add tests to evaluator and lexer.

Author: DarioRoman01

README.md

@@ -72,7 +72,7 @@ mi_mapa["a"] // return 1
 var i = 0;
 mientras(i <= 5) {
     escribir("hola mundo");
-    i += 1;
+    i++
 }
 ```
 

tests/evaluator_test.go

@@ -327,6 +327,22 @@ func (e *EvaluatorTests) TestCallList() {
 	}
 }
 
+func (e *EvaluatorTests) TestOperators() {
+	tests := []tuple{
+		{"var a = 10; a++; a;", 11},
+		{"var a = 10; a+=1; a;", 11},
+		{"var a = 10; a--; a;", 9},
+		{"var a = 10; a-=1; a;", 9},
+		{"var a = 10; a/=2; a;", 5},
+		{"var a = 10; a*=2; a;", 20},
+	}
+
+	for _, test := range tests {
+		evaluated := e.evaluateTests(test.source)
+		e.testIntegerObject(evaluated, test.expected)
+	}
+}
+
 func (e *EvaluatorTests) TestBuiltinFunctions() {
 	tests := []struct {
 		source   string

tests/lexer_test.go

@@ -193,9 +193,15 @@ func (l *LexerTests) TestTwoCharacterOperator() {
 		10 <= 9;
 		10 || 9;
 		10 && 9;
+		10++;
+		10 += 1;
+		10--;
+		10 -= 1;
+		10 *= 2;
+		10 /= 2;
 	`
 
-	tokens := l.loadTokens(24, source)
+	tokens := l.loadTokens(46, source)
 
 	expectedTokens := []src.Token{
 		{Token_type: src.INT, Literal: "10"},
@@ -222,6 +228,28 @@ func (l *LexerTests) TestTwoCharacterOperator() {
 		{Token_type: src.AND, Literal: "&&"},
 		{Token_type: src.INT, Literal: "9"},
 		{Token_type: src.SEMICOLON, Literal: ";"},
+		{Token_type: src.INT, Literal: "10"},
+		{Token_type: src.PLUS2, Literal: "++"},
+		{Token_type: src.SEMICOLON, Literal: ";"},
+		{Token_type: src.INT, Literal: "10"},
+		{Token_type: src.PLUSASSING, Literal: "+="},
+		{Token_type: src.INT, Literal: "1"},
+		{Token_type: src.SEMICOLON, Literal: ";"},
+		{Token_type: src.INT, Literal: "10"},
+		{Token_type: src.MINUS2, Literal: "--"},
+		{Token_type: src.SEMICOLON, Literal: ";"},
+		{Token_type: src.INT, Literal: "10"},
+		{Token_type: src.MINUSASSING, Literal: "-="},
+		{Token_type: src.INT, Literal: "1"},
+		{Token_type: src.SEMICOLON, Literal: ";"},
+		{Token_type: src.INT, Literal: "10"},
+		{Token_type: src.TIMEASSI, Literal: "*="},
+		{Token_type: src.INT, Literal: "2"},
+		{Token_type: src.SEMICOLON, Literal: ";"},
+		{Token_type: src.INT, Literal: "10"},
+		{Token_type: src.DIVASSING, Literal: "/="},
+		{Token_type: src.INT, Literal: "2"},
+		{Token_type: src.SEMICOLON, Literal: ";"},
 	}
 
 	l.Assert().Equal(expectedTokens, tokens)