add tests for float to int cast

tests/error/comptime/float_to_int_cast1.bz

@@ -0,0 +1,8 @@
+// error: invalid cast in expression '-1.0 as uint8', floating-point value of type 'float64' is outside the representable range of integer type 'uint8'
+// error: invalid cast in expression '-1.0 as uint8', floating-point value of type 'float64' is outside the representable range of integer type 'uint8'
+// note: while evaluating expression at compile time
+// error: expression must be a constant expression
+function test()
+{
+	consteval _ = -1.0f64 as uint8;
+}

tests/error/comptime/float_to_int_cast2.bz

@@ -0,0 +1,8 @@
+// error: invalid cast in expression '-1.0 as uint8', floating-point value of type 'float32' is outside the representable range of integer type 'uint8'
+// error: invalid cast in expression '-1.0 as uint8', floating-point value of type 'float32' is outside the representable range of integer type 'uint8'
+// note: while evaluating expression at compile time
+// error: expression must be a constant expression
+function test()
+{
+	consteval _ = -1.0f32 as uint8;
+}

tests/error/comptime/float_to_int_cast3.bz

@@ -0,0 +1,10 @@
+// error: invalid cast in expression '-1.0 as uint8', floating-point value of type 'float64' is outside the representable range of integer type 'uint8'
+// note: while evaluating expression at compile time
+// error: failed to evaluate expression at compile time
+function test()
+{
+	(consteval {
+		let x = -1.0f64;
+		let _ = x as uint8;
+	});
+}

tests/error/comptime/float_to_int_cast4.bz

@@ -0,0 +1,10 @@
+// error: invalid cast in expression '-1.0 as uint8', floating-point value of type 'float32' is outside the representable range of integer type 'uint8'
+// note: while evaluating expression at compile time
+// error: failed to evaluate expression at compile time
+function test()
+{
+	(consteval {
+		let x = -1.0f32;
+		let _ = x as uint8;
+	});
+}

tests/error/comptime/float_to_int_cast5.bz

@@ -0,0 +1,10 @@
+// error: invalid cast in expression '256.0 as uint8', floating-point value of type 'float64' is outside the representable range of integer type 'uint8'
+// note: while evaluating expression at compile time
+// error: failed to evaluate expression at compile time
+function test()
+{
+	(consteval {
+		let x = 256.0f64;
+		let _ = x as uint8;
+	});
+}

tests/error/comptime/float_to_int_cast6.bz

@@ -0,0 +1,10 @@
+// error: invalid cast in expression '256.0 as uint8', floating-point value of type 'float32' is outside the representable range of integer type 'uint8'
+// note: while evaluating expression at compile time
+// error: failed to evaluate expression at compile time
+function test()
+{
+	(consteval {
+		let x = 256.0f32;
+		let _ = x as uint8;
+	});
+}