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// Copyright (c) 2020 Cisco and/or its affiliates.
//
// 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 binapigen
import (
"bufio"
"fmt"
"go.fd.io/govpp/binapigen/vppapi"
. "github.com/onsi/gomega"
"os"
"strings"
"testing"
)
func TestGoModule(t *testing.T) {
const expected = "go.fd.io/govpp/binapi"
impPath, err := resolveImportPath("../binapi")
if err != nil {
t.Fatalf("unexpected error: %v", err)
}
if impPath != expected {
t.Fatalf("expected: %q, got: %q", expected, impPath)
}
}
func TestBinapiTypeSizes(t *testing.T) {
tests := []struct {
name string
input string
expsize int
}{
{name: "basic1", input: "u8", expsize: 1},
{name: "basic2", input: "i8", expsize: 1},
{name: "basic3", input: "u16", expsize: 2},
{name: "basic4", input: "i32", expsize: 4},
{name: "string", input: "string", expsize: 1},
{name: "invalid1", input: "x", expsize: 0},
}
for _, test := range tests {
t.Run(test.name, func(t *testing.T) {
size := getSizeOfBinapiBaseType(test.input, 1)
if size != test.expsize {
t.Errorf("expected %d, got %d", test.expsize, size)
}
})
}
}
func TestBinapiUnionSizes(t *testing.T) {
RegisterTestingT(t)
// order of the union sizes in file generated from union.api.json
var sizes = []int{16, 4, 32, 16, 64, 111}
// remove directory created during test
defer func() {
err := os.RemoveAll(testOutputDir)
Expect(err).ToNot(HaveOccurred())
}()
err := GenerateFromFile("vppapi/testdata/union.api.json", Options{OutputDir: testOutputDir})
Expect(err).ShouldNot(HaveOccurred())
file, err := os.Open(testOutputDir + "/union/union.ba.go")
Expect(err).ShouldNot(HaveOccurred())
defer func() {
err := file.Close()
Expect(err).ToNot(HaveOccurred())
}()
// the generated line with union size is in format XXX_UnionData [<size>]byte
// the prefix identifies these lines (the starting tab is important)
prefix := fmt.Sprintf("\t%s", "XXX_UnionData [")
index := 0
scanner := bufio.NewScanner(file)
for scanner.Scan() {
if strings.HasPrefix(scanner.Text(), prefix) {
Expect(scanner.Text()).To(Equal(prefix + fmt.Sprintf("%d]byte", sizes[index])))
index++
}
}
// ensure all union sizes were found and tested
Expect(index).To(Equal(len(sizes)))
}
// Typed data used for union size evaluation testing.
type typeTestData struct {
typ string
value string
fields []*typeTestData
}
func (t typeTestData) getUnion(name string) *Union {
return &Union{
UnionType: vppapi.UnionType{Name: name},
Fields: t.getUnionFields(name),
}
}
func (t typeTestData) getUnionFields(parentName string) (fields []*Field) {
for i, field := range t.fields {
var (
dataType string
aliasType *Alias
enumType *Enum
structType *Struct
unionType *Union
)
switch field.typ {
case "alias":
aliasType = &Alias{AliasType: vppapi.AliasType{Name: fmt.Sprintf("%s_alias_%d", parentName, i), Type: field.value}}
case "enum":
enumType = &Enum{EnumType: vppapi.EnumType{Name: fmt.Sprintf("%s_enum_%d", parentName, i), Type: field.value}}
case "struct":
structType = &Struct{Fields: field.getUnionFields(fmt.Sprintf("%s_struct_%d", parentName, i))}
case "union":
unionType = field.getUnion(parentName)
default:
dataType = field.value
}
fields = append(fields, &Field{
Field: vppapi.Field{Name: fmt.Sprintf("%s_field_%d", parentName, i), Type: dataType},
TypeAlias: aliasType,
TypeEnum: enumType,
TypeStruct: structType,
TypeUnion: unionType,
})
}
return fields
}
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