Fixed and added a lot of tests

[Mograsim.git] / net.mograsim.logic.ui.am2900 / test / net / mograsim / logic / ui / am2900 / TestUtil.java

diff --git a/net.mograsim.logic.ui.am2900/test/net/mograsim/logic/ui/am2900/TestUtil.java b/net.mograsim.logic.ui.am2900/test/net/mograsim/logic/ui/am2900/TestUtil.java
index 08c7982..937e566 100644 (file)
--- a/net.mograsim.logic.ui.am2900/test/net/mograsim/logic/ui/am2900/TestUtil.java
+++ b/net.mograsim.logic.ui.am2900/test/net/mograsim/logic/ui/am2900/TestUtil.java
@@ -9,6 +9,8 @@ public final class TestUtil
 
        /**
         * Transforms the last four bits of an int to a string that contains the binary ('1' and '0') representation of the 4 bits
+        * 
+        * @author Christian Femers
         */
        public static String to4bitBin(int x)
        {
@@ -19,4 +21,64 @@ public final class TestUtil
                sb.append((x & 0b0001) == 0 ? '0' : '1');
                return sb.toString();
        }
+
+       /**
+        * Transforms the given boolean to a string that contains the binary ('1' and '0') representation of the bit
+        * 
+        * @author Christian Femers
+        */
+       public static String to1bitBin(boolean bitIsSet)
+       {
+               return bitIsSet ? "1" : "0";
+       }
+
+       /**
+        * Transforms the given int to a string that contains the binary ('1' and '0') representation of the int. "0" is only returned when the
+        * int is equal to zero.
+        * 
+        * @author Christian Femers
+        */
+       public static String to1bitBin(int someInt)
+       {
+               return someInt != 0 ? "1" : "0";
+       }
+
+       /**
+        * Transforms a 4 bit signed integer (-8 to 7) to a int representing the same number. (Adding leading 1-bits if the 4 bit int is
+        * negative)
+        * 
+        * @author Christian Femers
+        */
+       public static int signed4ToSigned32(int signed4bit)
+       {
+               if ((signed4bit & 0b1000) > 0)
+                       return signed4bit | 0xFF_FF_FF_F0;
+               return signed4bit & 0x00_00_00_0F;
+       }
+
+       /**
+        * Transforms a 16 bit signed integer (-32768 to 32767 - a short) to a int representing the same number. (Adding leading 1-bits if the
+        * 16 bit int is negative)
+        * 
+        * @author Christian Femers
+        */
+       public static int signed16ToSigned32(int signed16bit)
+       {
+               return (short) signed16bit;
+       }
+
+       /**
+        * Transforms the last n bits of an int to a string that contains the binary ('1' and '0') representation of the n bits
+        * 
+        * @author Christian Femers
+        */
+       public static String toNbitString(int x, int n)
+       {
+               StringBuilder sb = new StringBuilder(n);
+               for (int i = 0; i < n; i++)
+               {
+                       sb.append((x >> i) & 1);
+               }
+               return sb.reverse().toString();
+       }
 }