func TestConvertDir(t *testing.T) {
bFile := `package bar
`
dFile := `package c
`
root := path.Join("foo", "bar")
files := map[string]*testutil.FakeFile{
path.Join(root, "a"): &testutil.FakeFile{Buffer: *bytes.NewBufferString("a")},
path.Join(root, "b"+fExt): &testutil.FakeFile{Buffer: *bytes.NewBufferString(bFile)},
path.Join(root, "b"+fExt+goExt): &testutil.FakeFile{},
path.Join(root, "c", "d"+fExt): &testutil.FakeFile{Buffer: *bytes.NewBufferString(dFile)},
path.Join(root, "c", "d"+fExt+goExt): &testutil.FakeFile{},
}
infos := map[string][]os.FileInfo{
root: []os.FileInfo{
&FileInfo{name: "a", size: 1},
&FileInfo{name: "b" + fExt, size: int64(len(bFile))},
&FileInfo{name: "c", isDir: true},
},
path.Join(root, "c"): []os.FileInfo{
&FileInfo{name: "d" + fExt, size: int64(len(dFile))},
},
}
readDir := func(s string) ([]os.FileInfo, error) { return infos[s], nil }
open := func(s string) (io.ReadWriteCloser, error) { return files[s], nil }
create := func(s string) (io.ReadWriteCloser, error) { return files[s], nil }
err := convertDir(root, readDir, open, create)
defect.Equal(t, err, nil)
defect.Equal(t, files[path.Join(root, "b"+fExt+goExt)].String(), header+bFile)
defect.Equal(t, files[path.Join(root, "c", "d"+fExt+goExt)].String(), header+dFile)
}
func TestLexer_Token(t *testing.T) {
l := Lexer{Lexer: util.Lexer{
Reader: util.NewReader(`123 + 456
2 - 78
4569
a = 1 + 2 * (3 / 4 - b)`),
IsWhitespace: util.IsWhitespaceST,
}}
for _, expected := range []struct {
Token Token
Kind int
}{
{"123", NUM}, {"+", '+'}, {"456", NUM}, {"\n", '\n'},
{"2", NUM}, {"-", '-'}, {"78", NUM}, {"\n", '\n'},
{"4569", NUM}, {"\n", '\n'},
{"a", VAR}, {"=", '='}, {"1", NUM}, {"+", '+'}, {"2", NUM},
{"*", '*'}, {"(", '('}, {"3", NUM}, {"/", '/'},
{"4", NUM}, {"-", '-'}, {"b", VAR}, {")", ')'},
} {
token, kind, err := l.Token()
defect.Equal(t, err, nil)
defect.Equal(t, kind, expected.Kind)
defect.Equal(t, token, expected.Token)
}
}
func TestIsWhitespaceSTNL(t *testing.T) {
l := Lexer{
Reader: NewReader("1 2\t3\n4"),
IsWhitespace: IsWhitespaceSTNL,
}
for _, expected := range []rune{'1', '2', '3', '4', EOF} {
r, err := l.Scan()
defect.Equal(t, err, nil)
defect.Equal(t, r, expected)
}
}
func TestLexer_Scan(t *testing.T) {
l := Lexer{
Reader: NewReader("1 + 2"),
IsWhitespace: IsWhitespaceST,
}
for _, expected := range []rune{'1', '+', '2', EOF} {
r, err := l.Scan()
defect.Equal(t, err, nil)
defect.Equal(t, r, expected)
}
}
func TestLexer_Token(t *testing.T) {
l := Lexer{Lexer: util.Lexer{
Reader: util.NewReader(`123 + 456
2 - 78
4569
0
15 == 16
a != 3
3 >= 4
5 <= 6
7 > 8
9 < 10
a = 1 + 2 * (3 / 4 - b)
wwhilew
iiff`),
IsWhitespace: util.IsWhitespaceSTNL,
}}
for _, expected := range []struct {
Token Token
Kind int
}{
{"123", NUM}, {"+", '+'}, {"456", NUM},
{"2", NUM}, {"-", '-'}, {"78", NUM},
{"4569", NUM},
{"0", NUM},
{"15", NUM}, {"==", EQ}, {"16", NUM},
{"a", VAR}, {"!=", NEQ}, {"3", NUM},
{"3", NUM}, {">=", GTEQ}, {"4", NUM},
{"5", NUM}, {"<=", LTEQ}, {"6", NUM},
{"7", NUM}, {">", '>'}, {"8", NUM},
{"9", NUM}, {"<", '<'}, {"10", NUM},
{"a", VAR}, {"=", '='}, {"1", NUM}, {"+", '+'}, {"2", NUM},
{"*", '*'}, {"(", '('}, {"3", NUM}, {"/", '/'},
{"4", NUM}, {"-", '-'}, {"b", VAR}, {")", ')'},
{"w", VAR}, {"while", WHILE}, {"w", VAR},
{"i", VAR}, {"if", IF}, {"f", VAR},
} {
token, kind, err := l.Token()
defect.Equal(t, err, nil)
defect.Equal(t, kind, expected.Kind)
defect.Equal(t, token, expected.Token)
}
// errors
l = Lexer{Lexer: util.Lexer{
Reader: util.NewReader("01\n"),
IsWhitespace: util.IsWhitespaceSTNL,
}}
_, _, err := l.Token()
defect.Equal(t, err, IllegalInteger)
}
func TestParseDancer(t *testing.T) {
dancer := &Dancer{}
err := dancer.Parse([]string{})
defect.Equal(t, err, ErrWrongNumFields)
err = dancer.Parse([]string{"12132", "Cohen", "Miles"})
defect.Equal(t, err, nil)
defect.Equal(t, *dancer, Dancer{
Number: 12132,
First: "Miles",
Last: "Cohen",
})
}
func TestConvert(t *testing.T) {
fn := func(buffSize int, s string) {
out := strings.NewReader(s)
in := &bytes.Buffer{}
err := convert(out, in, buffSize)
defect.Equal(t, err, nil)
defect.Equal(t, string(in.Bytes()), header+s)
}
fn(4, "foo") // 1 pass
fn(3, "baz") // exact
fn(2, "bar") // 2 passes
}
func TestReadRune(t *testing.T) {
r := NewReader("foo")
fn := func(expected rune) {
rn, err := readRune(r)
defect.Equal(t, err, nil)
defect.Equal(t, rn, expected)
}
fn('f')
fn('o')
fn('o')
fn(EOF)
}
func TestParseCompetition(t *testing.T) {
comp := &Competition{}
err := comp.Parse([]string{})
defect.Equal(t, err, ErrWrongNumFields)
err = comp.Parse([]string{"56", "Easter Swing", "Bellevue, WA", "Apr 2015"})
defect.Equal(t, err, nil)
defect.Equal(t, *comp, Competition{
Number: 56,
Name: "Easter Swing",
Location: "Bellevue, WA",
Date: time.Date(2015, 4, 1, 0, 0, 0, 0, time.UTC),
})
}
func TestLexer_Scan(t *testing.T) {
l := Lexer{Lexer: util.Lexer{
Reader: util.NewReader("a = 1 + 2 * (3 / 4 - b)"),
IsWhitespace: util.IsWhitespaceSTNL,
}}
for _, expected := range []rune{
'a', '=', '1', '+', '2', '*', '(',
'3', '/', '4', '-', 'b', ')', util.EOF,
} {
r, err := l.Scan()
defect.Equal(t, err, nil)
defect.Equal(t, r, expected)
}
}
func TestScanner_Scan(t *testing.T) {
s := Scanner{}
expected := map[string][]token.Token{
`package main
`: {token.PACKAGE, token.IDENT, token.SEMICOLON},
`package main
import "fmt"
func main(){
fmt.Println("hello world")
}
`: {token.PACKAGE, token.IDENT, token.SEMICOLON,
token.IMPORT, token.STRING, token.SEMICOLON,
token.FUNC, token.IDENT, token.LPAREN, token.RPAREN, token.LBRACE,
token.IDENT, token.PERIOD, token.IDENT, token.LPAREN, token.STRING, token.RPAREN, token.SEMICOLON,
token.RBRACE, token.SEMICOLON},
}
for text, symbols := range expected {
s.Init([]byte(text))
i := 0
_, tok, _ := s.Scan()
for tok != token.EOF {
defect.Equal(t, tok, symbols[i])
_, tok, _ = s.Scan()
i++
}
}
}
func TestLexer(t *testing.T) {
l := Lexer{Lexer: util.Lexer{Reader: util.NewReader("12")}}
fn := func(get func() (rune, error), expected rune) {
r, err := get()
defect.Equal(t, err, nil)
defect.Equal(t, r, expected)
}
fn(l.Peek, '1')
fn(l.Peek, '1')
fn(l.Next, '1')
fn(l.Peek, '2')
fn(l.Next, '2')
fn(l.Peek, util.EOF)
fn(l.Next, util.EOF)
}
func TestIsFenec(t *testing.T) {
tests := map[string]bool{
"foo": false,
"foo" + goExt: false,
"foo" + fExt: true,
"foo" + fExt + goExt: false,
}
for k, v := range tests {
defect.Equal(t, IsFenec(k), v)
}
}
func TestLexer_Token(t *testing.T) {
l := Lexer{Lexer: util.Lexer{
Reader: util.NewReader(`123 + 456
2 - 78
4569`),
IsWhitespace: util.IsWhitespaceST,
}}
for _, expected := range []struct {
Token Token
Kind int
}{
{"123", NUM}, {"+", '+'}, {"456", NUM}, {"\n", '\n'},
{"2", NUM}, {"-", '-'}, {"78", NUM}, {"\n", '\n'},
{"4569", NUM},
} {
token, kind, err := l.Token()
defect.Equal(t, err, nil)
defect.Equal(t, kind, expected.Kind)
defect.Equal(t, token, expected.Token)
}
}
func TestEmptyGenerics_literals(t *testing.T) {
src := []string{
"struct{}{}", // empty struct
"struct[]{}{}", // empty generic struct
"func(){}", // empty function
"func[](){}", // empty generic function
}
for _, s := range src {
_, err := ParseExpr(s)
defect.Equal(t, err, nil)
}
}
func TestLexer_PeekAndScan(t *testing.T) {
fn := func(get func() (rune, error), expected rune) {
r, err := get()
defect.Equal(t, err, nil)
defect.Equal(t, r, expected)
}
// empty
l := Lexer{Reader: NewReader("")}
fn(l.Peek, EOF)
fn(l.Next, EOF)
// basic
l = Lexer{Reader: NewReader("12")}
fn(l.Peek, '1')
fn(l.Peek, '1')
fn(l.Next, '1')
fn(l.Peek, '2')
fn(l.Next, '2')
fn(l.Peek, EOF)
fn(l.Next, EOF)
}
func TestScanner_Peek(t *testing.T) {
s := Scanner{}
s.Init([]byte(`package main
func main(){}
`))
expected := []token.Token{
token.PACKAGE, token.IDENT, token.SEMICOLON,
token.FUNC, token.IDENT, token.LPAREN, token.RPAREN, token.LBRACE, token.RBRACE, token.SEMICOLON,
}
for _, e := range expected {
_, tok, _ := s.Peek()
defect.Equal(t, tok, e)
s.Scan()
}
}
func TestInDir(t *testing.T) {
readDir := func(string) ([]os.FileInfo, error) {
return []os.FileInfo{
&FileInfo{name: "foo" + goExt, size: 12, isDir: false},
&FileInfo{name: "bar" + fExt, size: int64(len(basicFile)), isDir: false},
&FileInfo{name: "baz", size: 0, isDir: true},
&FileInfo{name: "quux" + fExt, size: 0, isDir: true},
}, nil
}
p := path.Join("foo", "bar", "baz")
files, dirs, err := inDir(p, readDir)
defect.Equal(t, err, nil)
defect.DeepEqual(t, files, []string{path.Join(p, "bar"+fExt)})
defect.DeepEqual(t, dirs, []string{
path.Join(p, "baz"),
path.Join(p, "quux"+fExt),
})
}
func TestYyParse(t *testing.T) {
fn := func(s string, expected []int) {
Output.Mtx.Lock()
Output.Val = []int{}
p := yyParse(&Lexer{Lexer: util.Lexer{
Reader: util.NewReader(s),
IsWhitespace: util.IsWhitespaceST,
}})
defect.Equal(t, p, util.EOF)
defect.DeepEqual(t, Output.Val, expected)
Output.Mtx.Unlock()
}
fn("6\n", []int{6})
fn("67 + 89\n", []int{67 + 89})
fn("2 * 3\n", []int{6})
fn("6 / 2\n", []int{3})
fn("(4)\n", []int{4})
fn("1 + 3 * (4 / 2 - 5)\n", []int{-8})
fn("a = 1\n", []int{})
fn(`a = 1
a
`, []int{1})
fn(`123 + 456
2 - 78
4569
`, []int{123 + 456, 2 - 78, 4569})
fn("1 + 3 * (4 / 2 - 5)\n", []int{-8})
fn(`a = 1 + 3 * (4 / 2 - 5)
b = a + 10
b
`, []int{2})
// examples from the book
fn(`3 * (4 + 5)
x = 3 * (4 + 5)
y = 5
x
y
x + 2 * y
`, []int{27, 27, 5, 37})
}
func TestV1Parse(t *testing.T) {
fn := func(s string, expected []int) {
Output.Mtx.Lock()
Output.Val = []int{}
p := yyParse(&Lexer{Lexer: util.Lexer{
Reader: util.NewReader(s),
IsWhitespace: util.IsWhitespaceST,
}})
defect.Equal(t, p, util.EOF)
defect.DeepEqual(t, Output.Val, expected)
Output.Mtx.Unlock()
}
fn("6\n", []int{6})
fn("67 + 89\n", []int{67 + 89})
fn(`123 + 456
2 - 78
4569
`, []int{123 + 456, 2 - 78, 4569})
}
func TestParseResult(t *testing.T) {
result := &Result{}
err := result.Parse([]string{})
defect.Equal(t, err, ErrWrongNumFields)
err = result.Parse([]string{"12132", "56", "f", "All-Stars", "F", "1"})
defect.Equal(t, err, nil)
defect.Equal(t, *result, Result{
Dancer: 12132,
Competition: 56,
Lead: false,
Category: "All-Stars",
Result: 0,
Points: 1,
})
err = result.Parse([]string{"12132", "56", "l", "Novice", "0", "1"})
defect.Equal(t, err, nil)
defect.Equal(t, *result, Result{
Dancer: 12132,
Competition: 56,
Lead: true,
Category: "Novice",
Result: 0,
Points: 1,
})
err = result.Parse([]string{"12132", "56", "f", "Invitational", "1", "10"})
defect.Equal(t, err, nil)
defect.Equal(t, *result, Result{
Dancer: 12132,
Competition: 56,
Lead: false,
Category: "Invitational",
Result: 1,
Points: 10,
})
}
func TestConvertFile(t *testing.T) {
name := "/foo/bar/baz" + fExt
of := testutil.FakeFile{}
o := func(s string) (io.ReadWriteCloser, error) {
of.Path = s
of.WriteString(basicFile)
return &of, nil
}
cf := testutil.FakeFile{}
c := func(s string) (io.ReadWriteCloser, error) {
cf.Path = s
return &cf, nil
}
err := convertFile(name, o, c)
defect.Equal(t, err, nil)
defect.Equal(t, cf.String(), header+basicFile)
defect.Equal(t, of.Closed, true)
defect.Equal(t, cf.Closed, true)
defect.Equal(t, of.Path, name)
defect.Equal(t, cf.Path, name+goExt)
}
func TestYyParse(t *testing.T) {
fn := func(s string, expected []interface{}) {
Mtx.Lock()
Initialize()
p := yyParse(&Lexer{Lexer: util.Lexer{
Reader: util.NewReader(s),
IsWhitespace: util.IsWhitespaceSTNL,
}})
defect.Equal(t, p, util.EOF)
defect.DeepEqual(t, vals(Output), expected)
Mtx.Unlock()
}
fn("print 6;", []interface{}{6})
fn("print 67 + 89;", []interface{}{67 + 89})
fn("print 2 * 3;", []interface{}{6})
fn("print 6 / 2;", []interface{}{3})
fn("print (4);", []interface{}{4})
fn("print 1 + 3 * (4 / 2 - 5);", []interface{}{-8})
fn("print -2;", []interface{}{-2})
fn("a = 1;", []interface{}{})
fn(`a = 1;
print a;
`, []interface{}{1})
fn(`print 123 + 456;
print 2 - 78;
print 4569;
`, []interface{}{123 + 456, 2 - 78, 4569})
fn("print 1 + 3 * (4 / 2 - 5);", []interface{}{-8})
fn(`a = 1 + 3 * (4 / 2 - 5);
b = a + 10;
print b;
`, []interface{}{2})
fn("print 1 == 1;", []interface{}{true})
fn("print (1 == 1) == (2 == 3);", []interface{}{false})
fn("print 2 < 1;", []interface{}{false})
fn("print 2 > 1;", []interface{}{true})
fn("print 3 >= 3;", []interface{}{true})
fn("print 4 <= 3;", []interface{}{false})
fn("print 2 != 2;", []interface{}{false})
fn("print (1 != 1) != (1 != 2);", []interface{}{true})
fn("{print 1; print 2;}", []interface{}{1, 2})
fn("{{{print 1;}}}", []interface{}{1})
fn("a = 1; { a = 2; {{ a = 3; a = 4; } a = 5; }} print a;",
[]interface{}{5})
fn("{a = 1; print a;}", []interface{}{1})
fn("if (1 == 1) {print 1;}", []interface{}{1})
fn("if (1 == 2) {print 1;}", []interface{}{})
fn("a = 1; if (a == 1) { print 1; }", []interface{}{1})
fn("a = 1 == 1; if (a) { print 1; }", []interface{}{1})
fn("{a = 1; if (a == 1) { print 1; }}", []interface{}{1})
fn("a = 1; while (a < 3) { print a; a = a + 1; }", []interface{}{1, 2})
fn("if (1 == 2) print 1; else print 2;", []interface{}{2})
fn("a = 1; if (a == 2) print 1; else print 2;", []interface{}{2})
fn(`a = 1; if (a == 2) {
a = a + 1;
print a;
} else {
a = a + 1;
if (a == 2) print a == 2; else print a == 2;
}`, []interface{}{true})
fn(`a = 1; while (a < 4) {
while (a < 4) {
print a;
a = a + 1;
}
}`, []interface{}{1, 2, 3})
// examples from the book
fn(`print 3 * (4 + 5);
x = 3 * (4 + 5);
y = 5;
print x;
print y;
print x + 2 * y;
`, []interface{}{27, 27, 5, 37})
}
func ParseTestFile(t *testing.T, s string) *ast.File {
fset := token.NewFileSet()
file, err := ParseFile(fset, "", s, AllErrors)
defect.Equal(t, err, nil)
return file
}