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Source file src/cmd/internal/obj/line_test.go

Documentation: cmd/internal/obj

  // Copyright 2015 The Go Authors. All rights reserved.
  // Use of this source code is governed by a BSD-style
  // license that can be found in the LICENSE file.
  
  package obj
  
  import (
  	"cmd/internal/src"
  	"fmt"
  	"testing"
  )
  
  func TestLinkgetlineFromPos(t *testing.T) {
  	ctxt := new(Link)
  	ctxt.hash = make(map[string]*LSym)
  	ctxt.statichash = make(map[string]*LSym)
  
  	afile := src.NewFileBase("a.go", "a.go")
  	bfile := src.NewFileBase("b.go", "/foo/bar/b.go")
  	lfile := src.NewLinePragmaBase(src.MakePos(afile, 7, 0), "linedir", 100)
  
  	var tests = []struct {
  		pos  src.Pos
  		want string
  	}{
  		{src.NoPos, "??:0"},
  		{src.MakePos(afile, 1, 0), "a.go:1"},
  		{src.MakePos(afile, 2, 0), "a.go:2"},
  		{src.MakePos(bfile, 10, 4), "/foo/bar/b.go:10"},
  		{src.MakePos(lfile, 10, 0), "linedir:102"}, // 102 == 100 + (10 - (7+1))
  	}
  
  	for _, test := range tests {
  		f, l := linkgetlineFromPos(ctxt, ctxt.PosTable.XPos(test.pos))
  		got := fmt.Sprintf("%s:%d", f, l)
  		if got != src.FileSymPrefix+test.want {
  			t.Errorf("linkgetline(%v) = %q, want %q", test.pos, got, test.want)
  		}
  	}
  }
  

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