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75459410ed
Add "struct json_writer" and a series of jw_ routines to compose JSON data into a string buffer. The resulting string may then be printed by commands wanting to support a JSON-like output format. The json_writer is limited to correctly formatting structured data for output. It does not attempt to build an object model of the JSON data. We say "JSON-like" because we do not enforce the Unicode (usually UTF-8) requirement on string fields. Internally, Git does not necessarily have Unicode/UTF-8 data for most fields, so it is currently unclear the best way to enforce that requirement. For example, on Linux pathnames can contain arbitrary 8-bit character data, so a command like "status" would not know how to encode the reported pathnames. We may want to revisit this (or double encode such strings) in the future. Helped-by: Eric Sunshine <sunshine@sunshineco.com> Helped-by: René Scharfe <l.s.r@web.de> Helped-by: Wink Saville <wink@saville.com> Helped-by: Ramsay Jones <ramsay@ramsayjones.plus.com> Signed-off-by: Jeff Hostetler <jeffhost@microsoft.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
331 lines
5.8 KiB
Bash
Executable file
331 lines
5.8 KiB
Bash
Executable file
#!/bin/sh
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test_description='test json-writer JSON generation'
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. ./test-lib.sh
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test_expect_success 'unit test of json-writer routines' '
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test-tool json-writer -u
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'
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test_expect_success 'trivial object' '
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cat >expect <<-\EOF &&
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{}
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EOF
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cat >input <<-\EOF &&
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object
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end
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EOF
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test-tool json-writer <input >actual &&
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test_cmp expect actual
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'
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test_expect_success 'trivial array' '
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cat >expect <<-\EOF &&
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[]
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EOF
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cat >input <<-\EOF &&
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array
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end
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EOF
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test-tool json-writer <input >actual &&
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test_cmp expect actual
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'
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test_expect_success 'simple object' '
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cat >expect <<-\EOF &&
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{"a":"abc","b":42,"c":3.14,"d":true,"e":false,"f":null}
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EOF
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cat >input <<-\EOF &&
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object
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object-string a abc
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object-int b 42
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object-double c 2 3.140
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object-true d
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object-false e
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object-null f
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end
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EOF
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test-tool json-writer <input >actual &&
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test_cmp expect actual
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'
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test_expect_success 'simple array' '
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cat >expect <<-\EOF &&
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["abc",42,3.14,true,false,null]
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EOF
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cat >input <<-\EOF &&
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array
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array-string abc
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array-int 42
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array-double 2 3.140
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array-true
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array-false
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array-null
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end
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EOF
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test-tool json-writer <input >actual &&
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test_cmp expect actual
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'
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test_expect_success 'escape quoting string' '
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cat >expect <<-\EOF &&
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{"a":"abc\\def"}
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EOF
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cat >input <<-\EOF &&
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object
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object-string a abc\def
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end
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EOF
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test-tool json-writer <input >actual &&
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test_cmp expect actual
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'
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test_expect_success 'escape quoting string 2' '
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cat >expect <<-\EOF &&
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{"a":"abc\"def"}
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EOF
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cat >input <<-\EOF &&
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object
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object-string a abc"def
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end
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EOF
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test-tool json-writer <input >actual &&
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test_cmp expect actual
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'
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test_expect_success 'nested inline object' '
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cat >expect <<-\EOF &&
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{"a":"abc","b":42,"sub1":{"c":3.14,"d":true,"sub2":{"e":false,"f":null}}}
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EOF
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cat >input <<-\EOF &&
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object
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object-string a abc
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object-int b 42
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object-object sub1
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object-double c 2 3.140
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object-true d
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object-object sub2
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object-false e
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object-null f
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end
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end
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end
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EOF
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test-tool json-writer <input >actual &&
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test_cmp expect actual
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'
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test_expect_success 'nested inline array' '
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cat >expect <<-\EOF &&
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["abc",42,[3.14,true,[false,null]]]
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EOF
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cat >input <<-\EOF &&
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array
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array-string abc
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array-int 42
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array-array
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array-double 2 3.140
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array-true
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array-array
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array-false
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array-null
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end
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end
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end
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EOF
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test-tool json-writer <input >actual &&
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test_cmp expect actual
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'
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test_expect_success 'nested inline object and array' '
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cat >expect <<-\EOF &&
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{"a":"abc","b":42,"sub1":{"c":3.14,"d":true,"sub2":[false,null]}}
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EOF
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cat >input <<-\EOF &&
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object
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object-string a abc
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object-int b 42
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object-object sub1
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object-double c 2 3.140
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object-true d
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object-array sub2
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array-false
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array-null
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end
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end
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end
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EOF
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test-tool json-writer <input >actual &&
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test_cmp expect actual
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'
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test_expect_success 'nested inline object and array 2' '
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cat >expect <<-\EOF &&
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{"a":"abc","b":42,"sub1":{"c":3.14,"d":true,"sub2":[false,{"g":0,"h":1},null]}}
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EOF
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cat >input <<-\EOF &&
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object
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object-string a abc
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object-int b 42
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object-object sub1
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object-double c 2 3.140
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object-true d
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object-array sub2
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array-false
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array-object
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object-int g 0
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object-int h 1
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end
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array-null
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end
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end
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end
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EOF
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test-tool json-writer <input >actual &&
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test_cmp expect actual
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'
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test_expect_success 'pretty nested inline object and array 2' '
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sed -e "s/^|//" >expect <<-\EOF &&
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|{
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| "a": "abc",
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| "b": 42,
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| "sub1": {
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| "c": 3.14,
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| "d": true,
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| "sub2": [
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| false,
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| {
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| "g": 0,
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| "h": 1
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| },
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| null
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| ]
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| }
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|}
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EOF
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cat >input <<-\EOF &&
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object
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object-string a abc
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object-int b 42
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object-object sub1
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object-double c 2 3.140
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object-true d
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object-array sub2
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array-false
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array-object
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object-int g 0
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object-int h 1
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end
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array-null
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end
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end
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end
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EOF
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test-tool json-writer -p <input >actual &&
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test_cmp expect actual
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'
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test_expect_success 'inline object with no members' '
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cat >expect <<-\EOF &&
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{"a":"abc","empty":{},"b":42}
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EOF
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cat >input <<-\EOF &&
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object
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object-string a abc
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object-object empty
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end
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object-int b 42
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end
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EOF
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test-tool json-writer <input >actual &&
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test_cmp expect actual
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'
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test_expect_success 'inline array with no members' '
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cat >expect <<-\EOF &&
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{"a":"abc","empty":[],"b":42}
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EOF
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cat >input <<-\EOF &&
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object
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object-string a abc
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object-array empty
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end
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object-int b 42
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end
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EOF
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test-tool json-writer <input >actual &&
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test_cmp expect actual
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'
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test_expect_success 'larger empty example' '
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cat >expect <<-\EOF &&
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{"a":"abc","empty":[{},{},{},[],{}],"b":42}
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EOF
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cat >input <<-\EOF &&
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object
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object-string a abc
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object-array empty
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array-object
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end
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array-object
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end
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array-object
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end
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array-array
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end
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array-object
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end
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end
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object-int b 42
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end
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EOF
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test-tool json-writer <input >actual &&
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test_cmp expect actual
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'
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test_lazy_prereq PERLJSON '
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perl -MJSON -e "exit 0"
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'
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# As a sanity check, ask Perl to parse our generated JSON and recursively
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# dump the resulting data in sorted order. Confirm that that matches our
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# expectations.
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test_expect_success PERLJSON 'parse JSON using Perl' '
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cat >expect <<-\EOF &&
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row[0].a abc
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row[0].b 42
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row[0].sub1 hash
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row[0].sub1.c 3.14
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row[0].sub1.d 1
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row[0].sub1.sub2 array
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row[0].sub1.sub2[0] 0
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row[0].sub1.sub2[1] hash
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row[0].sub1.sub2[1].g 0
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row[0].sub1.sub2[1].h 1
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row[0].sub1.sub2[2] null
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EOF
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cat >input <<-\EOF &&
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object
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object-string a abc
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object-int b 42
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object-object sub1
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object-double c 2 3.140
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object-true d
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object-array sub2
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array-false
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array-object
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object-int g 0
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object-int h 1
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end
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array-null
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end
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end
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end
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EOF
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test-tool json-writer <input >output.json &&
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perl "$TEST_DIRECTORY"/t0019/parse_json.perl <output.json >actual &&
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test_cmp expect actual
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'
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test_done
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