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// Copyright 2018 The 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 load
import (
"fmt"
"os"
"path/filepath"
"reflect"
"testing"
"cuelang.org/go/cue/build"
)
func testdata(elems ...string) string {
return filepath.Join(append([]string{"testdata"}, elems...)...)
}
var pkgRootDir, _ = os.Getwd()
func getInst(pkg, cwd string) (*build.Instance, error) {
insts := Instances([]string{pkg}, &Config{
// Set ModuleRoot as well; otherwise we walk the parent directories
// all the way to the root of the git repository, causing Go's test caching
// to never kick in, as the .git directory almost always changes.
// Moreover, it's extra work that isn't useful to the tests.
//
// Note that we can't set ModuleRoot to cwd because if ModuleRoot is
// set, the logic will only look for a module file in that exact directory.
// So we set it to the module root actually used by all the callers of getInst: ./testdata/testmod.
ModuleRoot: filepath.Join(pkgRootDir, testdata("testmod")),
Dir: cwd,
})
if len(insts) != 1 {
return nil, fmt.Errorf("expected one instance, got %d", len(insts))
}
inst := insts[0]
return inst, inst.Err
}
func TestEmptyImport(t *testing.T) {
path := testdata("testmod", "hello")
p, err := getInst("", path)
if err == nil {
t.Fatal(`Import("") returned nil error.`)
}
if p == nil {
t.Fatal(`Import("") returned nil package.`)
}
if p.DisplayPath != "" {
t.Fatalf("DisplayPath=%q, want %q.", p.DisplayPath, "")
}
}
func TestEmptyFolderImport(t *testing.T) {
path := testdata("testmod", "empty")
_, err := getInst(".", path)
if _, ok := err.(*NoFilesError); !ok {
t.Fatalf(`Import(%q) did not return NoCUEError, but instead %#v (%v)`, path, err, err)
}
}
func TestMultiplePackageImport(t *testing.T) {
path := testdata("testmod", "multi")
_, err := getInst(".", path)
mpe, ok := err.(*MultiplePackageError)
if !ok {
t.Fatalf(`Import(%q) did not return MultiplePackageError, but instead %#v (%v)`, path, err, err)
}
mpe.Dir = ""
want := &MultiplePackageError{
Packages: []string{"main", "test_package"},
Files: []string{"file.cue", "file_appengine.cue"},
}
if !reflect.DeepEqual(mpe, want) {
t.Errorf("got %#v; want %#v", mpe, want)
}
}
func TestLocalDirectory(t *testing.T) {
p, err := getInst(".", testdata("testmod", "hello"))
if err != nil {
t.Fatal(err)
}
if p.DisplayPath != "." {
t.Fatalf("DisplayPath=%q, want %q", p.DisplayPath, ".")
}
}
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