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package main
import (
"bytes"
"fmt"
"io"
"os"
"testing"
)
func TestContainerFormatStringOutput(t *testing.T) {
params := containerOutputParams{
ContainerID: "e477836657bb",
Builder: " ",
ImageID: "f975c5035748",
ImageName: "test/with/this/very/long/image:latest",
ContainerName: "test-container",
}
const trimmedImageName = "test/with/this/very/long/imag..."
output := captureOutput(func() {
containerOutputUsingFormatString(true, params)
})
expectedOutput := fmt.Sprintf("%-12.12s %-8s %-12.12s %-32s %s\n", params.ContainerID, params.Builder, params.ImageID, trimmedImageName, params.ContainerName)
if output != expectedOutput {
t.Errorf("Error outputting using format string:\n\texpected: %s\n\treceived: %s\n", expectedOutput, output)
}
output = captureOutput(func() {
containerOutputUsingFormatString(false, params)
})
expectedOutput = fmt.Sprintf("%-64s %-8s %-64s %-32s %s\n", params.ContainerID, params.Builder, params.ImageID, params.ImageName, params.ContainerName)
if output != expectedOutput {
t.Errorf("Error outputting using format string:\n\texpected: %s\n\treceived: %s\n", expectedOutput, output)
}
}
func TestContainerHeaderOutput(t *testing.T) {
output := captureOutput(func() {
containerOutputHeader(true)
})
expectedOutput := fmt.Sprintf("%-12s %-8s %-12s %-32s %s\n", "CONTAINER ID", "BUILDER", "IMAGE ID", "IMAGE NAME", "CONTAINER NAME")
if output != expectedOutput {
t.Errorf("Error outputting using format string:\n\texpected: %s\n\treceived: %s\n", expectedOutput, output)
}
output = captureOutput(func() {
containerOutputHeader(false)
})
expectedOutput = fmt.Sprintf("%-64s %-8s %-64s %-32s %s\n", "CONTAINER ID", "BUILDER", "IMAGE ID", "IMAGE NAME", "CONTAINER NAME")
if output != expectedOutput {
t.Errorf("Error outputting using format string:\n\texpected: %s\n\treceived: %s\n", expectedOutput, output)
}
}
// Captures output so that it can be compared to expected values
func captureOutput(f func()) string {
old := os.Stdout
r, w, _ := os.Pipe()
os.Stdout = w
f()
w.Close()
os.Stdout = old
var buf bytes.Buffer
io.Copy(&buf, r) //nolint
return buf.String()
}
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