增加 util_test case

Author: dengsgo

engine/util_test.go

@@ -17,8 +17,8 @@ func TestParseAndExecSimple(t *testing.T) {
 		{"-(1+2)*5/3", -5},
 		{"1+(-(1+2)*5/3)", -4},
 		{"3^4", 81},
-		{"3^4.5", 81},
-		{"3.5^4.5", 150.0625},
+		{"3^4.5", 140.29611541307906},
+		{"3.5^4.5", 280.7412308013823},
 		{"8%2", 0},
 		{"8%3", 2},
 		{"8%3.5", 2},
@@ -60,6 +60,10 @@ func TestParseAndExecSimple(t *testing.T) {
 		{"noerr(1/(1-1))", 0},
 		{"0.1+0.2", 0.3},
 		{"0.3-0.1", 0.2},
+		{"10^-1", 0.1},
+		{"10^-2", 0.01},
+		{"10^-1*100", 10},
+		{"10%0", 0},
 	}
 	for _, e := range exprs {
 		r, _ := ParseAndExec(e.Expr)