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34 lines
810 B
Go
34 lines
810 B
Go
package main
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import (
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"bytes"
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"testing"
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)
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func TestPrefixedLogger(t *testing.T) {
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var (
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buf = bytes.NewBuffer([]byte{})
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pl = newPrefixedLogger(buf, "baum")
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n int
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err error
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)
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n, err = pl.Write([]byte("non-newline terminated string"))
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if n != 29 || err != nil {
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t.Fatalf("Write to prefixedLogger had unexpected results: n=29 != %d, err=nil != %s", n, err)
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}
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if n = len(buf.Bytes()); n != 0 {
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t.Fatalf("Buffer contains %d characters, should contain 0", n)
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}
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pl.Write([]byte("now a newline\nand something"))
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if n = len(buf.Bytes()); n != 50 {
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t.Fatalf("Buffer contains %d characters, should contain 50", n)
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}
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pl.Write([]byte(" more to log\nwith multiple\nnewlines\n"))
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if n = len(buf.Bytes()); n != 120 {
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t.Fatalf("Buffer contains %d characters, should contain 120", n)
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}
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}
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