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65 lines
1.4 KiB
Go
65 lines
1.4 KiB
Go
package progress
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import "testing"
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// A Printer can can return a new counter or print messages
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// at different log levels.
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// It must be safe to call its methods from concurrent goroutines.
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type Printer interface {
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NewCounter(description string) *Counter
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E(msg string, args ...interface{})
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P(msg string, args ...interface{})
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V(msg string, args ...interface{})
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VV(msg string, args ...interface{})
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}
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// NoopPrinter discards all messages
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type NoopPrinter struct{}
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var _ Printer = (*NoopPrinter)(nil)
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func (*NoopPrinter) NewCounter(_ string) *Counter {
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return nil
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}
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func (*NoopPrinter) E(_ string, _ ...interface{}) {}
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func (*NoopPrinter) P(_ string, _ ...interface{}) {}
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func (*NoopPrinter) V(_ string, _ ...interface{}) {}
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func (*NoopPrinter) VV(_ string, _ ...interface{}) {}
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// TestPrinter prints messages during testing
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type TestPrinter struct {
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t testing.TB
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}
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func NewTestPrinter(t testing.TB) *TestPrinter {
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return &TestPrinter{
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t: t,
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}
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}
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var _ Printer = (*TestPrinter)(nil)
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func (p *TestPrinter) NewCounter(_ string) *Counter {
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return nil
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}
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func (p *TestPrinter) E(msg string, args ...interface{}) {
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p.t.Logf("error: "+msg, args...)
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}
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func (p *TestPrinter) P(msg string, args ...interface{}) {
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p.t.Logf("print: "+msg, args...)
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}
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func (p *TestPrinter) V(msg string, args ...interface{}) {
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p.t.Logf("verbose: "+msg, args...)
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}
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func (p *TestPrinter) VV(msg string, args ...interface{}) {
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p.t.Logf("verbose2: "+msg, args...)
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}
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