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log_test.go
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log_test.go
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package gantry_test
import (
"bufio"
"bytes"
"fmt"
"log"
"testing"
"github.com/ad-freiburg/gantry"
)
func TestColorStoreNextColor(t *testing.T) {
var cases = []struct {
store *gantry.ColorStore
results []int
}{
{gantry.NewColorStore([]int{42}), []int{42, 42, 42, 42, 42}},
{gantry.NewColorStore([]int{21, 42}), []int{21, 42, 21, 42, 21}},
}
for _, c := range cases {
for i, v := range c.results {
color := c.store.NextColor()
if color != v {
t.Errorf("Incorrect color for index %d, got: %d, wanted: %d", i, color, v)
}
}
}
}
func TestPrefixedWriterWrite(t *testing.T) {
input := []byte("Hello World")
buf := bytes.NewBuffer([]byte(""))
writer := bufio.NewWriter(buf)
pw := gantry.NewPrefixedWriter("prefix", writer)
n, err := pw.Write(input)
if err != nil {
t.Errorf("Got unexpected errror: %#v", err)
}
if n != len(input) {
t.Errorf("Incorrect number of bytes written, got: '%d', wanted: '%d'", n, len(input))
}
writer.Flush()
expected := fmt.Sprintf(gantry.PrefixedWriterFormat, "prefix", string(input))
result := buf.String()
if result != expected {
t.Errorf("Incorrect buffer contents, got: '%s', wanted: '%s'", result, expected)
}
input2 := []byte("!\nSecond line")
n, err = pw.Write(input2)
writer.Flush()
if err != nil {
t.Errorf("Got unexpected errror: %#v", err)
}
if n != len(input2) {
t.Errorf("Incorrect number of bytes written, got: '%d', wanted: '%d'", n, len(input2))
}
expected = fmt.Sprintf(
"%s%s%s",
fmt.Sprintf(gantry.PrefixedWriterFormat, "prefix", string(input)),
fmt.Sprintf(gantry.PrefixedWriterFormat, "prefix", "!\n"),
fmt.Sprintf(gantry.PrefixedWriterFormat, "prefix", "Second line"))
result = buf.String()
if result != expected {
t.Errorf("Incorrect buffer contents, got: '%s', wanted: '%s'", result, expected)
}
}
func TestPrefixedLoggerPrintf(t *testing.T) {
buf := bytes.NewBuffer([]byte(""))
writer := bufio.NewWriter(buf)
// Create new logger without date and time
logger := gantry.NewPrefixedLogger("prefix", log.New(writer, "", 0))
logger.Printf("%s:%d", "Answer", 42)
writer.Flush()
result := buf.String()
expected := fmt.Sprintf(gantry.PrefixedWriterFormat, "prefix", "Answer:42") + "\n"
if result != expected {
t.Errorf("Incorrect buffer contents, got: '%s', wanted: '%s'", result, expected)
}
}
func TestPrefixedLoggerPrintln(t *testing.T) {
buf := bytes.NewBuffer([]byte(""))
writer := bufio.NewWriter(buf)
// Create new logger without date and time
logger := gantry.NewPrefixedLogger("prefix", log.New(writer, "", 0))
logger.Println("A line!")
writer.Flush()
result := buf.String()
expected := fmt.Sprintf(gantry.PrefixedWriterFormat, "prefix", "A line!\n") + "\n"
if result != expected {
t.Errorf("Incorrect buffer contents, got: '%s', wanted: '%s'", result, expected)
}
}
func TestPrefixedLoggerWrite(t *testing.T) {
buf := bytes.NewBuffer([]byte(""))
writer := bufio.NewWriter(buf)
// Create new logger without date and time
logger := gantry.NewPrefixedLogger("prefix", log.New(writer, "", 0))
if _, err := logger.Write([]byte("A\nB\n")); err != nil {
t.Error(err)
}
writer.Flush()
result := buf.String()
expected := fmt.Sprintf(gantry.PrefixedWriterFormat, "prefix", "A") + "\n" + fmt.Sprintf(gantry.PrefixedWriterFormat, "prefix", "B") + "\n"
if result != expected {
t.Errorf("Incorrect buffer contents, got: '%s', wanted: '%s'", result, expected)
t.Errorf("Incorrect buffer contents, got: '%#v', wanted: '%#v'", result, expected)
}
}