64 lines
1.9 KiB
Go
64 lines
1.9 KiB
Go
package app
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import (
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"strings"
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"testing"
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)
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func TestViewportRendererShiftsCursor(t *testing.T) {
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vr := newViewportRenderer(newTerminalLayout(120, 40))
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got := string(vr.Render([]byte("\x1b[H")))
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if got != "\x1b[2;1H" {
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t.Fatalf("CUP home: got %q", got)
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}
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}
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func TestViewportRendererSwallowsAltScreenToggles(t *testing.T) {
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vr := newViewportRenderer(newTerminalLayout(120, 40))
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got := string(vr.Render([]byte("a\x1b[?1049hb\x1b[?1049lc")))
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if got != "abc" {
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t.Fatalf("alt-screen toggles: got %q", got)
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}
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}
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func TestViewportRendererClearScreenIsViewportOnly(t *testing.T) {
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vr := newViewportRenderer(newTerminalLayout(20, 5))
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got := string(vr.Render([]byte("\x1b[2J")))
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if strings.Contains(got, "\x1b[2J") {
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t.Fatalf("host clear-screen leaked through: %q", got)
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}
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if strings.Count(got, " ") != 3 {
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t.Fatalf("clear rows: got %q", got)
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}
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if !strings.Contains(got, "\x1b[2;1H") || !strings.Contains(got, "\x1b[4;1H") {
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t.Fatalf("clear did not target viewport rows: %q", got)
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}
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}
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func TestViewportRendererClearLineUsesEraseChars(t *testing.T) {
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vr := newViewportRenderer(newTerminalLayout(20, 5))
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got := string(vr.Render([]byte("\x1b[K")))
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if strings.Contains(got, "\x1b[K") {
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t.Fatalf("host clear-line leaked through: %q", got)
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}
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if got != "\x1b[20X" {
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t.Fatalf("clear-line: got %q want ECH", got)
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}
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}
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func TestViewportRendererClearLineStopsAtViewportRight(t *testing.T) {
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vr := newViewportRenderer(newTerminalLayout(20, 5))
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got := string(vr.Render([]byte("\x1b[10G\x1b[K")))
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if !strings.HasSuffix(got, "\x1b[11X") {
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t.Fatalf("clear-line from col 10 should erase 11 cells: %q", got)
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}
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}
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func TestViewportRendererTracksPrintableCursor(t *testing.T) {
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vr := newViewportRenderer(newTerminalLayout(20, 5))
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got := string(vr.Render([]byte("hello\x1b[K")))
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if !strings.HasSuffix(got, "\x1b[15X") {
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t.Fatalf("clear-line after five chars should erase 15 cells: %q", got)
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}
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}
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