Add molecule with some simple test cases

Signed-off-by: Colin Wilk <colin.wilk@tum.de>

5 files changed, 111 insertions, 0 deletions

diff --git a/molecule/.gitignore b/molecule/.gitignore
new file mode 100644
index 0000000..bee8a64
--- /dev/null
+++ b/molecule/.gitignore
@@ -0,0 +1 @@
+__pycache__
diff --git a/molecule/default/Dockerfile.j2 b/molecule/default/Dockerfile.j2
new file mode 100644
index 0000000..42750e4
--- /dev/null
+++ b/molecule/default/Dockerfile.j2
@@ -0,0 +1,12 @@
+FROM {{ item.image }}
+
+# Install dependencies.
+RUN apt-get update \
+    && apt-get install -y --no-install-recommends \
+       sudo wget \
+       python3-pip python3-dev python3-setuptools python3-wheel python3-apt \
+    && rm -rf /var/lib/apt/lists/* \
+    && rm -Rf /usr/share/doc && rm -Rf /usr/share/man \
+    && apt-get clean
+
+ENTRYPOINT ["bash", "-c", "sleep infinity"]
diff --git a/molecule/default/converge.yml b/molecule/default/converge.yml
new file mode 100644
index 0000000..f9bd174
--- /dev/null
+++ b/molecule/default/converge.yml
@@ -0,0 +1,43 @@
+---
+- name: Converge
+  hosts: application
+  pre_tasks:
+    - name: Create targets
+      ansible.builtin.file:
+        path: '{{ item }}'
+        state: touch
+        modification_time: preserve
+        access_time: preserve
+        mode: '0644'
+      become: true
+      delegate_to: '{{ prometheus_target_host }}'
+      loop:
+        - /opt/target1.yml
+        - /opt/target2.yml
+        - /opt/target3.yml
+
+  vars:
+    prometheus_target_handler_command_enabled: true
+    prometheus_target_handler_command:
+      cmd: echo test
+    prometheus_target_handler_shell_enabled: true
+    prometheus_target_handler_shell:
+      cmd: echo test
+    prometheus_target_exporter_defaults:
+      node_exporter:
+        path: /opt/target1.yml
+        host: '{{ inventory_hostname }}'
+      blackbox_exporter:
+        path: /opt/target2.yml
+        host: '{{ inventory_hostname }}_AA'
+
+  roles:
+    - role: kliwniloc.prometheus_target
+      prometheus_target_exporter:
+        - id: node_exporter
+        - { id: blackbox_exporter, host: test1 }
+        - { id: blackbox_exporter, host: test2 }
+    - role: kliwniloc.prometheus_target
+      prometheus_target_exporter:
+        - id: blackbox_exporter
+          path: /opt/target3.yml
diff --git a/molecule/default/molecule.yml b/molecule/default/molecule.yml
new file mode 100644
index 0000000..a8623d0
--- /dev/null
+++ b/molecule/default/molecule.yml
@@ -0,0 +1,39 @@
+---
+dependency:
+  name: galaxy
+
+
+driver:
+  name: docker
+
+
+platforms:
+
+  - name: application
+    image: ${MOLECULE_DISTRO:-debian:10}
+    dockerfile: Dockerfile.j2
+    pre_build_image: false
+    docker_networks:
+      - name: molecule-container-net
+        driver_options:
+          # Setting the mtu size due to issues with docker and VPN
+          com.docker.network.driver.mtu: 1420
+    networks:
+      - name: molecule-container-net
+
+  - name: prometheus
+    image: ${MOLECULE_DISTRO:-debian:10}
+    dockerfile: Dockerfile.j2
+    pre_build_image: false
+    networks:
+      - name: molecule-container-net
+
+
+provisioner:
+  name: ansible
+  playbooks:
+    converge: ${MOLECULE_PLAYBOOK:-converge.yml}
+
+
+verifier:
+  name: testinfra
diff --git a/molecule/default/tests/test_check_prometheus_targets.py b/molecule/default/tests/test_check_prometheus_targets.py
new file mode 100644
index 0000000..8a0f413
--- /dev/null
+++ b/molecule/default/tests/test_check_prometheus_targets.py
@@ -0,0 +1,16 @@
+testinfra_hosts = ['prometheus']
+
+
+def test_check_hosts_added(host):
+    t1 = host.file('/opt/target1.yml')
+    t2 = host.file('/opt/target2.yml')
+    t3 = host.file('/opt/target3.yml')
+
+    assert t1.exists
+    assert t2.exists
+    assert t3.exists
+
+    assert '  - application' in t1.content_string
+    assert '  - test1' in t2.content_string
+    assert '  - test2' in t2.content_string
+    assert '  - application_AA' in t3.content_string