# Copyright 2019 Google LLC
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#      http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.


from kubernetes.client.models import (
    V1Volume, V1PersistentVolumeClaimVolumeSource
)

import kfp
from kfp.dsl import PipelineParam, VolumeOp, PipelineVolume
import unittest


class TestVolumeOp(unittest.TestCase):

    def test_basic(self):
        """Test basic usage."""
        def my_pipeline(param1, param2):
            vol = VolumeOp(
                name="myvol_creation",
                resource_name=param1,
                size=param2,
                annotations={"test": "annotation"}
            )

            self.assertCountEqual(
                [x.name for x in vol.inputs], ["param1", "param2"]
            )
            self.assertEqual(
                vol.k8s_resource.metadata.name,
                "{{workflow.name}}-%s" % str(param1)
            )
            expected_attribute_outputs = {
                "manifest": "{}",
                "name": "{.metadata.name}",
                "size": "{.status.capacity.storage}"
            }
            self.assertEqual(vol.attribute_outputs, expected_attribute_outputs)
            expected_outputs = {
                "manifest": PipelineParam(name="manifest", op_name=vol.name),
                "name": PipelineParam(name="name", op_name=vol.name),
                "size": PipelineParam(name="size", op_name=vol.name)
            }
            self.assertEqual(vol.outputs, expected_outputs)
            self.assertEqual(
                vol.output,
                PipelineParam(name="name", op_name=vol.name)
            )
            self.assertEqual(vol.dependent_names, [])
            expected_volume = PipelineVolume(
                name="myvol-creation",
                persistent_volume_claim=V1PersistentVolumeClaimVolumeSource(
                    claim_name=PipelineParam(name="name", op_name=vol.name)
                )
            )
        
        kfp.compiler.Compiler()._compile(my_pipeline)

    def test_delete(self):
        """Test delete method."""
        vop = VolumeOp(name="vop", resource_name="vop", size="1Gi")

        delete_vop = vop.delete()

        expected_name = str(vop.outputs['name'])

        self.assertEqual(delete_vop.command,
                         ['kubectl', 'delete', 'PersistentVolumeClaim',
                          expected_name, '--ignore-not-found', '--output',
                          'name', '--wait=false'])
        self.assertEqual(delete_vop.outputs, {})