added tests

interpreter/tests/lox/operator/add.lox

@@ -0,0 +1,2 @@
+print 123 + 456; // expect: 579
+print "str" + "ing"; // expect: string

interpreter/tests/lox/operator/add_bool_nil.lox

@@ -0,0 +1 @@
+true + nil; // expect runtime error: Operands must be two numbers or two strings.

interpreter/tests/lox/operator/add_bool_num.lox

@@ -0,0 +1 @@
+true + 123; // expect runtime error: Operands must be two numbers or two strings.

interpreter/tests/lox/operator/add_bool_string.lox

@@ -0,0 +1 @@
+true + "s"; // expect runtime error: Operands must be two numbers or two strings.

interpreter/tests/lox/operator/add_nil_nil.lox

@@ -0,0 +1 @@
+nil + nil; // expect runtime error: Operands must be two numbers or two strings.

interpreter/tests/lox/operator/add_num_nil.lox

@@ -0,0 +1 @@
+1 + nil; // expect runtime error: Operands must be two numbers or two strings.

interpreter/tests/lox/operator/add_string_nil.lox

@@ -0,0 +1 @@
+"s" + nil; // expect runtime error: Operands must be two numbers or two strings.

interpreter/tests/lox/operator/comparison.lox

@@ -0,0 +1,25 @@
+print 1 < 2;    // expect: true
+print 2 < 2;    // expect: false
+print 2 < 1;    // expect: false
+
+print 1 <= 2;    // expect: true
+print 2 <= 2;    // expect: true
+print 2 <= 1;    // expect: false
+
+print 1 > 2;    // expect: false
+print 2 > 2;    // expect: false
+print 2 > 1;    // expect: true
+
+print 1 >= 2;    // expect: false
+print 2 >= 2;    // expect: true
+print 2 >= 1;    // expect: true
+
+// Zero and negative zero compare the same.
+print 0 < -0; // expect: false
+print -0 < 0; // expect: false
+print 0 > -0; // expect: false
+print -0 > 0; // expect: false
+print 0 <= -0; // expect: true
+print -0 <= 0; // expect: true
+print 0 >= -0; // expect: true
+print -0 >= 0; // expect: true

interpreter/tests/lox/operator/divide.lox

@@ -0,0 +1,2 @@
+print 8 / 2;         // expect: 4
+print 12.34 / 12.34;  // expect: 1

interpreter/tests/lox/operator/divide_nonnum_num.lox

@@ -0,0 +1 @@
+"1" / 1; // expect runtime error: Operands must be numbers.

interpreter/tests/lox/operator/divide_num_nonnum.lox

@@ -0,0 +1 @@
+1 / "1"; // expect runtime error: Operands must be numbers.

interpreter/tests/lox/operator/equals.lox

@@ -0,0 +1,14 @@
+print nil == nil; // expect: true
+
+print true == true; // expect: true
+print true == false; // expect: false
+
+print 1 == 1; // expect: true
+print 1 == 2; // expect: false
+
+print "str" == "str"; // expect: true
+print "str" == "ing"; // expect: false
+
+print nil == false; // expect: false
+print false == 0; // expect: false
+print 0 == "0"; // expect: false

interpreter/tests/lox/operator/equals_class.lox

@@ -0,0 +1,13 @@
+// Bound methods have identity equality.
+class Foo {}
+class Bar {}
+
+print Foo == Foo; // expect: true
+print Foo == Bar; // expect: false
+print Bar == Foo; // expect: false
+print Bar == Bar; // expect: true
+
+print Foo == "Foo"; // expect: false
+print Foo == nil;   // expect: false
+print Foo == 123;   // expect: false
+print Foo == true;  // expect: false

interpreter/tests/lox/operator/equals_method.lox

@@ -0,0 +1,13 @@
+// Bound methods have identity equality.
+class Foo {
+  method() {}
+}
+
+var foo = Foo();
+var fooMethod = foo.method;
+
+// Same bound method.
+print fooMethod == fooMethod; // expect: true
+
+// Different closurizations.
+print foo.method == foo.method; // expect: false

interpreter/tests/lox/operator/greater_nonnum_num.lox

@@ -0,0 +1 @@
+"1" > 1; // expect runtime error: Operands must be numbers.

interpreter/tests/lox/operator/greater_num_nonnum.lox

@@ -0,0 +1 @@
+1 > "1"; // expect runtime error: Operands must be numbers.

interpreter/tests/lox/operator/greater_or_equal_nonnum_num.lox

@@ -0,0 +1 @@
+"1" >= 1; // expect runtime error: Operands must be numbers.

interpreter/tests/lox/operator/greater_or_equal_num_nonnum.lox

@@ -0,0 +1 @@
+1 >= "1"; // expect runtime error: Operands must be numbers.

interpreter/tests/lox/operator/less_nonnum_num.lox

@@ -0,0 +1 @@
+"1" < 1; // expect runtime error: Operands must be numbers.

interpreter/tests/lox/operator/less_num_nonnum.lox

@@ -0,0 +1 @@
+1 < "1"; // expect runtime error: Operands must be numbers.

interpreter/tests/lox/operator/less_or_equal_nonnum_num.lox

@@ -0,0 +1 @@
+"1" <= 1; // expect runtime error: Operands must be numbers.

interpreter/tests/lox/operator/less_or_equal_num_nonnum.lox

@@ -0,0 +1 @@
+1 <= "1"; // expect runtime error: Operands must be numbers.

interpreter/tests/lox/operator/multiply.lox

@@ -0,0 +1,2 @@
+print 5 * 3; // expect: 15
+print 12.34 * 0.3; // expect: 3.702

interpreter/tests/lox/operator/multiply_nonnum_num.lox

@@ -0,0 +1 @@
+"1" * 1; // expect runtime error: Operands must be numbers.

interpreter/tests/lox/operator/multiply_num_nonnum.lox

@@ -0,0 +1 @@
+1 * "1"; // expect runtime error: Operands must be numbers.

interpreter/tests/lox/operator/negate.lox

@@ -0,0 +1,3 @@
+print -(3); // expect: -3
+print --(3); // expect: 3
+print ---(3); // expect: -3

interpreter/tests/lox/operator/negate_nonnum.lox

@@ -0,0 +1 @@
+-"s"; // expect runtime error: Operand must be a number.

interpreter/tests/lox/operator/not.lox

@@ -0,0 +1,13 @@
+print !true;     // expect: false
+print !false;    // expect: true
+print !!true;    // expect: true
+
+print !123;      // expect: false
+print !0;        // expect: false
+
+print !nil;     // expect: true
+
+print !"";       // expect: false
+
+fun foo() {}
+print !foo;      // expect: false

interpreter/tests/lox/operator/not_class.lox

@@ -0,0 +1,3 @@
+class Bar {}
+print !Bar;      // expect: false
+print !Bar();    // expect: false

interpreter/tests/lox/operator/not_equals.lox

@@ -0,0 +1,14 @@
+print nil != nil; // expect: false
+
+print true != true; // expect: false
+print true != false; // expect: true
+
+print 1 != 1; // expect: false
+print 1 != 2; // expect: true
+
+print "str" != "str"; // expect: false
+print "str" != "ing"; // expect: true
+
+print nil != false; // expect: true
+print false != 0; // expect: true
+print 0 != "0"; // expect: true

interpreter/tests/lox/operator/subtract.lox

@@ -0,0 +1,2 @@
+print 4 - 3; // expect: 1
+print 1.2 - 1.2; // expect: 0

interpreter/tests/lox/operator/subtract_nonnum_num.lox

@@ -0,0 +1 @@
+"1" - 1; // expect runtime error: Operands must be numbers.

interpreter/tests/lox/operator/subtract_num_nonnum.lox

@@ -0,0 +1 @@
+1 - "1"; // expect runtime error: Operands must be numbers.