mirror of
https://github.com/retspen/webvirtcloud
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f8e30d7668
The Resize tab's CPU, Memory and Disk panes were horizontal forms with bold host figures. The owner chose the ledger layout from three rendered options: each section with its heading, the VM's figures and the host's on the left, its fields on the right, and one line on what applies now and what at the next start. Codex reviewed resizing end to end; these are fixed: - A vCPU turned on or off while the VM runs is kept at its next start: libvirt was asked without flags, which changes the running VM only. - A paused VM offers to turn vCPUs on only: turning one off needs the guest, which does not run. - A smaller disk size is refused, and so is the rest of the form, before anything grows; it was skipped without a word. - vCPUs and memory below 1 are refused. - The memory fields are numbers filled with the VM's values: the "Custom value" box, its script and the preset list are gone; an empty custom field silently used the preset. - Units and words: MiB, not MB; a disk's field is its new size, with its size now above it; the messages say what the VM gets.
96 lines
5.2 KiB
Python
96 lines
5.2 KiB
Python
"""The Resize tab changes only what was asked, and refuses what libvirt would
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not apply as asked."""
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from unittest.mock import patch
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from accounts.models import UserInstance
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from appsettings.settings import get_settings
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from computes.models import Compute
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from django.contrib.auth import get_user_model
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from django.contrib.messages import get_messages
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from django.test import TestCase
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from django.urls import reverse
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from instances.models import Instance
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from libvirt import VIR_DOMAIN_RUNNING
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GIB = 1 << 30
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class ResizeInputTests(TestCase):
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def setUp(self):
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get_settings()
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self.user = get_user_model().objects.create_user("resize-user", password="pw")
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self.client.force_login(self.user)
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compute = Compute.objects.create(name="rs", hostname="192.0.2.1", login="u", password="p", type=1)
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self.vm = Instance.objects.create(compute=compute, name="rs-vm", uuid="13131313-0000-0000-0000-000000000000")
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UserInstance.objects.create(user=self.user, instance=self.vm, is_change=True)
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def post(self, view, data, status=5, disks=()):
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with patch("instances.views.utils.check_user_quota", return_value=""), patch(
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"instances.models.wvmInstance"
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) as wvm:
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proxy = wvm.return_value
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proxy.get_vcpu.return_value = 2
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proxy.get_memory.return_value = 2048
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proxy.get_cur_memory.return_value = 2048
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proxy.get_status.return_value = status
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proxy.instance.isActive.return_value = status != 5
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proxy.get_disk_devices.return_value = [dict(disk) for disk in disks]
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response = self.client.post(reverse(view, args=[self.vm.id]), data)
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self.assertEqual(response.status_code, 302)
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return [str(m) for m in get_messages(response.wsgi_request)], proxy
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def test_only_a_disk_given_a_larger_size_grows(self):
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# a 3.5 GiB disk left as it was is not grown; a disk outside a pool has no size
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disks = [{"dev": "vda", "size": 3 * GIB + GIB // 2}, {"dev": "vdb", "size": 20 * GIB}, {"dev": "vdc", "size": None}]
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messages, proxy = self.post("instances:resize_disk", {"disk_size_vda": "", "disk_size_vdb": "30"}, disks=disks)
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proxy.resize_disk.assert_called_once()
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self.assertEqual([(d["dev"], d["size_new"]) for d in proxy.resize_disk.call_args.args[0]], [("vdb", 30 * GIB)])
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self.assertEqual(messages, ["Disk is resized: vdb"])
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def test_a_smaller_disk_size_refuses_every_change(self):
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# a disk does not shrink: one smaller size leaves the others as they are too
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disks = [{"dev": "vda", "size": 10 * GIB}, {"dev": "vdb", "size": 20 * GIB}]
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messages, proxy = self.post("instances:resize_disk", {"disk_size_vda": "5", "disk_size_vdb": "30"}, disks=disks)
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proxy.resize_disk.assert_not_called()
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self.assertEqual(messages, ["vda is 10.0\xa0GB: a disk cannot shrink"])
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def test_vcpus_and_memory_must_be_at_least_one(self):
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for view, data, setter in (("instances:resizevm_cpu", {"vcpu": "2", "cur_vcpu": "0"}, "resize_cpu"),
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("instances:resize_memory", {"memory": "2048", "cur_memory": "-1"}, "resize_mem")):
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with self.subTest(view):
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messages, proxy = self.post(view, data)
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getattr(proxy, setter).assert_not_called()
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self.assertTrue(messages[-1].startswith("Enter a whole number"), messages)
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def test_a_cpu_resize_says_what_the_vm_gets(self):
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messages, proxy = self.post("instances:resizevm_cpu", {"vcpu": "4", "cur_vcpu": "2"})
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proxy.resize_cpu.assert_called_once_with("2", "4")
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self.assertEqual(messages, ["vCPUs set to 2 (maximum 4)"])
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def test_a_disk_size_that_is_not_a_whole_number_is_refused(self):
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messages, proxy = self.post("instances:resize_disk", {"disk_size_vda": "4.5"}, disks=[{"dev": "vda", "size": GIB}])
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proxy.resize_disk.assert_not_called()
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self.assertEqual(messages, ["Enter disk sizes as whole GiB"])
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def test_vcpus_change_only_on_a_shut_off_vm(self):
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messages, proxy = self.post("instances:resizevm_cpu", {"vcpu": "4", "cur_vcpu": "4"}, status=VIR_DOMAIN_RUNNING)
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proxy.resize_cpu.assert_not_called()
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self.assertEqual(messages, ["Shut off the VM to change its vCPUs"])
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def test_current_vcpus_above_the_maximum_are_refused(self):
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messages, proxy = self.post("instances:resizevm_cpu", {"vcpu": "2", "cur_vcpu": "4"})
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proxy.resize_cpu.assert_not_called()
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self.assertEqual(messages, ["The current vCPUs cannot be more than the maximum"])
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def test_current_memory_above_the_maximum_is_refused(self):
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messages, proxy = self.post("instances:resize_memory", {"memory": "4096", "cur_memory": "8192"})
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proxy.resize_mem.assert_not_called()
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self.assertEqual(messages, ["The current memory cannot be more than the maximum"])
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def test_a_running_vm_offers_no_maximum_memory(self):
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with patch("instances.models.wvmInstance"):
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self.vm.__dict__["status"] = VIR_DOMAIN_RUNNING
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from django.template.loader import render_to_string
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html = render_to_string("instances/resize_tab.html", {"instance": self.vm, "can_change": True})
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self.assertRegex(html, r'<input [^>]*name="memory"[^>]*disabled>')
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