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// Copyright (c) Tailscale Inc & AUTHORS
// SPDX-License-Identifier: BSD-3-Clause
package main
import (
"bytes"
"fmt"
"go/ast"
"go/parser"
"go/token"
"go/types"
"testing"
"tailscale.com/util/codegen"
)
func TestViewerImports(t *testing.T) {
tests := []struct {
name string
content string
typeNames []string
wantImports [][2]string
}{
{
name: "Map",
content: `type Test struct { Map map[string]int }`,
typeNames: []string{"Test"},
wantImports: [][2]string{{"", "tailscale.com/types/views"}},
},
{
name: "Slice",
content: `type Test struct { Slice []int }`,
typeNames: []string{"Test"},
wantImports: [][2]string{{"", "tailscale.com/types/views"}},
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
fset := token.NewFileSet()
f, err := parser.ParseFile(fset, "test.go", "package test\n\n"+tt.content, 0)
if err != nil {
fmt.Println("Error parsing:", err)
return
}
info := &types.Info{
Types: make(map[ast.Expr]types.TypeAndValue),
}
conf := types.Config{}
pkg, err := conf.Check("", fset, []*ast.File{f}, info)
if err != nil {
t.Fatal(err)
}
var fieldComments map[fieldNameKey]string // don't need it for this test.
var output bytes.Buffer
tracker := codegen.NewImportTracker(pkg)
for i := range tt.typeNames {
typeName, ok := pkg.Scope().Lookup(tt.typeNames[i]).(*types.TypeName)
if !ok {
t.Fatalf("type %q does not exist", tt.typeNames[i])
}
namedType, ok := typeName.Type().(*types.Named)
if !ok {
t.Fatalf("%q is not a named type", tt.typeNames[i])
}
genView(&output, tracker, namedType, fieldComments)
}
for _, pkg := range tt.wantImports {
if !tracker.Has(pkg[0], pkg[1]) {
t.Errorf("missing import %q", pkg)
}
}
})
}
}
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