63 lines
1.8 KiB
Go
63 lines
1.8 KiB
Go
package ui
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import (
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"strings"
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"testing"
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"github.com/rivo/tview"
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)
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func TestRenderHelpFitsAndAligns(t *testing.T) {
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for _, width := range []int{40, 60, 76, 96} {
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text := renderHelp(width)
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var inItem bool
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for i, line := range strings.Split(text, "\n") {
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if w := tview.TaggedStringWidth(line); w > width {
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t.Errorf("width %d, line %d is %d columns wide: %q", width, i, w, line)
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}
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plain := plainText(line)
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// Descriptions wrap under themselves: a continuation line starts with
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// spaces up to the description column, never at the left edge.
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switch {
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case plain == "":
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inItem = false
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case !strings.HasPrefix(plain, " "):
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inItem = false // a section title
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case strings.HasPrefix(plain, strings.Repeat(" ", 2+helpKeyWidth)) && strings.TrimSpace(plain) != "":
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if !inItem {
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t.Errorf("width %d: continuation without an item before it: %q", width, plain)
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}
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default:
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inItem = true
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}
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}
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// Nothing is lost.
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for _, sec := range helpSections {
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if !strings.Contains(text, sec.title) {
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t.Errorf("width %d: section %q missing", width, sec.title)
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}
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for _, it := range sec.items {
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first := strings.Fields(it.desc)[0]
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if !strings.Contains(plainText(text), first) {
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t.Errorf("width %d: description of %q lost", width, it.keys)
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}
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}
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}
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}
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}
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func TestRenderHelpKeepsEveryWord(t *testing.T) {
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desc := "Changes apply live behind the dialog, also while you move through an open list"
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words := strings.Fields(desc)
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text := plainText(renderHelp(50))
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// Join the wrapped lines of the long Library "F" description and look for every word in order.
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pos := 0
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for _, w := range words {
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i := strings.Index(text[pos:], w)
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if i < 0 {
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t.Fatalf("word %q missing or out of order", w)
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}
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pos += i + len(w)
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}
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}
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