73 lines
1.5 KiB
Go
73 lines
1.5 KiB
Go
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package build
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import (
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"bytes"
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"errors"
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"fmt"
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"log"
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"testing"
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"github.com/mmcloughlin/avo/src"
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)
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func TestLogErrorNil(t *testing.T) {
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var buf bytes.Buffer
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l := log.New(&buf, "prefix: ", 0)
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LogError(l, nil, 0)
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if buf.String() != "" {
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t.Fatalf("should print nothing for nil error")
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}
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}
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func TestLogErrorNonErrorList(t *testing.T) {
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var buf bytes.Buffer
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l := log.New(&buf, "prefix: ", 0)
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err := errors.New("not an ErrorList")
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LogError(l, err, 0)
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got := buf.String()
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expect := "prefix: " + err.Error() + "\n"
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if got != expect {
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t.Fatalf("got\t%q\nexpect\t%q\n", got, expect)
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}
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}
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func TestLogErrorList(t *testing.T) {
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var buf bytes.Buffer
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l := log.New(&buf, "prefix: ", 0)
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e := ErrorList{}
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filename := "asm.go"
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err := errors.New("some kind of error")
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n := 7
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for i := 1; i <= n; i++ {
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p := src.Position{Filename: filename, Line: i}
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e.AddAt(p, err)
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}
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expect := ""
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// Unlimited print.
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LogError(l, e, 0)
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for i := 1; i <= n; i++ {
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expect += fmt.Sprintf("prefix: %s:%d: some kind of error\n", filename, i)
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}
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// Max equal to number of errors.
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LogError(l, e, n)
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for i := 1; i <= n; i++ {
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expect += fmt.Sprintf("prefix: %s:%d: some kind of error\n", filename, i)
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}
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// Max less than number of errors.
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m := n / 2
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LogError(l, e, m)
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for i := 1; i <= m; i++ {
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expect += fmt.Sprintf("prefix: %s:%d: some kind of error\n", filename, i)
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}
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expect += fmt.Sprintf("prefix: too many errors\n")
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got := buf.String()
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if got != expect {
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t.Fatalf("got\n%s\nexpect\n%s\n", got, expect)
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}
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}
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