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// Copyright 2021 CUE Authors
//
// 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 cue_test
import (
"fmt"
"testing"
"cuelang.org/go/cue"
"cuelang.org/go/cue/build"
"cuelang.org/go/cue/cuecontext"
"cuelang.org/go/internal/astinternal"
"cuelang.org/go/internal/cuetest"
"cuelang.org/go/internal/cuetxtar"
"cuelang.org/go/internal/tdtest"
"github.com/go-quicktest/qt"
"golang.org/x/tools/txtar"
)
func TestNewList(t *testing.T) {
ctx := cuecontext.New()
intList := ctx.CompileString("[...int]")
l123 := ctx.NewList(
ctx.Encode(1),
ctx.Encode(2),
ctx.Encode(3),
)
testCases := []struct {
desc string
v cue.Value
out string
}{{
v: ctx.NewList(),
out: `[]`,
}, {
v: l123,
out: `[1, 2, 3]`,
}, {
v: l123.Unify(intList),
out: `[1, 2, 3]`,
}, {
v: l123.Unify(intList).Unify(l123),
out: `[1, 2, 3]`,
}, {
v: intList.Unify(ctx.NewList(ctx.Encode("string"))),
out: `_|_ // 0: conflicting values "string" and int (mismatched types string and int)`,
}, {
v: ctx.NewList().Unify(l123),
out: `_|_ // incompatible list lengths (0 and 3)`,
}, {
v: ctx.NewList(
intList,
intList,
).Unify(ctx.NewList(
ctx.NewList(
ctx.Encode(1),
ctx.Encode(3),
),
ctx.NewList(
ctx.Encode(5),
ctx.Encode(7),
),
)),
out: `[[1, 3], [5, 7]]`,
}}
for _, tc := range testCases {
t.Run(tc.desc, func(t *testing.T) {
got := fmt.Sprint(tc.v)
if got != tc.out {
t.Errorf(" got: %v\nwant: %v", got, tc.out)
}
})
}
}
func TestBuildInstancesSuccess(t *testing.T) {
in := `
-- foo.cue --
package foo
foo: [{a: "b", c: "d"}, {a: "e", g: "f"}]
bar: [
for f in foo
if (f & {c: "b"}) != _|_
{f}
]
`
a := txtar.Parse([]byte(in))
instance := cuetxtar.Load(a, t.TempDir())[0]
if instance.Err != nil {
t.Fatal(instance.Err)
}
_, err := cuecontext.New().BuildInstances([]*build.Instance{instance})
if err != nil {
t.Fatalf("BuildInstances() = %v", err)
}
}
func TestBuildInstancesError(t *testing.T) {
in := `
-- foo.cue --
package foo
foo: [{a: "b", c: "d"}, {a: "e", g: "f"}]
bar: [
for f in foo
if f & {c: "b") != _|_ // NOTE: ')' instead of '}'
{f}
]
`
a := txtar.Parse([]byte(in))
instance := cuetxtar.Load(a, t.TempDir())[0]
// Normally, this should be checked, however, this is explicitly
// testing the path where this was NOT checked.
// if instance.Err != nil {
// t.Fatal(instance.Err)
// }
vs, err := cuecontext.New().BuildInstances([]*build.Instance{instance})
if err == nil {
t.Fatalf("BuildInstances() = %#v, wanted error", vs)
}
}
func TestEncodeType(t *testing.T) {
type testCase struct {
name string
x interface{}
wantErr string
out string
}
testCases := []testCase{{
name: "Struct",
x: struct {
A int `json:"a"`
B string `json:"b,omitempty"`
C []bool
}{},
out: `{a: int64, b?: string, C?: *null|[...bool]}`,
}, {
name: "CUEValue#1",
x: struct {
A cue.Value `json:"a"`
}{},
out: `{a: _}`,
}, {
name: "CUEValue#2",
x: cue.Value{},
out: `_`,
}, {
// TODO this looks like a shortcoming of EncodeType.
name: "map",
x: map[string]int{},
out: `*null|{}`,
}, {
name: "slice",
x: []int{},
out: `*null|[...int64]`,
}, {
name: "chan",
x: chan int(nil),
wantErr: `unsupported Go type \(chan int\)`,
}}
tdtest.Run(t, testCases, func(t *cuetest.T, tc *testCase) {
v := cuecontext.New().EncodeType(tc.x)
if tc.wantErr != "" {
qt.Assert(t, qt.ErrorMatches(v.Err(), tc.wantErr))
return
}
qt.Assert(t, qt.IsNil(v.Err()))
got := fmt.Sprint(astinternal.DebugStr(v.Eval().Syntax()))
t.Equal(got, tc.out)
})
}
func TestContextCheck(t *testing.T) {
qt.Assert(t, qt.PanicMatches(func() {
var c cue.Context
c.CompileString("1")
}, `.*use cuecontext\.New.*`))
}
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