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package common
import "testing"
func TestEffectiveViewport(t *testing.T) {
originalQuery := queryTerminalSize
t.Cleanup(func() {
queryTerminalSize = originalQuery
})
queryTerminalSize = func() (int, int, error) {
return 132, 41, nil
}
tests := []struct {
name string
width int
height int
wantWidth int
wantHeight int
}{
{
name: "provided dimensions",
width: 120,
height: 40,
wantWidth: 120,
wantHeight: 40,
},
{
name: "both missing use terminal size",
width: 0,
height: 0,
wantWidth: 132,
wantHeight: 41,
},
{
name: "missing height uses terminal size",
width: 100,
height: 0,
wantWidth: 100,
wantHeight: 41,
},
{
name: "missing width uses terminal size",
width: -1,
height: 30,
wantWidth: 132,
wantHeight: 30,
},
}
for _, tt := range tests {
gotWidth, gotHeight := EffectiveViewport(tt.width, tt.height)
if gotWidth != tt.wantWidth || gotHeight != tt.wantHeight {
t.Fatalf("%s: got (%d,%d), want (%d,%d)", tt.name, gotWidth, gotHeight, tt.wantWidth, tt.wantHeight)
}
}
}
func TestEffectiveViewportFallsBackToDefaultsWhenTerminalQueryFails(t *testing.T) {
originalQuery := queryTerminalSize
t.Cleanup(func() {
queryTerminalSize = originalQuery
})
queryTerminalSize = func() (int, int, error) {
return 0, 0, assertiveError{}
}
gotWidth, gotHeight := EffectiveViewport(0, 0)
if gotWidth != defaultViewportWidth || gotHeight != defaultViewportHeight {
t.Fatalf("got (%d,%d), want (%d,%d)", gotWidth, gotHeight, defaultViewportWidth, defaultViewportHeight)
}
}
type assertiveError struct{}
func (assertiveError) Error() string { return "terminal query failed" }
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