tsserver - ts_test.go

     1  package tsserver
     2  
     3  import (
     4  	"bytes"
     5  	"io"
     6  	"io/fs"
     7  	"testing"
     8  	"time"
     9  )
    10  
    11  type fileInfo struct{}
    12  
    13  func (fileInfo) Name() string { return "" }
    14  
    15  func (fileInfo) Size() int64 { return 0 }
    16  
    17  func (fileInfo) ModTime() time.Time { return time.Now() }
    18  
    19  func (fileInfo) Mode() fs.FileMode { return 0o755 }
    20  
    21  func (fileInfo) IsDir() bool { return false }
    22  
    23  func (fileInfo) Sys() any { return nil }
    24  
    25  type pseudoFS string
    26  
    27  func (p pseudoFS) Open(name string) (fs.File, error) {
    28  	return &file{
    29  		Reader:   bytes.NewReader([]byte(p)),
    30  		name:     name,
    31  		FileInfo: fileInfo{},
    32  	}, nil
    33  }
    34  
    35  func TestWrap(t *testing.T) {
    36  	for n, test := range [...]struct {
    37  		Input, Output string
    38  	}{
    39  		{
    40  			"",
    41  			"",
    42  		},
    43  		{
    44  			"const a: number = 1;\n\nconsole.log(a);",
    45  			"const a = 1;\n\nconsole.log(a);",
    46  		},
    47  	} {
    48  		f, err := WrapFS(pseudoFS(test.Input)).Open("a.js")
    49  		if err != nil {
    50  			t.Errorf("test %d: unexpected error while getting file: %s", n+1, err)
    51  		} else if b, _ := io.ReadAll(f); string(b) != test.Output {
    52  			t.Errorf("test %d: expecting output %s, got %s", n+1, test.Output, b)
    53  		}
    54  	}
    55  }
    56