1 files changed, 194 insertions, 0 deletions
diff --git a/tests/test_json_instances.py b/tests/test_json_instances.py
new file mode 100644
index 0000000..fd09ce1
--- /dev/null
+++ b/tests/test_json_instances.py
@@ -0,0 +1,194 @@
+# SPDX-License-Identifier: CC0-1.0
+
+# Copyright (C) 2022 Wojtek Kosior <koszko@koszko.org>
+#
+# Available under the terms of Creative Commons Zero v1.0 Universal.
+
+import pytest
+import re
+
+from hydrilla import json_instances, versions
+from hydrilla.exceptions import HaketiloException
+
+sample_json_no_comments = '{\n"so/me":\n"//json//"\n}\n'
+
+@pytest.mark.parametrize('_in', [
+    '{\n"so/me":\n"//json//"\n}\n',
+    '{//we\n"so/me"://will\n"//json//"//rock\n}//you\n'
+])
+def test_strip_json_comments(_in):
+    """...."""
+    assert json_instances.strip_json_comments(_in) == sample_json_no_comments
+
+@pytest.mark.parametrize('_in, line, char', [
+    ('/{\n"so/me":\n"//json//"\n}\n',                                 1, 1),
+    ('{\n"so/me":/\n"//json//"\n}/\n',                                2, 9),
+    ('{\n"so/me":/ huehue, I am an invalid comment\n"//json//"\n}\n', 2, 9)
+])
+def test_strip_json_comments_bad(_in, line, char):
+    """...."""
+    error_regex = f'^bad_json_comment_line_{line}_char_{char}$'
+    with pytest.raises(HaketiloException, match=error_regex):
+        json_instances.strip_json_comments(_in)
+
+@pytest.mark.parametrize('schema_name, full_schema_name', [
+    ('package_source-1.0.1.schema.json', 'package_source-1.0.1.schema.json'),
+    ('package_source-1.0.schema.json',   'package_source-1.0.1.schema.json'),
+    ('package_source-1.schema.json',     'package_source-1.0.1.schema.json'),
+    ('package_source-2.schema.json',     'package_source-2.schema.json')
+])
+def test_get_schema(schema_name, full_schema_name):
+    """...."""
+    url_prefix = 'https://hydrilla.koszko.org/schemas/'
+
+    for prefix in ('', url_prefix):
+        schema1 = json_instances._get_schema(prefix + schema_name)
+        assert schema1['$id'] == url_prefix + full_schema_name
+
+        schema2 = json_instances._get_schema(prefix + schema_name)
+        assert schema2 is schema1
+
+@pytest.mark.parametrize('_in', ['dummy_uri', {'$id': 'dummy_uri'}])
+def test_validator_for(_in, monkeypatch):
+    """...."""
+    def mocked_get_schema(schema_id):
+        """...."""
+        assert schema_id == 'dummy_uri'
+        return {'$id': 'dummy_uri'}
+
+    monkeypatch.setattr(json_instances, '_get_schema', mocked_get_schema)
+
+    def MockedRefResolver(base_uri, referrer, handlers):
+        """....<function replaces a class...>"""
+        assert base_uri == referrer['$id']
+        assert referrer == {'$id': 'dummy_uri'}
+        assert handlers == {'https': mocked_get_schema}
+        return 'dummy_resolver'
+
+    monkeypatch.setattr(json_instances, 'RefResolver', MockedRefResolver)
+
+    def MockedDraft7Validator(schema, resolver):
+        """....<same as above>"""
+        assert schema == {'$id': 'dummy_uri'}
+        assert resolver == 'dummy_resolver'
+        return 'dummy_validator'
+
+    monkeypatch.setattr(json_instances, 'Draft7Validator',
+                        MockedDraft7Validator)
+
+    assert json_instances.validator_for(_in) == 'dummy_validator'
+
+def test_parse_instance(monkeypatch):
+    """...."""
+    def mocked_strip_json_comments(text):
+        """...."""
+        assert text == 'dummy_commented_json'
+        return '{"dummy": 1}'
+
+    monkeypatch.setattr(json_instances, 'strip_json_comments',
+                        mocked_strip_json_comments)
+
+    assert json_instances.parse_instance('dummy_commented_json') == {'dummy': 1}
+
+
+def test_read_instance(monkeypatch, tmpdir):
+    """...."""
+    def mocked_parse_instance(text):
+        """...."""
+        assert text == 'dummy_JSON_text'
+        return {'dummy': 1}
+
+    monkeypatch.setattr(json_instances, 'parse_instance', mocked_parse_instance)
+
+    somepath = tmpdir / 'somefile'
+    somepath.write_text('dummy_JSON_text')
+
+    for instance_or_path in (somepath, str(somepath), {'dummy': 1}):
+        assert json_instances.read_instance(instance_or_path) == {'dummy': 1}
+
+def test_read_instance_bad(monkeypatch, tmpdir):
+    """...."""
+    monkeypatch.setattr(json_instances, 'parse_instance', lambda: 3 / 0)
+
+    somepath = tmpdir / 'somefile'
+    somepath.write_text('dummy_JSON_text')
+
+    error_regex = f'^err.util.text_in_{re.escape(str(somepath))}_not_valid_json$'
+    with pytest.raises(HaketiloException, match=error_regex):
+        json_instances.read_instance(somepath)
+
+@pytest.mark.parametrize('instance, ver_str', [
+    ({'$schema': 'a_b_c-1.0.1.0.schema.json'},   '1.0.1.0'),
+    ({'$schema': '9-9-9-10.5.600.schema.json'},  '10.5.600'),
+    ({'$schema': 'https://ab.cd-2.schema.json'}, '2')
+])
+def test_get_schema_version(instance, ver_str, monkeypatch):
+    """...."""
+    def mocked_parse_normalize(_ver_str):
+        """...."""
+        assert _ver_str == ver_str
+        return 'dummy_version'
+
+    monkeypatch.setattr(versions, 'parse_normalize', mocked_parse_normalize)
+
+    assert json_instances.get_schema_version(instance) == 'dummy_version'
+
+@pytest.mark.parametrize('instance', [
+    {'$schema': 'https://ab.cd-0.schema.json'},
+    {'$schema': 'https://ab.cd-02.schema.json'},
+    {'$schema': 'https://ab.cd-2.00.schema.json'},
+    {'$schema': 'https://ab.cd-2.01.schema.json'},
+    {'$schema': 'https://ab.cd-2.schema.json5'},
+    {'$schema': 'https://ab.cd-2.schema@json'},
+    {'$schema': 'https://ab.cd_2.schema.json'},
+    {'$schema': '2.schema.json'},
+    {'$schema': 'https://ab.cd-.schema.json'},
+    {'$schema': b'https://ab.cd-2.schema.json'},
+    {},
+    'not dict'
+])
+def test_get_schema_version_bad(instance):
+    """...."""
+    error_regex = '^no_schema_number_in_instance$'
+    with pytest.raises(HaketiloException, match=error_regex):
+        json_instances.get_schema_version(instance)
+
+def test_get_schema_major_number(monkeypatch):
+    """...."""
+    def mocked_get_schema_version(instance):
+        """...."""
+        assert instance == 'dummy_instance'
+        return (3, 4, 6)
+
+    monkeypatch.setattr(json_instances, 'get_schema_version',
+                        mocked_get_schema_version)
+
+    assert json_instances.get_schema_major_number('dummy_instance') == 3
+
+def test_validate_instance(monkeypatch):
+    """...."""
+    def mocked_get_schema_major_number(instance):
+        """...."""
+        assert instance == 'dummy_instance'
+        return 4
+
+    monkeypatch.setattr(json_instances, 'get_schema_major_number',
+                        mocked_get_schema_major_number)
+
+    class mocked_validator_for:
+        """....<class instead of function>"""
+        def __init__(self, schema_name):
+            """...."""
+            assert schema_name == 'https://ab.cd/something-4.schema.json'
+
+        def validate(self, instance):
+            """...."""
+            assert instance == 'dummy_instance'
+
+    monkeypatch.setattr(json_instances, 'validator_for', mocked_validator_for)
+
+    schema_name_fmt = 'https://ab.cd/something-{}.schema.json'
+    assert json_instances.validate_instance(
+        'dummy_instance',
+        schema_name_fmt
+    ) == 4