472 lines
12 KiB
Go
472 lines
12 KiB
Go
package main
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import (
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"bytes"
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"fmt"
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"go/parser"
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"go/token"
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"io/ioutil"
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"path/filepath"
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"sort"
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"strconv"
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"strings"
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"testing"
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"zombiezen.com/go/capnproto2"
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"zombiezen.com/go/capnproto2/encoding/text"
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"zombiezen.com/go/capnproto2/internal/schema"
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)
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func readTestFile(name string) ([]byte, error) {
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path := filepath.Join("testdata", name)
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return ioutil.ReadFile(path)
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}
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func mustReadTestFile(t *testing.T, name string) []byte {
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data, err := readTestFile(name)
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if err != nil {
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t.Fatal(err)
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}
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return data
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}
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func mustReadGeneratorRequest(t *testing.T, name string) schema.CodeGeneratorRequest {
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data := mustReadTestFile(t, name)
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msg, err := capnp.Unmarshal(data)
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if err != nil {
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t.Fatalf("Unmarshaling %s: %v", name, err)
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}
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req, err := schema.ReadRootCodeGeneratorRequest(msg)
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if err != nil {
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t.Fatalf("Reading code generator request %s: %v", name, err)
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}
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return req
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}
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func TestBuildNodeMap(t *testing.T) {
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tests := []struct {
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name string
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fileID uint64
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fileNodes []uint64
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}{
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{
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name: "go.capnp.out",
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fileID: 0xd12a1c51fedd6c88,
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fileNodes: []uint64{
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0xbea97f1023792be0,
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0xe130b601260e44b5,
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0xc58ad6bd519f935e,
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0xa574b41924caefc7,
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0xc8768679ec52e012,
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0xfa10659ae02f2093,
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0xc2b96012172f8df1,
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},
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},
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{
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name: "group.capnp.out",
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fileID: 0x83c2b5818e83ab19,
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fileNodes: []uint64{
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0xd119fd352d8ea888, // the struct
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0x822357857e5925d4, // the group
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},
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},
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}
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for _, test := range tests {
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data, err := readTestFile(test.name)
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if err != nil {
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t.Errorf("readTestFile(%q): %v", test.name, err)
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continue
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}
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msg, err := capnp.Unmarshal(data)
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if err != nil {
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t.Errorf("Unmarshaling %s: %v", test.name, err)
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continue
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}
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req, err := schema.ReadRootCodeGeneratorRequest(msg)
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if err != nil {
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t.Errorf("Reading code generator request %s: %v", test.name, err)
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continue
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}
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nodes, err := buildNodeMap(req)
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if err != nil {
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t.Errorf("%s: buildNodeMap: %v", test.name, err)
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}
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f := nodes[test.fileID]
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if f == nil {
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t.Errorf("%s: node map is missing file node @%#x", test.name, test.fileID)
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continue
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}
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if f.Id() != test.fileID {
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t.Errorf("%s: node map has ID @%#x for lookup of @%#x", test.name, f.Id(), test.fileID)
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}
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// Test node.nodes collection
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for _, id := range test.fileNodes {
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found := false
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for _, fn := range f.nodes {
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if fn.Id() == id {
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found = true
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break
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}
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}
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if !found {
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t.Errorf("%s: missing @%#x from file nodes", test.name, id)
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}
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}
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// Test map lookup
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for _, k := range test.fileNodes {
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n := nodes[k]
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if n == nil {
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t.Errorf("%s: missing @%#x from node map", test.name, k)
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}
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if n.Id() != k {
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t.Errorf("%s: node map has ID @%#x for lookup of @%#x", test.name, n.Id(), k)
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}
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}
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}
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}
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func TestRemoteScope(t *testing.T) {
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type scopeTest struct {
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name string
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constID uint64
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initImports []importSpec
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remoteName string
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remoteNew string
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imports []importSpec
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}
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tests := []scopeTest{
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{
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name: "same-file struct",
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constID: 0x84efedc75e99768d, // scopes.fooVar
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remoteName: "Foo",
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remoteNew: "NewFoo",
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},
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{
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name: "different file struct",
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constID: 0x836faf1834d91729, // scopes.otherFooVar
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remoteName: "otherscopes.Foo",
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remoteNew: "otherscopes.NewFoo",
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imports: []importSpec{
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{name: "otherscopes", path: "zombiezen.com/go/capnproto2/capnpc-go/testdata/otherscopes"},
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},
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},
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{
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name: "same-file struct list",
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constID: 0xcda2680ec5c921e0, // scopes.fooListVar
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remoteName: "Foo_List",
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remoteNew: "NewFoo_List",
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},
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{
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name: "different file struct list",
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constID: 0x83e7e1b3cd1be338, // scopes.otherFooListVar
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remoteName: "otherscopes.Foo_List",
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remoteNew: "otherscopes.NewFoo_List",
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imports: []importSpec{
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{name: "otherscopes", path: "zombiezen.com/go/capnproto2/capnpc-go/testdata/otherscopes"},
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},
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},
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{
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name: "built-in Int32 list",
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constID: 0xacf3d9917d0bb0f0, // scopes.intList
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remoteName: "capnp.Int32List",
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remoteNew: "capnp.NewInt32List",
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imports: []importSpec{
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{name: "capnp", path: "zombiezen.com/go/capnproto2"},
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},
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},
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}
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req := mustReadGeneratorRequest(t, "scopes.capnp.out")
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nodes, err := buildNodeMap(req)
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if err != nil {
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t.Fatal("buildNodeMap:", err)
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}
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collect := func(test scopeTest) (g *generator, typ schema.Type, from *node, ok bool) {
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g = newGenerator(0xd68755941d99d05e, nodes, genoptions{})
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v := nodes[test.constID]
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if v == nil {
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t.Errorf("Can't find const @%#x for %s test", test.constID, test.name)
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return nil, schema.Type{}, nil, false
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}
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if v.Which() != schema.Node_Which_const {
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t.Errorf("Type of node @%#x in %s test is a %v node; want const. Check the test.", test.constID, test.name, v.Which())
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return nil, schema.Type{}, nil, false
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}
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constType, _ := v.Const().Type()
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for _, i := range test.initImports {
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g.imports.add(i)
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}
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return g, constType, v, true
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}
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for _, test := range tests {
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g, typ, from, ok := collect(test)
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if !ok {
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continue
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}
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rn, err := g.RemoteTypeName(typ, from)
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if err != nil {
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t.Errorf("%s: g.RemoteTypeName(nodes[%#x].Const().Type(), nodes[%#x]) error: %v", test.name, test.constID, test.constID, err)
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continue
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}
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if rn != test.remoteName {
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t.Errorf("%s: g.RemoteTypeName(nodes[%#x].Const().Type(), nodes[%#x]) = %q; want %q", test.name, test.constID, test.constID, rn, test.remoteName)
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continue
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}
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if !hasExactImports(test.imports, g.imports) {
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t.Errorf("%s: g.RemoteTypeName(nodes[%#x].Const().Type(), nodes[%#x]); g.imports = %s; want %s", test.name, test.constID, test.constID, formatImportSpecs(g.imports.usedImports()), formatImportSpecs(test.imports))
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continue
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}
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}
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for _, test := range tests {
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g, typ, from, ok := collect(test)
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if !ok {
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continue
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}
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rn, err := g.RemoteTypeNew(typ, from)
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if err != nil {
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t.Errorf("%s: g.RemoteTypeNew(nodes[%#x].Const().Type(), nodes[%#x]) error: %v", test.name, test.constID, test.constID, err)
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continue
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}
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if rn != test.remoteNew {
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t.Errorf("%s: g.RemoteTypeNew(nodes[%#x].Const().Type(), nodes[%#x]) = %q; want %q", test.name, test.constID, test.constID, rn, test.remoteNew)
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continue
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}
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if !hasExactImports(test.imports, g.imports) {
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t.Errorf("%s: g.RemoteTypeNew(nodes[%#x].Const().Type(), nodes[%#x]); g.imports = %s; want %s", test.name, test.constID, test.constID, formatImportSpecs(g.imports.usedImports()), formatImportSpecs(test.imports))
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continue
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}
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}
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}
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func hasExactImports(specs []importSpec, imp imports) bool {
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used := imp.usedImports()
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if len(used) != len(specs) {
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return false
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}
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outer:
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for i := range specs {
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for j := range used {
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if specs[i] == used[j] {
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continue outer
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}
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}
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return false
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}
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return true
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}
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func formatImportSpecs(specs []importSpec) string {
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var buf bytes.Buffer
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for i, s := range specs {
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if i > 0 {
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buf.WriteString("; ")
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}
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buf.WriteString(s.String())
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}
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return buf.String()
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}
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func TestDefineConstNodes(t *testing.T) {
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req := mustReadGeneratorRequest(t, "const.capnp.out")
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nodes, err := buildNodeMap(req)
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if err != nil {
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t.Fatal("buildNodeMap:", err)
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}
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g := newGenerator(0xc260cb50ae622e10, nodes, genoptions{})
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getCalls := traceGenerator(g)
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err = g.defineConstNodes(nodes[0xc260cb50ae622e10].nodes)
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if err != nil {
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t.Fatal("defineConstNodes:", err)
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}
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calls := getCalls()
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if len(calls) != 1 {
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t.Fatalf("defineConstNodes called %d templates; want 1", len(calls))
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}
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p, ok := calls[0].params.(constantsParams)
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if calls[0].name != "constants" || !ok {
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t.Fatalf("defineConstNodes rendered %v; want render of constants template", calls[0])
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}
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if !containsExactlyIDs(p.Consts, 0xda96e2255811b258) {
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t.Errorf("defineConstNodes rendered Consts %s", nodeListString(p.Consts))
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}
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if !containsExactlyIDs(p.Vars, 0xe0a385c7be1fea4d) {
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t.Errorf("defineConstNodes rendered Vars %s", nodeListString(p.Vars))
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}
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}
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func TestDefineFile(t *testing.T) {
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// Sanity check to make sure codegen produces parseable Go.
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const iterations = 3
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defaultOptions := genoptions{
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promises: true,
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schemas: true,
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structStrings: true,
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}
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tests := []struct {
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fileID uint64
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fname string
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opts genoptions
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}{
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{0x832bcc6686a26d56, "aircraft.capnp.out", defaultOptions},
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{0x832bcc6686a26d56, "aircraft.capnp.out", genoptions{
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promises: false,
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schemas: false,
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structStrings: false,
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}},
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{0x832bcc6686a26d56, "aircraft.capnp.out", genoptions{
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promises: true,
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schemas: false,
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structStrings: false,
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}},
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{0x832bcc6686a26d56, "aircraft.capnp.out", genoptions{
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promises: false,
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schemas: true,
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structStrings: false,
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}},
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{0x832bcc6686a26d56, "aircraft.capnp.out", genoptions{
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promises: true,
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schemas: true,
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structStrings: false,
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}},
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{0x832bcc6686a26d56, "aircraft.capnp.out", genoptions{
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promises: false,
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schemas: true,
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structStrings: true,
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}},
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{0x83c2b5818e83ab19, "group.capnp.out", defaultOptions},
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{0xb312981b2552a250, "rpc.capnp.out", defaultOptions},
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{0xd68755941d99d05e, "scopes.capnp.out", defaultOptions},
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{0xecd50d792c3d9992, "util.capnp.out", defaultOptions},
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}
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for _, test := range tests {
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data, err := readTestFile(test.fname)
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if err != nil {
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t.Errorf("reading %s: %v", test.fname, err)
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continue
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}
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msg, err := capnp.Unmarshal(data)
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if err != nil {
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t.Errorf("Unmarshaling %s: %v", test.fname, err)
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continue
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}
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req, err := schema.ReadRootCodeGeneratorRequest(msg)
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if err != nil {
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t.Errorf("Reading code generator request %s: %v", test.fname, err)
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continue
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}
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nodes, err := buildNodeMap(req)
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if err != nil {
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t.Errorf("buildNodeMap %s: %v", test.fname, err)
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continue
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}
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g := newGenerator(test.fileID, nodes, test.opts)
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if err := g.defineFile(); err != nil {
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t.Errorf("defineFile %s %+v: %v", test.fname, test.opts, err)
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continue
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}
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src := g.generate()
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if _, err := parser.ParseFile(token.NewFileSet(), test.fname+".go", src, 0); err != nil {
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// TODO(light): log src
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t.Errorf("generate %s %+v failed to parse: %v", test.fname, test.opts, err)
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}
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// Generation should be deterministic between runs.
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for i := 0; i < iterations-1; i++ {
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g := newGenerator(test.fileID, nodes, test.opts)
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if err := g.defineFile(); err != nil {
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t.Errorf("defineFile %s %+v [iteration %d]: %v", test.fname, test.opts, i+2, err)
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continue
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}
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src2 := g.generate()
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if !bytes.Equal(src, src2) {
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t.Errorf("defineFile %s %+v [iteration %d] did not match iteration 1: non-deterministic", test.fname, test.opts, i+2)
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}
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}
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}
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}
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func TestSchemaVarLiteral(t *testing.T) {
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tests := []string{
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"",
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"foo",
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"deadbeefdeadbeef",
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"deadbeefdeadbeefdeadbeef",
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"\x00\x00",
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"\xff\xff",
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"\n",
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" ~\"\\",
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"\xff\xff\x27\xa1\xe3\xf1",
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}
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for _, test := range tests {
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got := schemaVarParams{schema: []byte(test)}.SchemaLiteral()
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u, err := strconv.Unquote(strings.Replace(got, "\" +\n\t\"", "", -1))
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if err != nil {
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t.Errorf("schema literal of %q does not parse: %v\n\tproduced: %s", test, err, got)
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} else if u != test {
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t.Errorf("schema literal of %q != %s", test, got)
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}
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}
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}
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type traceRenderer struct {
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renderer
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calls []renderCall
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}
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func traceGenerator(g *generator) (getCalls func() []renderCall) {
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tr := &traceRenderer{renderer: g.r}
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g.r = tr
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return func() []renderCall { return tr.calls }
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}
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func (tr *traceRenderer) Render(name string, params interface{}) error {
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tr.calls = append(tr.calls, renderCall{name, params})
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return tr.renderer.Render(name, params)
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}
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type renderCall struct {
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name string
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params interface{}
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}
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func (rc renderCall) String() string {
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return fmt.Sprintf("{%q %#v}", rc.name, rc.params)
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}
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func containsExactlyIDs(nodes []*node, ids ...uint64) bool {
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if len(nodes) != len(ids) {
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return false
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}
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sorted := make([]uint64, len(ids))
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copy(sorted, ids)
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sort.Sort(uint64Slice(sorted))
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actual := make([]uint64, len(nodes))
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for i := range nodes {
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actual[i] = nodes[i].Id()
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}
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sort.Sort(uint64Slice(actual))
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for i := range sorted {
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if actual[i] != sorted[i] {
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return false
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}
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}
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return true
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}
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func nodeListString(n []*node) string {
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b := new(bytes.Buffer)
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e := text.NewEncoder(b)
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b.WriteByte('[')
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for i, nn := range n {
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if i > 0 {
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b.WriteByte(' ')
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}
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e.Encode(0xe682ab4cf923a417, nn.Struct)
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}
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b.WriteByte(']')
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return b.String()
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}
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