asteris-llc/converge

// 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 param_test

import (
    "fmt"
    "testing"

    "github.com/asteris-llc/converge/helpers/fakerenderer"
    "github.com/asteris-llc/converge/resource"
    "github.com/asteris-llc/converge/resource/param"
    "github.com/stretchr/testify/assert"
    "github.com/stretchr/testify/require"
    "golang.org/x/net/context"
)

func TestPreparerInterface(t *testing.T) {
    t.Parallel()

    assert.Implements(t, (*resource.Resource)(nil), new(param.Preparer))
}

func TestPreparerDefault(t *testing.T) {
    t.Parallel()

    vals := []interface{}{"x", true, 1, 1.0}

    for _, val := range vals {
        prep := &param.Preparer{Default: val}

        result, err := prep.Prepare(context.Background(), fakerenderer.New())
        assert.NoError(t, err)

        resultParam, ok := result.(*param.Param)
        require.True(t, ok, fmt.Sprintf("expected %T, got %T", resultParam, result))

        require.Nil(t, err)
        assert.Equal(t, prep.Default, resultParam.Val)
    }
}

func TestPreparerProvided(t *testing.T) {
    t.Parallel()

    prep := &param.Preparer{Default: "x"}

    result, err := prep.Prepare(context.Background(), fakerenderer.NewWithValue("y"))

    resultParam, ok := result.(*param.Param)
    require.True(t, ok, fmt.Sprintf("expected %T, got %T", resultParam, result))

    require.Nil(t, err)
    assert.Equal(t, "y", resultParam.Val)
}

func TestPreparerRequired(t *testing.T) {
    t.Parallel()

    name := "required-param"
    id := fmt.Sprintf("root/module.nested/param.%s", name)
    prep := new(param.Preparer)
    _, err := prep.Prepare(context.Background(), fakerenderer.NewWithID(id))

    if assert.Error(t, err) {
        assert.EqualError(t, err, fmt.Sprintf("%s param is required", name))
    }
}