tokenizer := lex.NewTokenizer("", strings.NewReader(test.input+"\n"), nil)
		parser := NewParser(ctxt, arch, tokenizer)

		err := tryParse(t, func() {
			parser.Parse()
		})

		switch {
		case err == nil:
			t.Errorf("#%d: %q: want error %q; have none", i, test.input, test.error)
		case !strings.Contains(err.Error(), test.error):
			t.Errorf("#%d: %q: want error %q; have %q", i, test.input, test.error, err)
		}
	}

```

## Commandline

`jstream` comes with a cli tool for quick viewing of parsed values from JSON input:

```bash
jstream -d 1 < input.json
```

```json
{"colors":["red","green","blue"],"desc":"RGB"}
{"colors":["cyan","magenta","yellow","black"],"desc":"CMYK"}
```

detailed output with `-v` option:
```bash
cat input.json | jstream -v -d -1

depth	start	end	type   | value
2	018	023	string | "RGB"

    validations:
      required: true
  - type: input
    id: gradle-version
    attributes:
      label: Gradle version
      description: What version of Gradle are you running?
    validations:
      required: true
  - type: input
    id: gradle-old-version
    attributes:
      label: Gradle version that used to work

timepicker.pull-right .bootstrap-timepicker-widget.dropdown-menu:before{left:auto;right:12px}.bootstrap-timepicker.pull-right .bootstrap-timepicker-widget.dropdown-menu:after{left:auto;right:13px}.bootstrap-timepicker .input-group-addon{cursor:pointer}.bootstrap-timepicker .input-group-addon i{display:inline-block;width:16px;height:16px}.bootstrap-timepicker-widget.dropdown-menu{padding:4px}.bootstrap-timepicker-widget.dropdown-menu.open{display:inline-block}.bootstrap-timepicker-widget.dropdown...

```sh
cat > example.rego <<EOF
package httpapi.authz

import input

default allow = false

# Allow the root user to perform any action.
allow {
 input.owner == true
}

# All other users may do anything other than call PutObject
allow {
 input.action != "s3:PutObject"
 input.owner == false
}
EOF
```

Then load the policy via OPA's REST API.

```

                    "loc": ["query", "token"],
                    "msg": "Field required",
                    "input": None,
                },
                {
                    "type": "missing",
                    "loc": ["header", "x-token"],
                    "msg": "Field required",
                    "input": None,
                },
            ]
        }
    ) | IsDict(

                    "loc": ["body", "grant_type"],
                    "msg": "Field required",
                    "input": None,
                },
                {
                    "type": "missing",
                    "loc": ["body", "username"],
                    "msg": "Field required",
                    "input": None,
                },
                {
                    "type": "missing",

    protected Result saveImage(final ImageInputStream input, final File outputFile) throws IOException {
        final FessConfig fessConfig = ComponentUtil.getFessConfig();
        final Iterator<ImageReader> readers = ImageIO.getImageReaders(input);
        if (readers.hasNext()) {
            final ImageReader reader = readers.next();
            try {
                reader.setInput(input);

	}, {
		input: makeInput(FormatGNU, "",
			makeSparseStrings(sparseDatas{{10 << 30, 512}, {20 << 30, 512}})...),
		wantMap: sparseDatas{{10 << 30, 512}, {20 << 30, 512}},
	}}

	for i, v := range vectors {
		var blk block
		var hdr Header
		v.input = v.input[copy(blk[:], v.input):]
		tr := Reader{r: bytes.NewReader(v.input)}
		got, err := tr.readOldGNUSparseMap(&hdr, &blk)
		if !slices.Equal(got, v.wantMap) {

	}
}

// NewLexer returns a lexer for the named file and the given link context.
func NewLexer(name string) TokenReader {
	input := NewInput(name)
	fd, err := os.Open(name)
	if err != nil {
		log.Fatalf("%s\n", err)
	}
	input.Push(NewTokenizer(name, fd, fd))
	return input
}

// The other files in this directory each contain an implementation of TokenReader.