misc_test.go

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

     1  package gojs_test
     2  
     3  import (
     4  	"bytes"
     5  	"context"
     6  	"fmt"
     7  	"strings"
     8  	"testing"
     9  
    10  	"github.com/tetratelabs/wazero"
    11  	"github.com/tetratelabs/wazero/experimental"
    12  	"github.com/tetratelabs/wazero/experimental/logging"
    13  	"github.com/tetratelabs/wazero/internal/gojs/config"
    14  	"github.com/tetratelabs/wazero/internal/testing/require"
    15  )
    16  
    17  func Test_exit(t *testing.T) {
    18  	t.Parallel()
    19  
    20  	var log bytes.Buffer
    21  	loggingCtx := context.WithValue(testCtx, experimental.FunctionListenerFactoryKey{},
    22  		logging.NewHostLoggingListenerFactory(&log, logging.LogScopeProc))
    23  
    24  	stdout, stderr, err := compileAndRun(loggingCtx, "exit", defaultConfig)
    25  
    26  	require.Zero(t, stderr)
    27  	require.EqualError(t, err, `module closed with exit_code(255)`)
    28  	require.Zero(t, stdout)
    29  	require.Equal(t, `==> go.runtime.wasmExit(code=255)
    30  <==
    31  `, logString(log)) // Note: gojs doesn't panic on exit, so you see "<=="
    32  }
    33  
    34  func Test_goroutine(t *testing.T) {
    35  	t.Parallel()
    36  
    37  	stdout, stderr, err := compileAndRun(testCtx, "goroutine", defaultConfig)
    38  
    39  	require.Zero(t, stderr)
    40  	require.NoError(t, err)
    41  	require.Equal(t, `producer
    42  consumer
    43  `, stdout)
    44  }
    45  
    46  func Test_mem(t *testing.T) {
    47  	t.Parallel()
    48  
    49  	var log bytes.Buffer
    50  	loggingCtx := context.WithValue(testCtx, experimental.FunctionListenerFactoryKey{},
    51  		logging.NewHostLoggingListenerFactory(&log, logging.LogScopeMemory))
    52  
    53  	stdout, stderr, err := compileAndRun(loggingCtx, "mem", defaultConfig)
    54  
    55  	require.Zero(t, stderr)
    56  	require.NoError(t, err)
    57  	require.Zero(t, stdout)
    58  
    59  	// The memory view is reset at least once.
    60  	require.Contains(t, logString(log), `==> go.runtime.resetMemoryDataView()
    61  <==
    62  `)
    63  }
    64  
    65  func Test_stdio(t *testing.T) {
    66  	t.Parallel()
    67  
    68  	input := "stdin\n"
    69  	stdout, stderr, err := compileAndRun(testCtx, "stdio", func(moduleConfig wazero.ModuleConfig) (wazero.ModuleConfig, *config.Config) {
    70  		return defaultConfig(moduleConfig.WithStdin(strings.NewReader(input)))
    71  	})
    72  
    73  	require.Equal(t, "stderr 6\n", stderr)
    74  	require.NoError(t, err)
    75  	require.Equal(t, "stdout 6\n", stdout)
    76  }
    77  
    78  func Test_stdio_large(t *testing.T) {
    79  	t.Parallel()
    80  
    81  	// Large stdio will trigger GC which will trigger events.
    82  	var log bytes.Buffer
    83  	loggingCtx := context.WithValue(testCtx, experimental.FunctionListenerFactoryKey{},
    84  		logging.NewHostLoggingListenerFactory(&log, logging.LogScopePoll))
    85  
    86  	size := 2 * 1024 * 1024 // 2MB
    87  	input := make([]byte, size)
    88  	stdout, stderr, err := compileAndRun(loggingCtx, "stdio", func(moduleConfig wazero.ModuleConfig) (wazero.ModuleConfig, *config.Config) {
    89  		return defaultConfig(moduleConfig.WithStdin(bytes.NewReader(input)))
    90  	})
    91  
    92  	require.NoError(t, err)
    93  	require.Equal(t, fmt.Sprintf("stderr %d\n", size), stderr)
    94  	require.Equal(t, fmt.Sprintf("stdout %d\n", size), stdout)
    95  
    96  	// There's no guarantee of a timeout event (in Go 1.21 there isn't), so we
    97  	// don't verify this. gojs is in maintenance mode until it is removed after
    98  	// Go 1.22 is out.
    99  }
   100  
   101  func Test_gc(t *testing.T) {
   102  	t.Parallel()
   103  
   104  	stdout, stderr, err := compileAndRun(testCtx, "gc", defaultConfig)
   105  
   106  	require.NoError(t, err)
   107  	require.Equal(t, "", stderr)
   108  	require.Equal(t, "before gc\nafter gc\n", stdout)
   109  }
   110
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