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|
package expr
import (
"bytes"
"testing"
"github.com/stretchr/testify/assert"
)
func TestParseBasic(t *testing.T) {
tests := []struct {
input string
output node
}{
{
"a + b * c",
binaryexpr{
binaryadd,
identnode{0, "a"},
binaryexpr{
binarymul,
identnode{4, "b"},
identnode{8, "c"},
},
},
},
{
"a * b + c",
binaryexpr{
binaryadd,
binaryexpr{
binarymul,
identnode{0, "a"},
identnode{4, "b"},
},
identnode{8, "c"},
},
},
{
"a * (b + c)",
binaryexpr{
binarymul,
identnode{0, "a"},
binaryexpr{
binaryadd,
identnode{5, "b"},
identnode{9, "c"},
},
},
},
{
"a ? b : c",
ternaryexpr{
identnode{0, "a"},
identnode{4, "b"},
identnode{8, "c"},
},
},
{
"a == 1 ? b + 1 : c * 1",
ternaryexpr{
binaryexpr{
binaryequal,
identnode{0, "a"},
intnode{5, 1, 1, false},
},
binaryexpr{
binaryadd,
identnode{9, "b"},
intnode{13, 1, 1, false},
},
binaryexpr{
binarymul,
identnode{17, "c"},
intnode{21, 1, 1, false},
},
},
},
{
"a(b, c)",
binaryexpr{
binarycall,
identnode{0, "a"},
binaryexpr{
binarygroup,
identnode{2, "b"},
identnode{5, "c"},
},
},
},
{
"a[1]",
binaryexpr{
binarysubscript,
identnode{0, "a"},
intnode{2, 1, 1, false},
},
},
}
for _, test := range tests {
p := newparser(newscanner(bytes.NewBufferString(test.input)))
assert.Equal(t, test.output, p.parse())
}
}
|
