int() bool() and str()

evaluator/evaluator_test.go

@@ -411,12 +411,36 @@ func TestBuiltinFunctions(t *testing.T) {
 		{`input()`, ""},
 		{`pop([])`, errors.New("cannot pop from an empty array")},
 		{`pop([1])`, 1},
+		{`bool(1)`, true},
+		{`bool(0)`, false},
+		{`bool(true)`, true},
+		{`bool(false)`, false},
+		{`bool(null)`, false},
+		{`bool("")`, false},
+		{`bool("foo")`, true},
+		{`bool([])`, false},
+		{`bool([1, 2, 3])`, true},
+		{`bool({})`, false},
+		{`bool({"a": 1})`, true},
+		{`int(true)`, 1},
+		{`int(false)`, 0},
+		{`int(1)`, 1},
+		{`int("10")`, 10},
+		{`str(null)`, "null"},
+		{`str(true)`, "true"},
+		{`str(false)`, "false"},
+		{`str(10)`, "10"},
+		{`str("foo")`, "foo"},
+		{`str([1, 2, 3])`, "[1, 2, 3]"},
+		{`str({"a": 1})`, "{\"a\": 1}"},
 	}
 
 	for _, tt := range tests {
 		evaluated := testEval(tt.input)
 
 		switch expected := tt.expected.(type) {
+		case bool:
+			testBooleanObject(t, evaluated, expected)
 		case int:
 			testIntegerObject(t, evaluated, int64(expected))
 		case string: