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cli_test.go
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cli_test.go
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package main
import (
"bytes"
"strings"
"testing"
)
type param struct {
args string
stdin string
exitCode int
stdout string
stderr string
}
func TestSplitLines(t *testing.T) {
params := []param{
{args: "-l -n 1", stdin: "first\nsecond\n", exitCode: 0, stdout: "first\nsecond\n"},
{args: "-l -n 2", stdin: "first\nsecond\n", exitCode: 0, stdout: "firstsecond\n"},
{args: "-l -n 2", stdin: "first\n\nsecond\n", exitCode: 0, stdout: "first\nsecond\n"},
{args: "-l -n 2 -d _", stdin: "first\nsecond\n", exitCode: 0, stdout: "first_second\n"},
{args: "-l -n 3", stdin: "first\nsecond\nthird\n", exitCode: 0, stdout: "firstsecondthird\n"},
{args: "-l -n 3", stdin: "first\n\nsecond\n\nthird\n", exitCode: 0, stdout: "firstsecond\nthird\n"},
}
testRun(t, params)
}
func testRun(t *testing.T, params []param) {
for _, p := range params {
c, outStream, errStream := newCLI(p.stdin)
args := strings.Split(" "+p.args, " ")
options = dangoOptions{}
exitCode := c.run(args)
if exitCode != p.exitCode {
t.Errorf("run(%s): Output = %q; want %q", args, exitCode, p.exitCode)
}
if outStream.String() != p.stdout {
t.Errorf("run(%s): Output = %q; want %q", args, outStream.String(), p.stdout)
}
if errStream.String() != p.stderr {
t.Errorf("run(%s): Err output = %q; want %q", args, errStream.String(), p.stderr)
}
}
}
func newCLI(stdin string) (c cli, outStream, errStream *bytes.Buffer) {
inStream := bytes.NewBufferString(stdin)
outStream = bytes.NewBuffer(nil)
errStream = bytes.NewBuffer(nil)
c = cli{inStream: inStream, outStream: outStream, errStream: errStream}
return
}
func TestSplitWords(t *testing.T) {
params := []param{
{args: "-w -n 1", stdin: "first\nsecond\n", exitCode: 0, stdout: "first\nsecond\n"},
{args: "-w -n 1", stdin: "first second\n", exitCode: 0, stdout: "first\nsecond\n"},
{args: "-w -n 2", stdin: "first\nsecond\n", exitCode: 0, stdout: "firstsecond\n"},
{args: "-w -n 2", stdin: "first\n\nsecond\n", exitCode: 0, stdout: "firstsecond\n"},
{args: "-w -n 2 -d _", stdin: "first\nsecond\n", exitCode: 0, stdout: "first_second\n"},
{args: "-w -n 3", stdin: "first\nsecond\nthird\n", exitCode: 0, stdout: "firstsecondthird\n"},
{args: "-w -n 3", stdin: "first\n\nsecond\n\nthird\n", exitCode: 0, stdout: "firstsecondthird\n"},
}
testRun(t, params)
}
func TestSplitCharacters(t *testing.T) {
params := []param{
{args: "-c -n 1", stdin: "12\n", exitCode: 0, stdout: "1\n2\n\n\n"},
{args: "-c -n 2", stdin: "1\n2\n", exitCode: 0, stdout: "1\n\n2\n\n"},
{args: "-c -n 2", stdin: "1234\n", exitCode: 0, stdout: "12\n34\n\n\n"},
{args: "-c -n 2", stdin: "12\n\n34\n", exitCode: 0, stdout: "12\n\n\n\n34\n\n\n"},
{args: "-c -n 2 -d _", stdin: "1234\n", exitCode: 0, stdout: "1_2\n3_4\n\n\n"},
{args: "-c -n 2", stdin: "1\n2\n", exitCode: 0, stdout: "1\n\n2\n\n"},
{args: "-c -n 3", stdin: "1\n2\n", exitCode: 0, stdout: "1\n2\n\n\n"},
}
testRun(t, params)
}
func TestSplitBytes(t *testing.T) {
params := []param{
{args: "-b -n 1", stdin: "12\n", exitCode: 0, stdout: "1\n2\n\n\n"},
{args: "-b -n 2", stdin: "12\n", exitCode: 0, stdout: "12\n\n\n"},
{args: "-b -n 2", stdin: "1\n2\n", exitCode: 0, stdout: "1\n\n2\n\n"},
{args: "-b -n 2", stdin: "1234\n", exitCode: 0, stdout: "12\n34\n\n\n"},
{args: "-b -n 2", stdin: "12\n\n34\n", exitCode: 0, stdout: "12\n\n\n\n34\n\n\n"},
{args: "-b -n 2 -d _", stdin: "1234\n", exitCode: 0, stdout: "1_2\n3_4\n\n\n"},
}
testRun(t, params)
}
func TestBufferSize(t *testing.T) {
params := []param{
{args: "-l -n 1 -B 1", stdin: "a\n", exitCode: 1, stdout: "", stderr: "failed to scan stdin: bufio.Scanner: token too long\n"},
{args: "-l -n 1 -B 2", stdin: "a\n", exitCode: 0, stdout: "a\n", stderr: ""},
}
testRun(t, params)
}