37 lines
787 B
Go
37 lines
787 B
Go
// FILE: internal/util/file_test.go
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package util
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import (
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"bytes"
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"os"
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"testing"
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)
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func TestReadNLines(t *testing.T) {
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// Create a temporary file
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tmpfile, err := os.CreateTemp("", "testfile")
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if err != nil {
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t.Fatal(err)
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}
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defer os.Remove(tmpfile.Name()) // clean up
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// Write some lines to the temporary file
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content := []byte("line1\nline2\nline3\nline4\nline5\n")
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if _, err := tmpfile.Write(content); err != nil {
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t.Fatal(err)
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}
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if err := tmpfile.Close(); err != nil {
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t.Fatal(err)
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}
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// Test the ReadNLines function
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lines, err := ReadNLines(tmpfile.Name(), 3)
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if err != nil {
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t.Fatalf("ReadNLines failed: %v", err)
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}
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expected := []byte("line1\nline2\nline3\n")
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if !bytes.Equal(lines, expected) {
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t.Errorf("Expected %q, got %q", expected, lines)
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}
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}
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