1 // Copyright 2015 The Go Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style 3 // license that can be found in the LICENSE file. 4 5 package main_test 6 7 import ( 8 main "cmd/go" 9 "go/build" 10 "runtime" 11 "testing" 12 ) 13 14 func TestNoteReading(t *testing.T) { 15 testNoteReading(t) 16 } 17 18 func TestNoteReading2K(t *testing.T) { 19 if runtime.GOOS == "windows" { 20 t.Skipf("2kB is not enough on %s", runtime.GOOS) 21 } 22 // Set BuildIDReadSize to 2kB to exercise Mach-O parsing more strictly. 23 defer func(old int) { 24 main.BuildIDReadSize = old 25 }(main.BuildIDReadSize) 26 main.BuildIDReadSize = 2 * 1024 27 28 testNoteReading(t) 29 } 30 31 func testNoteReading(t *testing.T) { 32 tg := testgo(t) 33 defer tg.cleanup() 34 tg.tempFile("hello.go", `package main; func main() { print("hello, world\n") }`) 35 const buildID = "TestNoteReading-Build-ID" 36 tg.run("build", "-ldflags", "-buildid="+buildID, "-o", tg.path("hello.exe"), tg.path("hello.go")) 37 id, err := main.ReadBuildIDFromBinary(tg.path("hello.exe")) 38 if err != nil { 39 t.Fatalf("reading build ID from hello binary: %v", err) 40 } 41 if id != buildID { 42 t.Fatalf("buildID in hello binary = %q, want %q", id, buildID) 43 } 44 45 switch { 46 case !build.Default.CgoEnabled: 47 t.Skipf("skipping - no cgo, so assuming external linking not available") 48 case runtime.GOOS == "linux" && (runtime.GOARCH == "ppc64le" || runtime.GOARCH == "ppc64"): 49 t.Skipf("skipping - external linking not supported, golang.org/issue/11184") 50 case runtime.GOOS == "openbsd" && runtime.GOARCH == "arm": 51 t.Skipf("skipping - external linking not supported, golang.org/issue/10619") 52 case runtime.GOOS == "plan9": 53 t.Skipf("skipping - external linking not supported") 54 } 55 56 tg.run("build", "-ldflags", "-buildid="+buildID+" -linkmode=external", "-o", tg.path("hello.exe"), tg.path("hello.go")) 57 id, err = main.ReadBuildIDFromBinary(tg.path("hello.exe")) 58 if err != nil { 59 t.Fatalf("reading build ID from hello binary (linkmode=external): %v", err) 60 } 61 if id != buildID { 62 t.Fatalf("buildID in hello binary = %q, want %q (linkmode=external)", id, buildID) 63 } 64 } 65
