plan/plan_test.go
// Copyright © 2016 Asteris, 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.
package plan_test
import (
"testing"
"github.com/asteris-llc/converge/graph"
"github.com/asteris-llc/converge/graph/node"
"github.com/asteris-llc/converge/helpers/faketask"
"github.com/asteris-llc/converge/helpers/logging"
"github.com/asteris-llc/converge/plan"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
"golang.org/x/net/context"
)
func TestPlanNoOp(t *testing.T) {
defer logging.HideLogs(t)()
g := graph.New()
task := faketask.NoOp()
g.Add(node.New("root", task))
require.NoError(t, g.Validate())
// test that running this results in an appropriate result
planned, err := plan.Plan(context.Background(), g)
assert.NoError(t, err)
result := getResult(t, planned, "root")
assert.Equal(t, task.Status, result.Status.Messages()[0])
assert.False(t, result.Status.HasChanges())
assert.Equal(t, task, result.Task)
}
// TestPlanNilAndError test for panics in plan/pipeline.go
func TestPlanNilAndError(t *testing.T) {
g := graph.New()
task := faketask.NilAndError()
g.Add(node.New("root", task))
// test that running this results in an appropriate result
planned, err := plan.Plan(context.Background(), g)
assert.Error(t, err)
result := getResult(t, planned, "root")
assert.False(t, result.Status.HasChanges())
assert.Equal(t, task, result.Task)
}
func TestPlanErrorsBelow(t *testing.T) {
defer logging.HideLogs(t)()
g := graph.New()
g.Add(node.New("root", faketask.NoOp()))
g.Add(node.New("root/err", faketask.Error()))
g.Connect("root", "root/err")
require.NoError(t, g.Validate())
// planning will return an error if any of the leaves error, but it won't even
// touch vertices that are higher up. This test should show an error in the
// leafmost node, and not the root.
out, err := plan.Plan(context.Background(), g)
assert.Equal(t, plan.ErrTreeContainsErrors, err)
errMeta, ok := out.Get("root/err")
require.True(t, ok)
errNode, ok := errMeta.Value().(*plan.Result)
require.True(t, ok)
assert.Error(t, errNode.Error())
rootMeta, ok := out.Get("root")
require.True(t, ok)
rootNode, ok := rootMeta.Value().(*plan.Result)
require.True(t, ok)
assert.EqualError(t, rootNode.Error(), `error in dependency "root/err"`)
}
func getResult(t *testing.T, src *graph.Graph, key string) *plan.Result {
meta, ok := src.Get(key)
require.True(t, ok, "%q was not present in the graph", key)
result, ok := meta.Value().(*plan.Result)
require.True(t, ok, "needed a %T for %q, got a %T", result, key, meta.Value())
return result
}