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application_test.go
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application_test.go
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package main
import (
"github.com/dpinela/mflg/internal/buffer"
"github.com/dpinela/mflg/internal/config"
"github.com/dpinela/mflg/internal/termdraw"
"github.com/dpinela/mflg/internal/termesc"
"testing"
"io"
"io/ioutil"
"os"
"path/filepath"
"strings"
"time"
)
const (
stdWidth = 40
stdHeight = 20
)
var ellipsifyTests = []struct {
in string
width int
out string
}{
{"érrôr writing lápis.txt", 23, "érrôr writing lápis.txt"},
{"érrôr wrîting lápis.txt", 10, "érrôr w..."},
{"error", 2, ".."},
{"error", 1, "."},
{"error", 0, ""},
{"er", 3, "er"},
{"er", 2, "er"},
}
func TestEllipsify(t *testing.T) {
for _, tt := range ellipsifyTests {
if got := ellipsify(tt.in, tt.width); got != tt.out {
t.Errorf("ellipsify(%q, %d) = %q; want %q", tt.in, tt.width, got, tt.out)
}
}
}
func newTestApplication() *application {
app := newApplication(ioutil.Discard, termdraw.Point{X: stdWidth, Y: stdHeight})
app.config = &config.Config{TabWidth: 4}
return app
}
func TestMouseEventsOutsidePrompt(t *testing.T) {
app := newTestApplication()
defer app.fsWatcher.Close()
app.mainWindow = newWindow(app, stdWidth, stdHeight, buffer.New())
app.promptWindow = newWindow(app, stdWidth, 1, buffer.New())
app.handleMouseEvent(termesc.MouseEvent{X: 5, Y: 5, Move: true, Button: termesc.NoButton})
if app.promptWindow == nil {
t.Error("after mouse move outside prompt, prompt window was closed, shouldn't have been")
}
app.handleMouseEvent(termesc.MouseEvent{X: 6, Y: 6, Button: termesc.ReleaseButton})
if app.promptWindow != nil {
t.Error("after mouse click ouside prompt, prompt window wasn't closed, should have been")
}
}
// An inactiveReader is a Reader that blocks arbitrarily long, then immediately yields EOF. This is used
// to test parts of the application's event loop in isolation.
type inactiveReader chan struct{}
func (r inactiveReader) Read(b []byte) (int, error) {
<-r
return 0, io.EOF
}
func TestAutoSave(t *testing.T) {
f, err := ioutil.TempFile("", "mflg-auto-save-test")
if err != nil {
t.Fatal(err)
}
name := f.Name()
f.Close()
defer os.Remove(name)
app := newTestApplication()
defer app.fsWatcher.Close()
app.saveDelay = time.Second / 20
if err := app.navigateTo(name); err != nil {
t.Fatal(err)
}
app.resize(stdHeight, stdWidth)
fakeConsole := make(inactiveReader)
defer close(fakeConsole)
go app.run(fakeConsole, nil)
typeString(app.mainWindow, "ABC")
// This test is inherently flaky, because the autosave timer is running concurrently with this code.
// To properly fix this flakiness, we would need a fake clock.
time.Sleep(time.Second / 4)
checkFileContents(t, name, "ABC")
typeString(app.mainWindow, "\rBlorp")
time.Sleep(time.Second / 4)
checkFileContents(t, name, "ABC\nBlorp")
app.mainWindow.selection.Put(buffer.Range{point{0, 1}, point{3, 1}})
app.mainWindow.backspace()
time.Sleep(time.Second / 4)
checkFileContents(t, name, "ABC\nrp")
}
func TestNavigation(t *testing.T) {
d, err := filepath.Abs("testdata")
if err != nil {
t.Fatal(err)
}
if strings.IndexByte(d, ':') != -1 || filepath.Separator == ':' {
t.Fatal("generated file names will contain colons; some navigation syntax is ambiguous in this case")
}
nameA := filepath.Join(d, "A")
nameB := filepath.Join(d, "B")
app := newTestApplication()
defer app.fsWatcher.Close()
t.Run("Start", func(t *testing.T) {
app.testNav(t, nameA)
app.checkLocation(t, nameA, 0)
})
t.Run("SameFile", func(t *testing.T) {
app.testNav(t, ":3")
app.checkLocation(t, nameA, 2)
app.testNav(t, ":^.psu")
app.checkLocation(t, nameA, 1)
app.testNav(t, nameA+":1")
app.checkLocation(t, nameA, 0)
})
t.Run("DifferentFiles", func(t *testing.T) {
app.testNav(t, nameB)
app.checkLocation(t, nameB, 0)
app.mainWindow.moveCursorRight()
app.testNav(t, nameA+":2")
app.checkLocation(t, nameA, 1)
})
t.Run("Back", func(t *testing.T) {
app.testBack(t)
app.checkFullLocation(t, nameB, point{X: 1, Y: 0})
app.testBack(t)
app.checkLocation(t, nameA, 0)
// Avoid passing this last test by coincidence; the location before this sub-test is nameA:1
app.testBack(t)
app.testBack(t)
app.checkLocation(t, nameA, 2)
})
t.Run("DifferentFilesRelative", func(t *testing.T) {
app.testNav(t, "A:2")
app.checkLocation(t, nameA, 1)
nameC := filepath.Join("X", "B")
app.testNav(t, nameC)
app.checkLocation(t, filepath.Join(d, nameC), 0)
app.testNav(t, filepath.Join("..", "A"))
app.checkLocation(t, nameA, 0)
})
t.Run("ShellFilenameExpansion", func(t *testing.T) {
defer func(old func() (string, error)) { homeDir = old }(homeDir)
homeDir = func() (string, error) { return d, nil }
if err := os.Setenv("NEW_FILE", "C"); err != nil {
t.Error(err)
}
app.testNav(t, "~/$NEW_FILE")
app.checkLocation(t, filepath.Join(d, "C"), 0)
})
t.Run("CycleRegexMatches", func(t *testing.T) {
app.testNav(t, "B:[ae]t$")
app.checkLocation(t, nameB, 1)
app.gotoNextMatch()
app.checkLocation(t, nameB, 2)
app.gotoNextMatch()
app.checkLocation(t, nameB, 4)
app.testBack(t)
app.checkLocation(t, nameB, 2)
app.gotoNextMatch()
app.checkLocation(t, nameB, 4)
app.gotoNextMatch()
app.checkLocation(t, nameB, 1)
app.mainWindow.cursorPos = point{X: 1, Y: 3}
app.gotoNextMatch()
app.checkLocation(t, nameB, 4)
})
}
func (app *application) testNav(t *testing.T, dest string) {
t.Helper()
if err := app.navigateTo(dest); err != nil {
t.Error(err)
}
}
func (app *application) testBack(t *testing.T) {
t.Helper()
if err := app.back(); err != nil {
t.Error(err)
}
}
func (app *application) checkLocation(t *testing.T, filename string, lineNum int) {
t.Helper()
app.checkFullLocation(t, filename, buffer.Point{X: 0, Y: lineNum})
}
func (app *application) checkFullLocation(t *testing.T, filename string, wantTP buffer.Point) {
t.Helper()
tp := app.mainWindow.windowCoordsToTextCoords(app.mainWindow.cursorPos)
if app.currentFile() != filename || tp != wantTP {
t.Errorf("editor at %s:%v, want %[1]s:%[3]v", app.currentFile(), tp, wantTP)
}
}
func checkFileContents(t *testing.T, filename, want string) {
t.Helper()
data, err := ioutil.ReadFile(filename)
if err != nil {
t.Error(err)
}
if got := string(data); got != want {
t.Errorf("ReadFile(%q): got %q, want %q", filename, got, want)
}
}