Function testSourceMapping

internal/report/source_test.go:66–121

testSourceMapping checks that source info is found even when no applicable Mapping/objectFile exists. The locations used in the test are either zero (if zeroAddress is true), or non-zero (otherwise).

(t *testing.T, zeroAddress bool)

// Mapping/objectFile exists. The locations used in the test are either zero
// (if zeroAddress is true), or non-zero (otherwise).
func testSourceMapping(t *testing.T, zeroAddress bool) {
	nextAddr := uint64(0)

	makeLoc := func(name, fname string, line int64) *profile.Location {
		if !zeroAddress {
			nextAddr++
		}
		return &profile.Location{
			Address: nextAddr,
			Line: []profile.Line{
				{
					Function: &profile.Function{Name: name, Filename: fname},
					Line:     line,
				},
			},
		}
	}

	// Create profile that will need synthetic addresses since it has no mappings.
	foo100 := makeLoc("foo", "foo.go", 100)
	bar50 := makeLoc("bar", "bar.go", 50)
	prof := &profile.Profile{
		Sample: []*profile.Sample{
			{
				Value:    []int64{9},
				Location: []*profile.Location{foo100, bar50},
			},
			{
				Value:    []int64{17},
				Location: []*profile.Location{bar50},
			},
		},
	}
	rpt := &Report{
		prof: prof,
		options: &Options{
			Symbol:      regexp.MustCompile("foo|bar"),
			SampleValue: func(s []int64) int64 { return s[0] },
		},
		formatValue: func(v int64) string { return fmt.Sprint(v) },
	}

	result, err := MakeWebList(rpt, nil, -1)
	if err != nil {
		t.Fatalf("MakeWebList returned unexpected error: %v", err)
	}
	got := fmt.Sprint(result)

	expect := regexp.MustCompile(
		`(?s)` + // Allow "." to match newline
			`bar\.go.* 50\b.* 17 +26 .*` +
			`foo\.go.* 100\b.* 9 +9 `)
	if !expect.MatchString(got) {
		t.Errorf("expected regular expression %v does not match  output:\n%s\n", expect, got)
	}
}

func TestOpenSourceFile(t *testing.T) {