403 lines
7.3 KiB
Go
403 lines
7.3 KiB
Go
package compiler_test
|
|
|
|
import (
|
|
"bytes"
|
|
"fmt"
|
|
"math/big"
|
|
"strings"
|
|
"testing"
|
|
|
|
"github.com/nspcc-dev/neo-go/pkg/compiler"
|
|
"github.com/nspcc-dev/neo-go/pkg/vm"
|
|
"github.com/stretchr/testify/require"
|
|
)
|
|
|
|
var binaryExprTestCases = []testCase{
|
|
{
|
|
"simple add",
|
|
`func F%d() int {
|
|
x := 2 + 2
|
|
return x
|
|
}
|
|
`,
|
|
big.NewInt(4),
|
|
},
|
|
{
|
|
"simple sub",
|
|
`func F%d() int {
|
|
x := 2 - 2
|
|
return x
|
|
}
|
|
`,
|
|
big.NewInt(0),
|
|
},
|
|
{
|
|
"simple div",
|
|
`func F%d() int {
|
|
x := 2 / 2
|
|
return x
|
|
}
|
|
`,
|
|
big.NewInt(1),
|
|
},
|
|
{
|
|
"simple mod",
|
|
`func F%d() int {
|
|
x := 3 %% 2
|
|
return x
|
|
}
|
|
`,
|
|
big.NewInt(1),
|
|
},
|
|
{
|
|
"simple mul",
|
|
`func F%d() int {
|
|
x := 4 * 2
|
|
return x
|
|
}
|
|
`,
|
|
big.NewInt(8),
|
|
},
|
|
{
|
|
"simple binary expr in return",
|
|
`func F%d() int {
|
|
x := 2
|
|
return 2 + x
|
|
}
|
|
`,
|
|
big.NewInt(4),
|
|
},
|
|
{
|
|
"complex binary expr",
|
|
`func F%d() int {
|
|
x := 4
|
|
y := 8
|
|
z := x + 2 + 2 - 8
|
|
return y * z
|
|
}
|
|
`,
|
|
big.NewInt(0),
|
|
},
|
|
{
|
|
"compare not equal strings with eql",
|
|
`func F%d() int {
|
|
str := "a string"
|
|
if str == "another string" {
|
|
return 1
|
|
}
|
|
return 0
|
|
}
|
|
`,
|
|
big.NewInt(0),
|
|
},
|
|
{
|
|
"compare equal strings with eql",
|
|
`func F%d() int {
|
|
str := "a string"
|
|
if str == "a string" {
|
|
return 1
|
|
}
|
|
return 0
|
|
}
|
|
`,
|
|
big.NewInt(1),
|
|
},
|
|
{
|
|
"compare not equal strings with neq",
|
|
`func F%d() int {
|
|
str := "a string"
|
|
if str != "another string" {
|
|
return 1
|
|
}
|
|
return 0
|
|
}
|
|
`,
|
|
big.NewInt(1),
|
|
},
|
|
{
|
|
"compare equal strings with neq",
|
|
`func F%d() int {
|
|
str := "a string"
|
|
if str != "a string" {
|
|
return 1
|
|
}
|
|
return 0
|
|
}
|
|
`,
|
|
big.NewInt(0),
|
|
},
|
|
{
|
|
"compare equal ints with eql",
|
|
`func F%d() int {
|
|
x := 10
|
|
if x == 10 {
|
|
return 1
|
|
}
|
|
return 0
|
|
}
|
|
`,
|
|
big.NewInt(1),
|
|
},
|
|
{
|
|
"compare equal ints with neq",
|
|
`func F%d() int {
|
|
x := 10
|
|
if x != 10 {
|
|
return 1
|
|
}
|
|
return 0
|
|
}
|
|
`,
|
|
big.NewInt(0),
|
|
},
|
|
{
|
|
"compare not equal ints with eql",
|
|
`func F%d() int {
|
|
x := 11
|
|
if x == 10 {
|
|
return 1
|
|
}
|
|
return 0
|
|
}
|
|
`,
|
|
big.NewInt(0),
|
|
},
|
|
{
|
|
"compare not equal ints with neq",
|
|
`func F%d() int {
|
|
x := 11
|
|
if x != 10 {
|
|
return 1
|
|
}
|
|
return 0
|
|
}
|
|
`,
|
|
big.NewInt(1),
|
|
},
|
|
{
|
|
"simple add and assign",
|
|
`func F%d() int {
|
|
x := 2
|
|
x += 1
|
|
return x
|
|
}
|
|
`,
|
|
big.NewInt(3),
|
|
},
|
|
{
|
|
"simple sub and assign",
|
|
`func F%d() int {
|
|
x := 2
|
|
x -= 1
|
|
return x
|
|
}
|
|
`,
|
|
big.NewInt(1),
|
|
},
|
|
{
|
|
"simple mul and assign",
|
|
`func F%d() int {
|
|
x := 2
|
|
x *= 2
|
|
return x
|
|
}
|
|
`,
|
|
big.NewInt(4),
|
|
},
|
|
{
|
|
"simple div and assign",
|
|
`func F%d() int {
|
|
x := 2
|
|
x /= 2
|
|
return x
|
|
}
|
|
`,
|
|
big.NewInt(1),
|
|
},
|
|
{
|
|
"simple mod and assign",
|
|
`func F%d() int {
|
|
x := 5
|
|
x %%= 2
|
|
return x
|
|
}
|
|
`,
|
|
big.NewInt(1),
|
|
},
|
|
}
|
|
|
|
func TestBinaryExprs(t *testing.T) {
|
|
srcBuilder := bytes.NewBuffer([]byte("package testcase\n"))
|
|
for i, tc := range binaryExprTestCases {
|
|
srcBuilder.WriteString(fmt.Sprintf(tc.src, i))
|
|
}
|
|
|
|
ne, di, err := compiler.CompileWithOptions("file.go", strings.NewReader(srcBuilder.String()), nil)
|
|
require.NoError(t, err)
|
|
|
|
for i, tc := range binaryExprTestCases {
|
|
v := vm.New()
|
|
t.Run(tc.name, func(t *testing.T) {
|
|
v.Istack().Clear()
|
|
v.Estack().Clear()
|
|
invokeMethod(t, fmt.Sprintf("F%d", i), ne.Script, v, di)
|
|
runAndCheck(t, v, tc.result)
|
|
})
|
|
}
|
|
}
|
|
|
|
func addBoolExprTestFunc(testCases []testCase, b *bytes.Buffer, val bool, cond string) []testCase {
|
|
n := len(testCases)
|
|
b.WriteString(fmt.Sprintf(`
|
|
func F%d_expr() int {
|
|
var cond%d = %s
|
|
if cond%d { return 42 }
|
|
return 17
|
|
}
|
|
func F%d_cond() int {
|
|
if %s { return 42 }
|
|
return 17
|
|
}
|
|
func F%d_else() int {
|
|
if %s { return 42 } else { return 17 }
|
|
}
|
|
`, n, n, cond, n, n, cond, n, cond))
|
|
|
|
res := big.NewInt(42)
|
|
if !val {
|
|
res.SetInt64(17)
|
|
}
|
|
|
|
return append(testCases, testCase{
|
|
name: cond,
|
|
result: res,
|
|
})
|
|
}
|
|
|
|
func runBooleanCases(t *testing.T, testCases []testCase, src string) {
|
|
ne, di, err := compiler.CompileWithOptions("file.go", strings.NewReader(src), nil)
|
|
require.NoError(t, err)
|
|
|
|
for i, tc := range testCases {
|
|
t.Run(tc.name, func(t *testing.T) {
|
|
t.Run("AsExpression", func(t *testing.T) {
|
|
v := vm.New()
|
|
invokeMethod(t, fmt.Sprintf("F%d_expr", i), ne.Script, v, di)
|
|
runAndCheck(t, v, tc.result)
|
|
})
|
|
t.Run("InCondition", func(t *testing.T) {
|
|
v := vm.New()
|
|
invokeMethod(t, fmt.Sprintf("F%d_cond", i), ne.Script, v, di)
|
|
runAndCheck(t, v, tc.result)
|
|
})
|
|
t.Run("InConditionWithElse", func(t *testing.T) {
|
|
v := vm.New()
|
|
invokeMethod(t, fmt.Sprintf("F%d_else", i), ne.Script, v, di)
|
|
runAndCheck(t, v, tc.result)
|
|
})
|
|
})
|
|
}
|
|
}
|
|
|
|
// TestBooleanExprs enumerates a lot of possible combinations of boolean expressions
|
|
// and tests if the result matches to that of Go.
|
|
func TestBooleanExprs(t *testing.T) {
|
|
header := `package foo
|
|
var s = "str"
|
|
var v = 9
|
|
`
|
|
|
|
srcBuilder := bytes.NewBuffer([]byte(header))
|
|
|
|
var testCases []testCase
|
|
|
|
trueExpr := []string{"true", "v < 10", "v <= 9", "v > 8", "v >= 9", "v == 9", "v != 8", `s == "str"`}
|
|
falseExpr := []string{"false", "v > 9", "v >= 10", "v < 9", "v <= 8", "v == 8", "v != 9", `s == "a"`}
|
|
t.Run("Single", func(t *testing.T) {
|
|
for _, s := range trueExpr {
|
|
testCases = addBoolExprTestFunc(testCases, srcBuilder, true, s)
|
|
}
|
|
for _, s := range falseExpr {
|
|
testCases = addBoolExprTestFunc(testCases, srcBuilder, false, s)
|
|
}
|
|
runBooleanCases(t, testCases, srcBuilder.String())
|
|
})
|
|
|
|
type arg struct {
|
|
val bool
|
|
s string
|
|
}
|
|
|
|
var double []arg
|
|
for _, e := range trueExpr {
|
|
double = append(double, arg{true, e + " || false"})
|
|
double = append(double, arg{true, e + " && true"})
|
|
}
|
|
for _, e := range falseExpr {
|
|
double = append(double, arg{false, e + " && true"})
|
|
double = append(double, arg{false, e + " || false"})
|
|
}
|
|
|
|
t.Run("Double", func(t *testing.T) {
|
|
testCases = testCases[:0]
|
|
srcBuilder.Reset()
|
|
srcBuilder.WriteString(header)
|
|
for i := range double {
|
|
testCases = addBoolExprTestFunc(testCases, srcBuilder, double[i].val, double[i].s)
|
|
}
|
|
runBooleanCases(t, testCases, srcBuilder.String())
|
|
})
|
|
|
|
var triple []arg
|
|
for _, a1 := range double {
|
|
for _, a2 := range double {
|
|
triple = append(triple, arg{a1.val || a2.val, fmt.Sprintf("(%s) || (%s)", a1.s, a2.s)})
|
|
triple = append(triple, arg{a1.val && a2.val, fmt.Sprintf("(%s) && (%s)", a1.s, a2.s)})
|
|
}
|
|
}
|
|
|
|
t.Run("Triple", func(t *testing.T) {
|
|
const step = 350 // empirically found value to make script less than 65536 in size
|
|
for start := 0; start < len(triple); start += step {
|
|
testCases = testCases[:0]
|
|
srcBuilder.Reset()
|
|
srcBuilder.WriteString(header)
|
|
for i := start; i < start+step && i < len(triple); i++ {
|
|
testCases = addBoolExprTestFunc(testCases, srcBuilder, triple[i].val, triple[i].s)
|
|
}
|
|
runBooleanCases(t, testCases, srcBuilder.String())
|
|
}
|
|
})
|
|
}
|
|
|
|
func TestShortCircuit(t *testing.T) {
|
|
srcTmpl := `package foo
|
|
var a = 1
|
|
func inc() bool { a += 1; return %s }
|
|
func Main() int {
|
|
if %s {
|
|
return 41 + a
|
|
}
|
|
return 16 + a
|
|
}`
|
|
t.Run("||", func(t *testing.T) {
|
|
src := fmt.Sprintf(srcTmpl, "true", "a == 1 || inc()")
|
|
eval(t, src, big.NewInt(42))
|
|
})
|
|
t.Run("&&", func(t *testing.T) {
|
|
src := fmt.Sprintf(srcTmpl, "false", "a == 2 && inc()")
|
|
eval(t, src, big.NewInt(17))
|
|
})
|
|
}
|
|
|
|
func TestEmitBoolean(t *testing.T) {
|
|
src := `package foo
|
|
func Main() int {
|
|
a := true
|
|
if (a == true) == true {
|
|
return 42
|
|
}
|
|
return 11
|
|
}`
|
|
eval(t, src, big.NewInt(42))
|
|
}
|