João Salavisa
c5c591b60b
Co-authored-by: Kandev Agent <agent@kandev.dev> Co-authored-by: Claude Opus 5 (1M context) <noreply@anthropic.com>
36 lines
1.2 KiB
Go
36 lines
1.2 KiB
Go
package process
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import (
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"math"
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"testing"
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)
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// TestPTYDimension covers the narrowing guard in front of ptyexec.Start.
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// InteractiveStartRequest.DefaultCols/DefaultRows arrive as plain ints off the
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// wire with nothing upstream bounding them, so an out-of-range value must land
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// on the default instead of wrapping into a bogus small terminal.
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func TestPTYDimension(t *testing.T) {
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tests := []struct {
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name string
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in int
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fallback int
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want uint16
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}{
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{"typical", 120, defaultPTYCols, 120},
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{"one", 1, defaultPTYCols, 1},
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{"max representable", math.MaxUint16, defaultPTYCols, math.MaxUint16},
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{"zero falls back", 0, defaultPTYCols, defaultPTYCols},
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{"negative falls back", -1, defaultPTYRows, defaultPTYRows},
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// Without the upper guard these would wrap: 65536 -> 0 and 100000 -> 34464.
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{"just over max falls back", math.MaxUint16 + 1, defaultPTYCols, defaultPTYCols},
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{"far over max falls back", 100000, defaultPTYRows, defaultPTYRows},
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}
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for _, tt := range tests {
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t.Run(tt.name, func(t *testing.T) {
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if got := ptyDimension(tt.in, tt.fallback); got != tt.want {
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t.Errorf("ptyDimension(%d, %d) = %d, want %d", tt.in, tt.fallback, got, tt.want)
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}
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})
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}
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}
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