molecule test and idempotence

molecule/default/converge.yml

@@ -0,0 +1,28 @@
+---
+- name: Converge
+  hosts: all
+  vars:
+    lvm_groups:
+      - vgname: my_vg
+        disks:
+          - /dev/sdb1
+        create: true
+        lvnames:
+          - lvname: my_lv
+            size: 40%VG
+            opts: "--wipesignatures y"
+            create: true
+            filesystem: ext4
+            mntp: "/var/lib/mountpoint"
+          - lvname: my_lv2
+            size: 10%VG
+            opts: "--wipesignatures y"
+            create: true
+            filesystem: ext4
+            mntp: "/var/lib/mountpoint2"
+    manage_lvm: true
+
+  tasks:
+    - name: "Include lvm"
+      include_role:
+        name: "ansible-manage-lvm"

molecule/default/molecule.yml

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+---
+driver:
+  name: vagrant
+  provider:
+    name: virtualbox
+lint: yamllint . && flake8 && ansible-lint --exclude=meta
+platforms:
+  - name: Fedora-Molecule-LVM
+    box: bento/fedora-31
+    # box-url: ${platform_root}/packer/bento/builds/fedora-31-x86_64.virtualbox.box
+    provider_override_args:
+      - "persistent_storage.enabled = true"
+      - "persistent_storage.location = 'molecule-lvm.vdi'"
+      - "persistent_storage.size = 100"
+      - "persistent_storage.mount = false"
+      - "persistent_storage.diskdevice = '/dev/sdb'"
+provisioner:
+  name: ansible
+  inventory:
+    group_vars:
+      lvm:
+verifier:
+  name: testinfra
+  env:
+    PYTHONWARNINGS: "ignore:.*U.*mode is deprecated:DeprecationWarning"
+  options:
+    v: 1

molecule/default/tests/conftest.py

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+"""PyTest Fixtures."""
+from __future__ import absolute_import
+import os
+import pytest
+
+
+def pytest_runtest_setup(item):
+    """Run tests only when under molecule with testinfra installed."""
+    try:
+        import testinfra
+    except ImportError:
+        pytest.skip("Test requires testinfra", allow_module_level=True)
+    if "MOLECULE_INVENTORY_FILE" in os.environ:
+        pytest.testinfra_hosts = testinfra.utils.ansible_runner.AnsibleRunner(
+            os.environ["MOLECULE_INVENTORY_FILE"]
+        ).get_hosts("all")
+    else:
+        pytest.skip(
+            "Test should run only from inside molecule.",
+            allow_module_level=True
+        )

molecule/default/tests/test_default.py

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+"""Role testing files using testinfra."""
+
+
+def test_lvm_package_shall_be_installed(host):
+    assert host.package("lvm2").is_installed
+
+
+def test_non_persistent_volume_group_is_created(host):
+    command = """sudo vgdisplay | grep -c 'my_vg'"""
+    cmd = host.run(command)
+    assert '1' in cmd.stdout
+
+
+def test_mylv_logical_volume_is_created(host):
+    command = """sudo lvs -o lv_name  my_vg --separator='|' --noheadings \
+    | grep -c 'my_lv'"""
+    cmd = host.run(command)
+    assert int(cmd.stdout.rstrip()) >= 1
+
+
+def test_volume_is_mounted(host):
+    host.file("/var/lib/mountpoint").mode == 0o731