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120 lines
3.6 KiB
Python
Executable File
120 lines
3.6 KiB
Python
Executable File
#!/usr/bin/env python
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#
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# Glances - An eye on your system
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#
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# SPDX-FileCopyrightText: 2026 Nicolas Hennion <nicolas@nicolargo.com>
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#
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# SPDX-License-Identifier: LGPL-3.0-only
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#
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"""A row survives while any of its hide_zero fields is still visible.
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hide_zero is decided per field, but it is applied per row: msg_curse drops a
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disk only when *all* of its hide_zero_fields are hidden. plugin-diskio.vue and
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plugin-network.vue read the same views dict and must reach the same verdict, so
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these tests pin the rule on the side that can be tested here.
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The half-hidden state -- one rate above the threshold, the other below -- is the
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one where an "all fields visible" reading and an "all fields hidden" reading
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disagree, so that is what the tests build.
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"""
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import os
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from argparse import Namespace
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import pytest
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from glances.config import Config
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from glances.plugins.diskio import DiskioPlugin
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READ = 'read_bytes_rate_per_sec'
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WRITE = 'write_bytes_rate_per_sec'
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THRESHOLD = 1024
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def args():
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"""The plugin only draws when it is enabled, so msg_curse needs real args."""
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return Namespace(
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disable_diskio=False,
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diskio_iops=False,
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diskio_latency=False,
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diskio_show_ramfs=False,
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disable_history=True,
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)
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@pytest.fixture
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def plugin(tmp_path):
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config_file = tmp_path / 'glances.conf'
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config_file.write_text(
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f'[diskio]\nhide_zero=True\nhide_threshold_bytes={THRESHOLD}\n',
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encoding='utf-8',
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)
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return DiskioPlugin(args=args(), config=Config(config_dir=os.fspath(config_file)))
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def disk(read_rate, write_rate, name='sda'):
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return {
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'disk_name': name,
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'key': 'disk_name',
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'time_since_update': 1.0,
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'read_count': 0,
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'write_count': 0,
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'read_bytes': 0,
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'write_bytes': 0,
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'read_latency': 0,
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'write_latency': 0,
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READ: read_rate,
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WRITE: write_rate,
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'read_count_rate_per_sec': 0,
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'write_count_rate_per_sec': 0,
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}
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def sample(plugin, *disks):
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plugin.stats = list(disks)
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plugin.update_views()
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return plugin.views
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def curse_text(plugin):
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return ''.join(line['msg'] for line in plugin.msg_curse(args=plugin.args, max_width=40))
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class TestHalfHiddenRow:
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"""One rate above the threshold, the other below."""
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def test_the_two_fields_really_do_disagree(self, plugin):
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# Without this the tests below would pass on any rule at all.
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sample(plugin, disk(0, 0))
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views = sample(plugin, disk(THRESHOLD * 2, 0))
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assert views['sda'][READ]['hidden'] is False
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assert views['sda'][WRITE]['hidden'] is True
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def test_a_read_only_disk_is_still_displayed(self, plugin):
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sample(plugin, disk(0, 0))
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sample(plugin, disk(THRESHOLD * 2, 0))
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assert 'sda' in curse_text(plugin)
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def test_a_write_only_disk_is_still_displayed(self, plugin):
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sample(plugin, disk(0, 0))
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sample(plugin, disk(0, THRESHOLD * 2))
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assert 'sda' in curse_text(plugin)
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class TestFullyHiddenRow:
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"""Every field hidden is the only reason to drop a row."""
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def test_a_disk_below_the_threshold_on_both_rates_is_dropped(self, plugin):
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sample(plugin, disk(0, 0))
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sample(plugin, disk(THRESHOLD - 500, THRESHOLD - 500))
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assert 'sda' not in curse_text(plugin)
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def test_a_busy_disk_is_displayed_beside_a_hidden_one(self, plugin):
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sample(plugin, disk(0, 0, 'quiet'), disk(0, 0, 'busy'))
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sample(plugin, disk(0, 0, 'quiet'), disk(THRESHOLD * 2, THRESHOLD * 2, 'busy'))
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text = curse_text(plugin)
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assert 'busy' in text
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assert 'quiet' not in text
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