streamline arm test names and get guard to pick up right tests

test/arm/test_call.rb

@@ -0,0 +1,26 @@
+require_relative 'helper'
+
+class TestControl < MiniTest::Test
+  include ArmHelper
+
+  def test_b
+    # the address is what an assembler calculates (a signed number for the amount of instructions),
+    # ie the relative (to pc) address -8 (pipeline) /4 so save space
+    # so the cpu adds the value*4 and starts loading that (load, decode, execute)
+    code = @machine.b(	-4 ) #this jumps to the next instruction
+    assert_code code , :b , [0xff,0xff,0xff,0xea] #ea ff ff fe
+  end
+  def test_call #see comment above. bx not implemented (as it means into thumb, and no thumb here)
+    code = @machine.call(	-4 ,{} )#this jumps to the next instruction
+    assert_code code , :call, [0xff,0xff,0xff,0xeb] #ea ff ff fe
+  end
+  def test_swi
+    code = @machine.swi( 0x05 )
+    assert_code code , :swi , [0x05,0x00,0x00,0xef]#ef 00 00 05
+  end
+  def test_swi_neg
+    assert_raises(RuntimeError) do
+      assert_code @machine.swi("0x05") , :swi , [0x05,0x00,0x00,0xef]
+    end
+  end
+end