94 lines
1.6 KiB
Go
94 lines
1.6 KiB
Go
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/*
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* Copyright 2022 CloudWeGo Authors
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package util
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import (
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"bytes"
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"go/format"
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"go/parser"
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"go/token"
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"testing"
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"golang.org/x/tools/go/ast/astutil"
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)
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func TestAddImport(t *testing.T) {
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inserts := [][]string{
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{
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"ctx",
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"context",
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},
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{
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"",
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"context",
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},
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}
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files := [][]string{
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{
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`package foo
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import (
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"fmt"
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"time"
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)
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`,
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`package foo
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import (
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ctx "context"
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"fmt"
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"time"
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)
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`,
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},
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{
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`package foo
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import (
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"fmt"
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"time"
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)
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`,
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`package foo
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import (
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"context"
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"fmt"
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"time"
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)
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`,
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},
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}
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for idx, file := range files {
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fset := token.NewFileSet()
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f, err := parser.ParseFile(fset, "", file[0], parser.ImportsOnly)
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if err != nil {
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t.Fatalf("can not parse ast for file")
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}
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astutil.AddNamedImport(fset, f, inserts[idx][0], inserts[idx][1])
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var output []byte
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buffer := bytes.NewBuffer(output)
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err = format.Node(buffer, fset, f)
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if err != nil {
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t.Fatalf("can add import for file")
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}
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if buffer.String() != file[1] {
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t.Fatalf("insert import fialed")
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}
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}
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}
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