fs_test.go

Documentation: github.com/tetratelabs/wazero/internal/gojs

     1  package gojs_test
     2  
     3  import (
     4  	"os"
     5  	"path"
     6  	"testing"
     7  
     8  	"github.com/tetratelabs/wazero"
     9  	"github.com/tetratelabs/wazero/internal/fstest"
    10  	"github.com/tetratelabs/wazero/internal/gojs/config"
    11  	"github.com/tetratelabs/wazero/internal/platform"
    12  	"github.com/tetratelabs/wazero/internal/testing/require"
    13  )
    14  
    15  func Test_fs(t *testing.T) {
    16  	t.Parallel()
    17  
    18  	stdout, stderr, err := compileAndRun(testCtx, "fs", func(moduleConfig wazero.ModuleConfig) (wazero.ModuleConfig, *config.Config) {
    19  		return defaultConfig(moduleConfig.WithFS(testFS))
    20  	})
    21  
    22  	require.Zero(t, stderr)
    23  	require.NoError(t, err)
    24  	require.Equal(t, `sub mode drwxr-xr-x
    25  /animals.txt mode -rw-r--r--
    26  animals.txt mode -rw-r--r--
    27  contents: bear
    28  cat
    29  shark
    30  dinosaur
    31  human
    32  
    33  empty:
    34  `, stdout)
    35  }
    36  
    37  // Test_testsfs runs fstest.TestFS inside wasm.
    38  func Test_testfs(t *testing.T) {
    39  	t.Parallel()
    40  
    41  	// Setup /testfs which is used in the wasm invocation of testfs.TestFS.
    42  	tmpDir := t.TempDir()
    43  	testfsDir := path.Join(tmpDir, "testfs")
    44  	require.NoError(t, os.Mkdir(testfsDir, 0o700))
    45  	require.NoError(t, fstest.WriteTestFiles(testfsDir))
    46  
    47  	fsConfig := wazero.NewFSConfig().WithDirMount(tmpDir, "/")
    48  	stdout, stderr, err := compileAndRun(testCtx, "testfs", func(moduleConfig wazero.ModuleConfig) (wazero.ModuleConfig, *config.Config) {
    49  		return defaultConfig(moduleConfig.WithFSConfig(fsConfig))
    50  	})
    51  
    52  	require.Zero(t, stderr)
    53  	require.NoError(t, err)
    54  	require.Zero(t, stdout)
    55  }
    56  
    57  func Test_writefs(t *testing.T) {
    58  	t.Parallel()
    59  	tmpDir := t.TempDir()
    60  	fsConfig := wazero.NewFSConfig().WithDirMount(tmpDir, "/")
    61  
    62  	// test expects to write under /tmp
    63  	require.NoError(t, os.Mkdir(path.Join(tmpDir, "tmp"), 0o700))
    64  
    65  	stdout, stderr, err := compileAndRun(testCtx, "writefs", func(moduleConfig wazero.ModuleConfig) (wazero.ModuleConfig, *config.Config) {
    66  		return defaultConfig(moduleConfig.WithFSConfig(fsConfig))
    67  	})
    68  
    69  	require.Zero(t, stderr)
    70  	require.NoError(t, err)
    71  
    72  	if platform.CompilerSupported() {
    73  		//  Note: as of Go 1.19, only the Sec field is set on update in fs_js.go.
    74  		require.Equal(t, `/tmp/dir mode drwx------
    75  /tmp/dir/file mode -rw-------
    76  dir times: 123000000000 567000000000
    77  `, stdout)
    78  	} else { // only mtimes will return on a plarform we don't support in sysfs
    79  		require.Equal(t, `/tmp/dir mode drwx------
    80  /tmp/dir/file mode -rw-------
    81  dir times: 567000000000 567000000000
    82  `, stdout)
    83  	}
    84  }
    85
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