func TestParserAssignment(t *testing.T) {
type TestCase struct {
inString string
inVars map[string]string
want int64
wantVars map[string]string
}
cases := []TestCase{
{
"x=2",
map[string]string{},
2,
map[string]string{"x": "2"},
},
{
"x+=2",
map[string]string{},
2,
map[string]string{"x": "2"},
},
{
"x+=2",
map[string]string{"x": "2"},
4,
map[string]string{"x": "4"},
},
{
"x*=4",
map[string]string{"x": "2"},
8,
map[string]string{"x": "8"},
},
{
"0 ? x += 2 : x += 2",
map[string]string{},
2,
map[string]string{"x": "2"},
},
}
for _, c := range cases {
scp := variables.NewScope()
for k, v := range c.inVars {
scp.Set(k, v)
}
got, err := A.Parse(c.inString, scp)
if err != nil {
t.Errorf("Parse returned an error: %s", err.Error())
}
if got != c.want {
t.Errorf("Variable assignment '%s' should evaluate to '%d'", c.inString, c.want)
}
for varName, wantVar := range c.wantVars {
gotVar := scp.Get(varName)
if gotVar.Val != wantVar {
t.Errorf("Variable assignment should modify global scope. '%s' should be '%s' not '%s'", varName, wantVar, gotVar.Val)
}
}
}
}
func main() {
if len(os.Args) < 2 {
fmt.Println("Please pass a file to run")
os.Exit(1)
}
fileContents, err := ioutil.ReadFile(os.Args[1]) // Ignore error
if err != nil {
fmt.Println(err.Error())
}
p := NewParser(string(fileContents))
scp := variables.NewScope()
scp.SetPositionalArgs(os.Args[1:])
ex := T.ExitSuccess
stdIO := &T.IOContainer{In: os.Stdin, Out: os.Stdout, Err: os.Stderr}
for {
n := p.Parse()
if n == nil {
//Newline
continue
}
if _, isEOF := n.(NodeEOF); isEOF {
os.Exit(int(ex))
}
ex = n.Eval(scp, stdIO)
}
}
package arith_test
import (
"testing"
A "github.com/danwakefield/gosh/arith"
"github.com/danwakefield/gosh/variables"
)
var EmptyScope = variables.NewScope()
func TestParserBinops(t *testing.T) {
type TestCase struct {
in string
want int64
}
cases := []TestCase{
{"5 <= 4", A.ShellFalse},
{"4 <= 4", A.ShellTrue},
{"3 <= 4", A.ShellTrue},
{"3 >= 4", A.ShellFalse},
{"4 >= 4", A.ShellTrue},
{"5 >= 4", A.ShellTrue},
{"5 < 4", A.ShellFalse},
{"3 < 4", A.ShellTrue},
{"3 > 4", A.ShellFalse},
{"5 > 4", A.ShellTrue},
{"5 == 4", A.ShellFalse},
{"4 == 4", A.ShellTrue},
{"4 != 4", A.ShellFalse},
{"5 != 4", A.ShellTrue},