data.go

Documentation: github.com/tetratelabs/wazero/internal/testing/dwarftestdata

     1  package dwarftestdata
     2  
     3  import (
     4  	"bytes"
     5  	"embed"
     6  	"fmt"
     7  	"os/exec"
     8  )
     9  
    10  // DWARF tests are build-sensitive in the sense that
    11  // whenever rebuilding the program, it is highly likely that
    12  // line number, source code file, etc, can change. Therefore,
    13  // even though these binaries are huge, we check them in to the repositories.
    14  
    15  //go:embed testdata/tinygo/main.wasm
    16  var TinyGoWasm []byte
    17  
    18  //go:embed testdata/zig/main.wasm
    19  var ZigWasm []byte
    20  
    21  //go:embed testdata/zig-cc/main.wasm
    22  var ZigCCWasm []byte
    23  
    24  // RustWasm comes with huge DWARF sections, so we do not check it in directly,
    25  // but instead xz-compressed one is.
    26  var RustWasm []byte
    27  
    28  //go:embed testdata/rust
    29  var testRustDir embed.FS
    30  
    31  func init() {
    32  	const wasmPath = "testdata/rust/main.wasm"
    33  	var err error
    34  	RustWasm, err = testRustDir.ReadFile(wasmPath)
    35  	if err != nil {
    36  		const xzPath = "testdata/rust/main.wasm.xz"
    37  		xzWasm, err := testRustDir.ReadFile(xzPath)
    38  		if err != nil {
    39  			panic(err)
    40  		}
    41  		cmd := exec.Command("xz", "-d")
    42  		cmd.Stdin = bytes.NewReader(xzWasm)
    43  		out := bytes.NewBuffer(nil)
    44  		cmd.Stdout = out
    45  		if err = cmd.Run(); err != nil {
    46  			fmt.Printf("Skipping DWARF tests for rusts as xz command failed: %v", err)
    47  			return
    48  		}
    49  		RustWasm = out.Bytes()
    50  	}
    51  }
    52
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