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package lbl
import (
"testing"
"github.com/stretchr/testify/assert"
)
func TestNewOrigin(t *testing.T) {
type scenario struct {
name string
origin int
bufferHeight int
firstLineIdx int
lastLineIdx int
selectedLineIdx int
selectMode selectMode
expected int
}
scenarios := []scenario{
{
name: "selection above scroll window",
origin: 50,
bufferHeight: 100,
firstLineIdx: 10,
lastLineIdx: 10,
selectedLineIdx: 10,
selectMode: LINE,
expected: 10,
},
{
name: "selection below scroll window",
origin: 0,
bufferHeight: 100,
firstLineIdx: 150,
lastLineIdx: 150,
selectedLineIdx: 150,
selectMode: LINE,
expected: 50,
},
{
name: "selection within scroll window",
origin: 0,
bufferHeight: 100,
firstLineIdx: 50,
lastLineIdx: 50,
selectedLineIdx: 50,
selectMode: LINE,
expected: 0,
},
{
name: "range ending below scroll window with selection at end of range",
origin: 0,
bufferHeight: 100,
firstLineIdx: 40,
lastLineIdx: 150,
selectedLineIdx: 150,
selectMode: RANGE,
expected: 50,
},
{
name: "range ending below scroll window with selection at beginning of range",
origin: 0,
bufferHeight: 100,
firstLineIdx: 40,
lastLineIdx: 150,
selectedLineIdx: 40,
selectMode: RANGE,
expected: 40,
},
{
name: "range starting above scroll window with selection at beginning of range",
origin: 50,
bufferHeight: 100,
firstLineIdx: 40,
lastLineIdx: 150,
selectedLineIdx: 40,
selectMode: RANGE,
expected: 40,
},
{
name: "hunk extending beyond both bounds of scroll window",
origin: 50,
bufferHeight: 100,
firstLineIdx: 40,
lastLineIdx: 200,
selectedLineIdx: 70,
selectMode: HUNK,
expected: 40,
},
}
for _, s := range scenarios {
s := s
t.Run(s.name, func(t *testing.T) {
assert.EqualValues(t, s.expected, calculateOrigin(s.origin, s.bufferHeight, s.firstLineIdx, s.lastLineIdx, s.selectedLineIdx, s.selectMode))
})
}
}
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