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package lsp
import "testing"
func TestExtractRangeText_NilDocument(t *testing.T) {
got := extractRangeText(nil, Range{})
if got != "" {
t.Fatalf("expected empty, got %q", got)
}
}
func TestExtractRangeText_EmptyLines(t *testing.T) {
d := &document{lines: []string{}}
got := extractRangeText(d, Range{Start: Position{0, 0}, End: Position{0, 5}})
if got != "" {
t.Fatalf("expected empty, got %q", got)
}
}
func TestExtractRangeText_NegativeStartLine(t *testing.T) {
d := &document{lines: []string{"hello"}}
got := extractRangeText(d, Range{Start: Position{-1, 0}, End: Position{0, 3}})
if got != "" {
t.Fatalf("expected empty, got %q", got)
}
}
func TestExtractRangeText_NegativeEndLine(t *testing.T) {
d := &document{lines: []string{"hello"}}
got := extractRangeText(d, Range{Start: Position{0, 0}, End: Position{-1, 3}})
if got != "" {
t.Fatalf("expected empty, got %q", got)
}
}
func TestExtractRangeText_StartLineBeyondEnd(t *testing.T) {
d := &document{lines: []string{"hello", "world"}}
got := extractRangeText(d, Range{Start: Position{5, 0}, End: Position{6, 0}})
if got != "" {
t.Fatalf("expected empty, got %q", got)
}
}
func TestExtractRangeText_EndLineBeyondEnd(t *testing.T) {
// End line is clamped to the last valid line.
d := &document{lines: []string{"hello", "world"}}
got := extractRangeText(d, Range{Start: Position{0, 0}, End: Position{10, 5}})
if got != "hello\nworld" {
t.Fatalf("expected clamped result, got %q", got)
}
}
func TestExtractRangeText_StartAfterEnd(t *testing.T) {
d := &document{lines: []string{"aaa", "bbb"}}
got := extractRangeText(d, Range{Start: Position{1, 0}, End: Position{0, 2}})
if got != "" {
t.Fatalf("expected empty, got %q", got)
}
}
func TestExtractRangeText_SingleLine(t *testing.T) {
d := &document{lines: []string{"hello world"}}
got := extractRangeText(d, Range{Start: Position{0, 6}, End: Position{0, 11}})
if got != "world" {
t.Fatalf("expected %q, got %q", "world", got)
}
}
func TestExtractRangeText_SingleLineNegativeChar(t *testing.T) {
d := &document{lines: []string{"hello"}}
got := extractRangeText(d, Range{Start: Position{0, -3}, End: Position{0, 3}})
if got != "hel" {
t.Fatalf("expected %q, got %q", "hel", got)
}
}
func TestExtractRangeText_MultiLine(t *testing.T) {
d := &document{lines: []string{"aaa", "bbb", "ccc"}}
got := extractRangeText(d, Range{Start: Position{0, 1}, End: Position{2, 2}})
if got != "aa\nbbb\ncc" {
t.Fatalf("expected %q, got %q", "aa\nbbb\ncc", got)
}
}
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