#! /usr/bin/env python3

# $Id$
# Author: David Goodger <goodger@python.org>
# Copyright: This module has been placed in the public domain.

"""
Tests for states.py.
"""

from pathlib import Path
import sys
import unittest

if __name__ == '__main__':
    # prepend the "docutils root" to the Python library path
    # so we import the local `docutils` package.
    sys.path.insert(0, str(Path(__file__).resolve().parents[3]))

from docutils.frontend import get_default_settings
from docutils.parsers.rst import Parser
from docutils.utils import new_document


class ParserTestCase(unittest.TestCase):
    def test_parser(self):
        parser = Parser()
        settings = get_default_settings(Parser)
        settings.warning_stream = ''
        for name, cases in totest.items():
            for casenum, (case_input, case_expected) in enumerate(cases):
                with self.subTest(id=f'totest[{name!r}][{casenum}]'):
                    document = new_document('test data', settings.copy())
                    parser.parse(case_input, document)
                    output = document.pformat()
                    self.assertEqual(output, case_expected)


totest = {}

totest['line_blocks'] = [
["""\
| This is a line block.
| Line breaks are *preserved*.

| This is a second line block.

| This is a third.
""",
"""\
<document source="test data">
    <line_block>
        <line>
            This is a line block.
        <line>
            Line breaks are \n\
            <emphasis>
                preserved
            .
    <line_block>
        <line>
            This is a second line block.
    <line_block>
        <line>
            This is a third.
"""],
["""\
| In line blocks,
|     Initial indentation is *also* preserved.
""",
"""\
<document source="test data">
    <line_block>
        <line>
            In line blocks,
        <line_block>
            <line>
                Initial indentation is \n\
                <emphasis>
                    also
                 preserved.
"""],
["""\
| Individual lines in line blocks
  *may* wrap, as indicated by the lack of a vertical bar prefix.
| These are called "continuation lines".
""",
"""\
<document source="test data">
    <line_block>
        <line>
            Individual lines in line blocks
            <emphasis>
                may
             wrap, as indicated by the lack of a vertical bar prefix.
        <line>
            These are called "continuation lines".
"""],
["""\
| Inline markup in line blocks may also wrap *to
  continuation lines*.
| But not to following lines.
""",
"""\
<document source="test data">
    <line_block>
        <line>
            Inline markup in line blocks may also wrap \n\
            <emphasis>
                to
                continuation lines
            .
        <line>
            But not to following lines.
"""],
["""\
\\| This is not a line block.
The vertical bar is simply part of a paragraph.
""",
"""\
<document source="test data">
    <paragraph>
        | This is not a line block.
        The vertical bar is simply part of a paragraph.
"""],
["""\
| This line block is incomplete.
There should be a blank line before this paragraph.
""",
"""\
<document source="test data">
    <line_block>
        <line>
            This line block is incomplete.
    <system_message level="2" line="2" source="test data" type="WARNING">
        <paragraph>
            Line block ends without a blank line.
    <paragraph>
        There should be a blank line before this paragraph.
"""],
["""\
| This line block contains
|
| blank lines.
""",
"""\
<document source="test data">
    <line_block>
        <line>
            This line block contains
        <line>
        <line>
            blank lines.
"""],
["""\
| The blank lines in this block
|   \n\
|       \n\
| have bogus spaces.
""",
"""\
<document source="test data">
    <line_block>
        <line>
            The blank lines in this block
        <line>
        <line>
        <line>
            have bogus spaces.
"""],
["""\
| Initial indentation is also significant and preserved:
|
|     Indented 4 spaces
| Not indented
|   Indented 2 spaces
|     Indented 4 spaces
|  Only one space
|
|     Continuation lines may be indented less
  than their base lines.
""",
"""\
<document source="test data">
    <line_block>
        <line>
            Initial indentation is also significant and preserved:
        <line>
        <line_block>
            <line>
                Indented 4 spaces
        <line>
            Not indented
        <line_block>
            <line_block>
                <line>
                    Indented 2 spaces
                <line_block>
                    <line>
                        Indented 4 spaces
            <line>
                Only one space
            <line>
            <line_block>
                <line>
                    Continuation lines may be indented less
                    than their base lines.
"""],
["""\
|
| This block begins and ends with blank lines.
|
""",
"""\
<document source="test data">
    <line_block>
        <line>
        <line>
            This block begins and ends with blank lines.
        <line>
"""],
["""\
This is not
| a line block.
""",
"""\
<document source="test data">
    <paragraph>
        This is not
        | a line block.
"""],
["""\
|   The first line is indented.
|     The second line is more indented.
""",
"""\
<document source="test data">
    <line_block>
        <line>
            The first line is indented.
        <line_block>
            <line>
                The second line is more indented.
"""],
["""\
|     The first line is indented.
|   The second line is less indented.
""",
"""\
<document source="test data">
    <line_block>
        <line_block>
            <line>
                The first line is indented.
        <line>
            The second line is less indented.
"""],
["""\
|This is not
|a line block

| This is an
|incomplete line block.
""",
"""\
<document source="test data">
    <paragraph>
        <problematic ids="problematic-1" refid="system-message-1">
            |
        This is not
        <problematic ids="problematic-2" refid="system-message-2">
            |
        a line block
    <system_message backrefs="problematic-1" ids="system-message-1" level="2" line="1" source="test data" type="WARNING">
        <paragraph>
            Inline substitution_reference start-string without end-string.
    <system_message backrefs="problematic-2" ids="system-message-2" level="2" line="1" source="test data" type="WARNING">
        <paragraph>
            Inline substitution_reference start-string without end-string.
    <line_block>
        <line>
            This is an
    <system_message level="2" line="5" source="test data" type="WARNING">
        <paragraph>
            Line block ends without a blank line.
    <paragraph>
        <problematic ids="problematic-3" refid="system-message-3">
            |
        incomplete line block.
    <system_message backrefs="problematic-3" ids="system-message-3" level="2" line="5" source="test data" type="WARNING">
        <paragraph>
            Inline substitution_reference start-string without end-string.
"""],
["""\
| Inline markup *may not
| wrap* over several lines.
""",
"""\
<document source="test data">
    <line_block>
        <line>
            Inline markup \n\
            <problematic ids="problematic-1" refid="system-message-1">
                *
            may not
        <line>
            wrap* over several lines.
    <system_message backrefs="problematic-1" ids="system-message-1" level="2" line="1" source="test data" type="WARNING">
        <paragraph>
            Inline emphasis start-string without end-string.
"""],
["""\
| * Block level markup
| * is not recognized.
""",
"""\
<document source="test data">
    <line_block>
        <line>
            * Block level markup
        <line>
            * is not recognized.
"""],
["""\
System messages can appear in place of lines:

| `uff <test1>`_
| `uff <test2>`_
""",
"""\
<document source="test data">
    <paragraph>
        System messages can appear in place of lines:
    <line_block>
        <line>
            <reference name="uff" refuri="test1">
                uff
            <target dupnames="uff" ids="uff" refuri="test1">
        <system_message backrefs="uff-1" level="2" line="3" source="test data" type="WARNING">
            <paragraph>
                Duplicate explicit target name: "uff".
        <line>
            <reference name="uff" refuri="test2">
                uff
            <target dupnames="uff" ids="uff-1" refuri="test2">
"""],
]


if __name__ == '__main__':
    unittest.main()