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128 lines
3.5 KiB
Go
128 lines
3.5 KiB
Go
package m
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import (
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"testing"
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"github.com/walles/moar/twin"
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"gotest.tools/v3/assert"
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)
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func modeName(pager *Pager) string {
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switch pager.mode.(type) {
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case PagerModeViewing:
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return "Viewing"
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case PagerModeNotFound:
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return "NotFound"
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case PagerModeSearch:
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return "Search"
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case *PagerModeGotoLine:
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return "GotoLine"
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default:
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panic("Unknown pager mode")
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}
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}
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// Create a pager with three screen lines reading from a six lines stream
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func createThreeLinesPager(t *testing.T) *Pager {
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reader := NewReaderFromText("", "a\nb\nc\nd\ne\nf\n")
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screen := twin.NewFakeScreen(20, 3)
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pager := NewPager(reader)
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pager.screen = screen
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assert.Equal(t, "Viewing", modeName(pager), "Initial pager state")
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return pager
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}
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func TestScrollToNextSearchHit_StartAtBottom(t *testing.T) {
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// Create a pager scrolled to the last line
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pager := createThreeLinesPager(t)
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pager.scrollToEnd()
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// Set the search to something that doesn't exist in this pager
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pager.searchString = "xxx"
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pager.searchPattern = toPattern(pager.searchString)
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// Scroll to the next search hit
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pager.scrollToNextSearchHit()
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assert.Equal(t, "NotFound", modeName(pager))
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}
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func TestScrollToNextSearchHit_StartAtTop(t *testing.T) {
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// Create a pager scrolled to the first line
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pager := createThreeLinesPager(t)
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// Set the search to something that doesn't exist in this pager
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pager.searchString = "xxx"
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pager.searchPattern = toPattern(pager.searchString)
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// Scroll to the next search hit
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pager.scrollToNextSearchHit()
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assert.Equal(t, "NotFound", modeName(pager))
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}
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func TestScrollToNextSearchHit_WrapAfterNotFound(t *testing.T) {
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// Create a pager scrolled to the last line
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pager := createThreeLinesPager(t)
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pager.scrollToEnd()
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// Search for "a", it's on the first line (ref createThreeLinesPager())
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pager.searchString = "a"
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pager.searchPattern = toPattern(pager.searchString)
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// Scroll to the next search hit, this should take us into _NotFound
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pager.scrollToNextSearchHit()
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assert.Equal(t, "NotFound", modeName(pager))
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// Scroll to the next search hit, this should wrap the search and take us to
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// the top
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pager.scrollToNextSearchHit()
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assert.Equal(t, "Viewing", modeName(pager))
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assert.Assert(t, pager.lineNumber().IsZero())
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}
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func TestScrollToNextSearchHit_WrapAfterFound(t *testing.T) {
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// Create a pager scrolled to the last line
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pager := createThreeLinesPager(t)
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pager.scrollToEnd()
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// Search for "f", it's on the last line (ref createThreeLinesPager())
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pager.searchString = "f"
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pager.searchPattern = toPattern(pager.searchString)
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// Scroll to the next search hit, this should take us into _NotFound
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pager.scrollToNextSearchHit()
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assert.Equal(t, "NotFound", modeName(pager))
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// Scroll to the next search hit, this should wrap the search and take us
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// back to the bottom again
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pager.scrollToNextSearchHit()
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assert.Equal(t, "Viewing", modeName(pager))
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assert.Equal(t, 5, pager.lineNumber().AsOneBased())
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}
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// Ref: https://github.com/walles/moar/issues/152
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func Test152(t *testing.T) {
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// Show a pager on a five lines terminal
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reader := NewReaderFromText("", "a\nab\nabc\nabcd\nabcde\nabcdef\n")
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screen := twin.NewFakeScreen(20, 5)
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pager := NewPager(reader)
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pager.screen = screen
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assert.Equal(t, "Viewing", modeName(pager), "Initial pager state")
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// Search for the first not-visible hit
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pager.searchString = "abcde"
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searchMode := PagerModeSearch{pager: pager}
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pager.mode = searchMode
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// Scroll to the next search hit
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searchMode.updateSearchPattern()
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assert.Equal(t, "Search", modeName(pager))
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assert.Equal(t, 3, pager.lineNumber().AsOneBased())
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}
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