69 lines
3.1 KiB
Python
69 lines
3.1 KiB
Python
"""Tests for reading the newest recipe version out of what 'abra recipe versions -m' writes."""
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import json
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import os
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import sys
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import click
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import pytest
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sys.path.insert(0, os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
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import alakazam
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from alakazam import get_latest_version, parse_machine_output
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# one document per recipe version, each listing the images of that version, as abra writes it
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GRIST_VERSIONS = (
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'[{"name":"gristlabs/grist-oss","service":"app","tag":"1.7.19","version":"3.6.4+1.7.19"},'
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'{"name":"redis","service":"redis","tag":"8.10-alpine","version":"3.6.4+1.7.19"}]\n'
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'[{"name":"gristlabs/grist-oss","service":"app","tag":"1.7.18","version":"3.6.3+1.7.18"},'
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'{"name":"redis","service":"redis","tag":"8.10-alpine","version":"3.6.3+1.7.18"}]\n'
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'[{"name":"gristlabs/grist","service":"app","tag":"1.1.12","version":"1.0.0+1.1.12"},'
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'{"name":"postgres","service":"db","tag":"13","version":"1.0.0+1.1.12"}]\n'
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)
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class TestParseMachineOutput:
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def test_several_documents_are_read_as_a_list(self):
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"""A plain json.loads() stops after the first line with "Extra data"."""
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assert len(parse_machine_output(GRIST_VERSIONS)) == 3
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def test_a_single_document_stays_one_document(self):
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assert parse_machine_output('{"a.org": {"apps": []}}') == {"a.org": {"apps": []}}
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def test_a_single_list_stays_one_list(self):
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assert parse_machine_output('[{"name": "db_password"}]') == [{"name": "db_password"}]
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def test_blank_lines_are_skipped(self):
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assert parse_machine_output('{"a": 1}\n\n{"b": 2}\n') == [{"a": 1}, {"b": 2}]
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def test_output_that_is_no_json_at_all_still_raises(self):
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"""Swallowing it would turn a broken abra call into an empty but plausible answer."""
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with pytest.raises(json.JSONDecodeError):
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parse_machine_output("FATA something went wrong")
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class TestGetLatestVersion:
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def install(self, monkeypatch, output):
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monkeypatch.setattr(alakazam, "abra", lambda *a, **k: parse_machine_output(output))
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def test_the_newest_version_is_taken(self, monkeypatch):
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self.install(monkeypatch, GRIST_VERSIONS)
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assert get_latest_version("grist") == "3.6.4+1.7.19"
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def test_the_order_of_the_documents_does_not_matter(self, monkeypatch):
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self.install(monkeypatch, "\n".join(reversed(GRIST_VERSIONS.strip().splitlines())))
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assert get_latest_version("grist") == "3.6.4+1.7.19"
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def test_a_single_flat_document_is_read_too(self, monkeypatch):
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"""Which is what abra writes for a recipe that has exactly one version."""
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self.install(monkeypatch, '[{"name":"redis","tag":"8.10","version":"1.0.0+1.1.12"}]')
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assert get_latest_version("grist") == "1.0.0+1.1.12"
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def test_a_recipe_without_versions_is_reported(self, monkeypatch):
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"""Reaching for the newest of nothing would end in an IndexError with no hint in it."""
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monkeypatch.setattr(alakazam, "abra", lambda *a, **k: {})
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with pytest.raises(click.ClickException) as excinfo:
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get_latest_version("grist")
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assert "no versions for grist" in excinfo.value.message
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