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// Copyright 2019 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 format
import (
"strings"
"testing"
"cuelang.org/go/cue/ast"
"cuelang.org/go/cue/token"
"cuelang.org/go/internal"
)
// TestInvalidAST verifies behavior for various invalid AST inputs. In some
// cases it is okay to be permissive, as long as the output is correct.
func TestInvalidAST(t *testing.T) {
ident := func(s string) *ast.Ident {
return &ast.Ident{NamePos: token.NoSpace.Pos(), Name: s}
}
testCases := []struct {
desc string
node ast.Node
out string
}{{
desc: "label sequence for definition",
node: &ast.Field{Label: ident("foo"), Value: ast.NewStruct(
ident("bar"), token.ISA, &ast.StructLit{},
)},
// Force a new struct.
out: `foo: {
bar :: {}
}`,
}, {
desc: "label with invalid identifier",
node: &ast.Field{Label: &ast.Ident{}, Value: ast.NewString("foo")},
// Force a new struct.
out: `"": "foo"`,
}, {
desc: "ImportDecl without parens, but imports with comments",
node: func() ast.Node {
n := ast.NewImport(nil, "time")
ast.AddComment(n, internal.NewComment(true, "hello"))
return &ast.ImportDecl{Specs: []*ast.ImportSpec{n}}
}(),
out: `import (
// hello
"time"
)`,
}}
for _, tc := range testCases {
t.Run(tc.desc, func(t *testing.T) {
b, err := Node(tc.node)
if err != nil {
t.Fatal(err)
}
got := string(b)
want := tc.out
if got != want {
t.Errorf("\ngot %v;\nwant %v", got, want)
}
})
}
}
func TestErrors(t *testing.T) {
testCases := []struct {
desc string
node ast.Node
err string
}{{
desc: "empty identifier",
node: ast.NewIdent(""),
err: "invalid identifier",
}}
for _, tc := range testCases {
t.Run(tc.desc, func(t *testing.T) {
b, err := Node(tc.node)
if err == nil {
t.Fatalf("expected error, found %q", b)
}
got := err.Error()
if !strings.Contains(got, tc.err) {
t.Errorf("\ngot %v;\nwant %v", got, tc.err)
}
})
}
}