Add tests for disassembler

hera/disassembler.py

@@ -143,9 +143,9 @@ def disassemble(data: bytes) -> AbstractOperation:
             return op.BNVR(r)
     elif hi4 == 0b0010 and midhi4 >> 1 == 0b000:
         if midhi4 & 1:
-            return op.CALL(R(midlo4), R(lo4))
-        else:
             return op.RETURN(R(midlo4), R(lo4))
+        else:
+            return op.CALL(R(midlo4), R(lo4))
     elif hi == 0b00100010 and midlo4 == 0b0000:
         return op.SWI(UINT(lo4))
     elif hi == 0b00100011 and lo == 0:

test/test_disassembler.py

@@ -0,0 +1,116 @@
+from hera.main import main
+
+
+def test_disassemble_set_inc(capsys):
+    main(["disassemble", "test/assets/asm/set_inc.hera.lcode"])
+
+    captured = capsys.readouterr()
+    assert captured.err == ""
+    assert (
+        captured.out
+        == """\
+SETLO(R1, 255)
+SETHI(R3, 42)
+INC(R10, 1)
+DEC(R1, 20)
+"""
+    )
+
+
+def test_disassemble_binary_op(capsys):
+    main(["disassemble", "test/assets/asm/binary_op.hera.lcode"])
+
+    captured = capsys.readouterr()
+    assert captured.err == ""
+    assert (
+        captured.out
+        == """\
+AND(R1, R7, R12)
+OR(R0, R4, R2)
+ADD(R3, R5, R8)
+SUB(R9, R13, R15)
+MUL(R1, R2, R3)
+XOR(R8, R7, R4)
+"""
+    )
+
+
+def test_disassemble_branch(capsys):
+    main(["disassemble", "test/assets/asm/branch.hera.lcode"])
+
+    captured = capsys.readouterr()
+    assert captured.err == ""
+    assert (
+        captured.out
+        == """\
+BR(R1)
+BL(R1)
+BGE(R1)
+BLE(R1)
+BG(R1)
+BULE(R1)
+BUG(R1)
+BZ(R1)
+BNZ(R1)
+BC(R1)
+BNC(R1)
+BS(R1)
+BNS(R1)
+BV(R1)
+BNV(R1)
+CALL(R12, R11)
+RETURN(R12, R13)
+"""
+    )
+
+
+def test_disassemble_flag(capsys):
+    main(["disassemble", "test/assets/asm/flag.hera.lcode"])
+
+    captured = capsys.readouterr()
+    assert captured.err == ""
+    assert (
+        captured.out
+        == """\
+SAVEF(R5)
+RSTRF(R5)
+FON(4)
+FOFF(5)
+FSET5(3)
+FSET4(2)
+"""
+    )
+
+
+def test_disassemble_shift(capsys):
+    main(["disassemble", "test/assets/asm/shift.hera.lcode"])
+
+    captured = capsys.readouterr()
+    assert captured.err == ""
+    assert (
+        captured.out
+        == """\
+LSL(R3, R4)
+LSR(R5, R6)
+LSL8(R7, R8)
+LSR8(R8, R9)
+ASL(R1, R2)
+ASR(R2, R3)
+"""
+    )
+
+
+def test_disassemble_misc(capsys):
+    main(["disassemble", "test/assets/asm/misc.hera.lcode"])
+
+    captured = capsys.readouterr()
+    assert captured.err == ""
+    assert (
+        captured.out
+        == """\
+LOAD(R1, 10, R14)
+STORE(R2, 0, R14)
+SWI(10)
+RTI()
+"""
+    )