Fix some ast and parser tests

they should also pass semantic analysis

Author: mdbrnowski

tests/ast/input_3.txt

@@ -1,3 +1,3 @@
 a = 2 * (2 + 2) + 2 * 2;
 b = 3 * -3;
-C = 2 .+ 2 .* eye(3)';
+C = zeros(3, 3) .+ ones(3, 3) .* eye(3)';

tests/ast/output_3.txt

@@ -18,9 +18,13 @@
 =
 |  C
 |  .+
-|  |  2
+|  |  zeros
+|  |  |  3
+|  |  |  3
 |  |  .*
-|  |  |  2
+|  |  |  ones
+|  |  |  |  3
+|  |  |  |  3
 |  |  |  transpose
 |  |  |  |  eye
 |  |  |  |  |  3

tests/parser/input_1.txt

@@ -16,7 +16,7 @@ float_3 = .14;
 float_4 = 3.14e-2;
 string_1 = "#Hello!";
 
-H *= H';
+print H';
 
 a = 1;
 b = 2;