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linefile_test.go~
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linefile_test.go~
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package main
import (
"os"
"strconv"
"testing"
)
var lineFiles []*LineFile
func TestMain(m *testing.M) {
// The small test file has 5 lines, 10 lines per index pages will result in one index page
lineFiles = append(lineFiles, NewLineFile("./text_file_small1.txt", 10))
// The small test file has 5 lines, 2 lines per index pages will result in more than one index page
lineFiles = append(lineFiles, NewLineFile("./text_file_small2.txt", 2))
// The small test file has 1,000,000 lines
lineFiles = append(lineFiles, NewLineFile("./text_file_1M_line.txt", 1000))
os.Exit(m.Run())
}
// TestLineFileBuildIndex tests index building on all LineFile objects
func TestLineFileBuildIndex(t *testing.T) {
for i := 0; i < len(lineFiles); i++ {
lineFile := lineFiles[i]
lineFile.BuildIndex()
if !lineFile.indexCompleted {
t.Errorf("indexCompleted is not correct: got %v, expected: %v", lineFile.indexCompleted, true)
}
}
}
// TestLineFileLineGet tests "get line by line number" on the first two LineFile objects
// - one with one index page, the other with multiple index pages
func TestLineFileLineGet(t *testing.T) {
expectedLines := []string{"a", "b", "c", "d"}
for f := 0; f < 2; f++ {
for i := 1; i < 5; i++ {
lineFile := lineFiles[f]
status, line := lineFile.GetLine(i)
if status != 200 || line != expectedLines[i-1] {
t.Errorf("Get line at %d: got %s, expected: %s", i, line, expectedLines[i])
}
}
}
}
// TestLineFileErrCases tests "get line by invalid line number" on the first two LineFile objects
// - one with one index page, the other with multiple index pages
func TestLineFile1MLineFile(t *testing.T) {
lineFile := lineFiles[2]
for i := 1; i <= 10; i++ {
t.Run(strconv.Itoa(i), func(t *testing.T) {
i := GetRandom(1000000)
status, _ := lineFile.GetLine(i)
if status != 200 {
t.Errorf("Get line at %d: got status %d", i, status)
}
})
}
}
// TestLineFileErrCases tests "get line by invalid line number" on the first two LineFile objects
// - one with one index page, the other with multiple index pages
func TestLineFileErrCases(t *testing.T) {
for f := 0; f < 2; f++ {
lineFile := lineFiles[f]
status, _ := lineFile.GetLine(0)
if status != 404 {
t.Errorf("Get line at 0: status - got %d, expected: %d", status, 404)
}
// The first two LineFile objects has 5 lines so line 6 should return 404 - not found.
status2, _ := lineFile.GetLine(6)
if status2 != 404 {
t.Errorf("Get line at 0: status - got %d, expected: %d", status, 404)
}
}
}