js_encode(s:varfl))
call assert_equal(s:jsonneginf, js_encode(s:varneginf))
call assert_equal(s:jsonposinf, js_encode(s:varposinf))
call assert_equal(s:jsonnan, js_encode(s:varnan))
call assert_equal(s:jsonl1, js_encode(s:varl1))
call assert_equal(s:jsonl2, js_encode(s:varl2))
call assert_equal(s:jsonl3, js_encode(s:varl3))
call assert_equal(s:jsd1, js_encode(s:vard1))
call assert_equal(s:jsd2, js_encode(s:vard2))
call assert_equal(s:jsd3, js_encode(s:vard3))
call assert_equal(s:jsd4, js_encode(s:vard4))
call assert_equal(s:jsd5, js_encode(s:vard5))
call assert_equal(s:jsonvals, js_encode(s:varvals))
call assert_fails('echo js_encode(function("tr"))', 'E1161: Cannot json encode a func')
call assert_fails('echo js_encode([function("tr")])', 'E1161: Cannot json encode a func')
silent! let res = js_encode(function("tr"))
call assert_equal("", res)
call assert_equal(s:jsl5, js_encode(s:varl5))
endfunc
func Test_js_decode()
call assert_equal(s:var1, js_decode(s:json1))
call assert_equal(s:var2, js_decode(s:json2))
call assert_equal(s:var3, s:json3->js_decode())
call assert_equal(s:var4, js_decode(s:json4))
call assert_equal(s:var5, js_decode(s:json5))
call assert_equal(s:varmb, js_decode(s:jsonmb))
call assert_equal(s:varsp1, js_decode(s:jsonsp1))
call assert_equal(s:varsp2, js_decode(s:jsonsp2))
call assert_equal(s:varnr, js_decode(s:jsonnr))
call assert_equal(s:varfl, js_decode(s:jsonfl))
call assert_equal(s:varneginf, js_decode(s:jsonneginf))
call assert_equal(s:varposinf, js_decode(s:jsonposinf))
call assert_true(isnan(js_decode(s:jsonnan)))
call assert_equal(s:varl1, js_decode(s:jsonl1))
call assert_equal(s:varl2x, js_decode(s:jsonl2))
call assert_equal(s:varl2x, js_decode(s:jsonl2s))
call assert_equal(s:varl3, js_decode(s:jsonl3))
call assert_equal(s:vard1, js_decode(s:jsond1))
call assert_equal(s:vard1, js_decode(s:jsd1))
call assert_equal(s:vard2x, js_decode(s:jsond2))
call assert_equal(s:vard2x, js_decode(s:jsd2))
call assert_equal(s:vard2x, js_decode(s:jsond2s))
call assert_equal(s:vard2x, js_decode(s:jsd2s))
call assert_equal(s:vard3, js_decode(s:jsond3))
call assert_equal(s:vard3, js_decode(s:jsd3))
call assert_equal(s:vard4x, js_decode(s:jsond4))
call assert_equal(s:vard4x, js_decode(s:jsd4))
call assert_equal(s:vard5x, js_decode(s:jsond5))
call assert_equal(s:vard5x, js_decode(s:jsd5))
call assert_equal(s:varvals, js_decode(s:jsonvals))
call assert_equal(v:true, js_decode('true'))
call assert_equal(type(v:true), type(js_decode('true')))
call assert_equal(v:none, js_decode(''))
call assert_equal(type(v:none), type(js_decode('')))
call assert_equal("", js_decode('""'))
call assert_equal("", js_decode("''"))
call assert_equal('n', js_decode("'n'"))
call assert_equal({'n': 1}, js_decode('{"n":1,}'))
call assert_equal({'n': '1'}, js_decode("{'n':'1',}"))
call assert_fails('call js_decode("\"")', "E491:")
call assert_fails('call js_decode("blah")', "E491:")
call assert_fails('call js_decode("true blah")', "E488:")
call assert_fails('call js_decode("<foobar>")', "E491:")
call assert_fails('call js_decode("{")', "E491:")
call assert_fails('call js_decode("{foobar}")', "E491:")
call assert_fails('call js_decode("{\"n\",")', "E491:")
call assert_fails('call js_decode("{\"n\":")', "E491:")
call assert_fails('call js_decode("{\"n\":1")', "E491:")
call assert_fails('call js_decode("{\"n\":1,")', "E491:")
call assert_fails('call js_decode("{\"n\",1}")', "E491:")
call assert_fails('call js_decode("{-}")', "E491:")
call assert_fails('call js_decode("[foobar]")', "E491:")
call assert_fails('call js_decode("[")', "E491:")
call assert_fails('call js_decode("[1")', "E491:")
call assert_fails('call js_decode("[1,")', "E491:")
call assert_fails('call js_decode("[1 2]")', "E491:")
call assert_equal(s:varl5, js_decode(s:jsl5))
endfunc
func Test_json_encode_long()
" The growarray uses a grow size of 4000, check that a result that is exactly
" 4000 bytes long is not missing the final NUL.
let json = json_encode([repeat('a', 3996)])
call assert_equal(4000, len(json))
endfunc
" vim: shiftwidth=2 sts=2 expandtab