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|
package magic
import (
"bufio"
"strings"
"testing"
)
func TestMagic(t *testing.T) {
tCases := []struct {
name string
detector Detector
raw string
limit uint32
res bool
}{{
name: "incomplete JSON, limit 0",
detector: JSON,
raw: `["an incomplete JSON array`,
limit: 0,
res: false,
}, {
name: "incomplete JSON, limit 10",
detector: JSON,
raw: `["an incomplete JSON array`,
limit: 10,
res: true,
}, {
name: "basic JSON data type null",
detector: JSON,
raw: `null`,
limit: 10,
res: false,
}, {
name: "basic JSON data type string",
detector: JSON,
raw: `"abc"`,
limit: 10,
res: false,
}, {
name: "basic JSON data type integer",
detector: JSON,
raw: `120`,
limit: 10,
res: false,
}, {
name: "basic JSON data type float",
detector: JSON,
raw: `.120`,
limit: 10,
res: false,
}, {
name: "NdJSON with basic data types",
detector: NdJSON,
raw: "1\nnull\n\"foo\"\n0.1",
limit: 10,
res: false,
}, {
name: "NdJSON with basic data types and empty object",
detector: NdJSON,
raw: "1\n2\n3\n{}",
limit: 10,
res: true,
}, {
name: "NdJSON with empty objects types",
detector: NdJSON,
raw: "{}\n{}\n{}",
limit: 10,
res: true,
}, {
name: "MachO class or Fat but last byte > \\x14",
detector: MachO,
raw: "\xCA\xFE\xBA\xBE \x15",
res: false,
}, {
name: "MachO class or Fat and last byte < \\x14",
detector: MachO,
raw: "\xCA\xFE\xBA\xBE \x13",
res: true,
}, {
name: "MachO BE Magic32",
detector: MachO,
raw: "\xFE\xED\xFA\xCE",
res: true,
}, {
name: "MachO LE Magic32",
detector: MachO,
raw: "\xCE\xFA\xED\xFE",
res: true,
}, {
name: "MachO BE Magic64",
detector: MachO,
raw: "\xFE\xED\xFA\xCF",
res: true,
}, {
name: "MachO LE Magic64",
detector: MachO,
raw: "\xCF\xFA\xED\xFE",
res: true,
}}
for _, tt := range tCases {
t.Run(tt.name, func(t *testing.T) {
if got := tt.detector([]byte(tt.raw), tt.limit); got != tt.res {
t.Errorf("expected: %t; got: %t", tt.res, got)
}
// Empty inputs should not pass as anything.
if got := tt.detector(nil, 0); got != false {
t.Errorf("empty input: expected: %t; got: %t", false, got)
}
})
}
}
func TestScanLine(t *testing.T) {
tcases := []struct {
name string
input string
expected []string
}{{
name: "empty input",
input: "",
expected: nil,
}, {
name: "single line, no terminal nl",
input: "1",
expected: []string{"1"},
}, {
name: "single line, terminal nl",
input: "1\n",
expected: []string{"1"},
}, {
name: "two lines, no terminal nl",
input: "1\n2",
expected: []string{"1", "2"},
}, {
name: "two lines, with terminal nl",
input: "1\n2\n",
expected: []string{"1", "2"},
}, {
name: "drops final cr",
input: "1\n2\r",
expected: []string{"1", "2"},
}, {
name: "final empty line",
input: "1\n2\n\n",
expected: []string{"1", "2", ""},
}, {
name: "empty line with cr",
input: "1\n2\n\r",
expected: []string{"1", "2", ""},
}, {
name: "nd-json numbers and object",
input: "1\n2\n3\n{}",
expected: []string{"1", "2", "3", "{}"},
},
}
for _, tt := range tcases {
t.Run(tt.name, func(t *testing.T) {
testScanLine(t, tt.input, tt.expected)
testScanLineLikeBufioScanner(t, tt.input)
})
}
}
func testScanLine(t *testing.T, text string, expectedLines []string) {
var l []byte
i, raw := 0, []byte(text)
for i = 0; len(raw) != 0; i++ {
l, raw = scanLine(raw)
if string(l) != expectedLines[i] {
t.Errorf("expected %q, got %q", expectedLines[i], l)
}
}
if i != len(expectedLines) {
t.Errorf("expected %d lines, got %d lines", len(expectedLines), i)
}
}
// Test that scanLine behaves exactly like bufio.Scanner.
func testScanLineLikeBufioScanner(t *testing.T, text string) {
var l []byte
raw := []byte(text)
s := bufio.NewScanner(strings.NewReader(text))
for lineNum := 0; s.Scan(); lineNum++ {
l, raw = scanLine(raw)
if string(l) != s.Text() {
t.Errorf("expected: %q, got: %q", s.Text(), string(l))
}
}
if err := s.Err(); err != nil {
t.Error(err)
}
}
func TestDropLastLine(t *testing.T) {
dropTests := []struct {
raw string
cutAt uint32
res string
}{
{"", 0, ""},
{"", 1, ""},
{"å", 2, "å"},
{"\n", 0, "\n"},
{"\n", 1, "\n"},
{"\n\n", 1, "\n"},
{"\n\n", 3, "\n\n"},
{"a\n\n", 3, "a\n"},
{"\na\n", 3, "\na"},
{"å\n\n", 5, "å\n\n"},
{"\nå\n", 5, "\nå\n"},
}
for i, tt := range dropTests {
got := dropLastLine([]byte(tt.raw), tt.cutAt)
if got := string(got); got != tt.res {
t.Errorf("dropLastLine %d error: expected %q; got %q", i, tt.res, got)
}
}
}
func BenchmarkSrt(b *testing.B) {
const subtitle = `1
00:02:16,612 --> 00:02:19,376
Senator, we're making
our final approach into Coruscant.
`
for i := 0; i < b.N; i++ {
Srt([]byte(subtitle), 0)
}
}
|
