Added tests for input/output and radix commands(i/I,o/O,k/K)

tests/test_fix

@@ -0,0 +1,19 @@
+#!/bin/sh
+
+utest() {
+    PROGRAM="$PWD/build/dc"
+    EXPECTED="3.14159"
+    ACTUAL=$("$PROGRAM" -e '5 k pi p')
+    assert_eq "$EXPECTED" "$ACTUAL"
+
+    # Test default precision
+    EXPECTED="0"
+    ACTUAL=$("$PROGRAM" -e 'K p')
+    assert_eq "$EXPECTED" "$ACTUAL"
+
+    # Test invalid precision
+    EXPECTED="Precision must be a non-negative number"
+    ACTUAL=$("$PROGRAM" -e '-1 k' 2>&1) || true
+    assert_eq "$EXPECTED" "$ACTUAL"
+}
+# vim: ts=4 sw=4 softtabstop=4 expandtab:

tests/test_irdx

@@ -0,0 +1,21 @@
+#!/bin/sh
+
+utest() {
+    PROGRAM="$PWD/build/dc"
+
+    # Test default input base
+    EXPECTED="10"
+    ACTUAL=$("$PROGRAM" -e 'I p')
+    assert_eq "$EXPECTED" "$ACTUAL"
+
+    # Test new, valid input base
+    EXPECTED="10"
+    ACTUAL=$("$PROGRAM" -e '2 i 1010 p')
+    assert_eq "$EXPECTED" "$ACTUAL"
+
+    # Test new, invalid input base
+    EXPECTED="Input base must be a number within the range 2-16(inclusive)"
+    ACTUAL=$("$PROGRAM" -e '1 i' 2>&1) || true
+    assert_eq "$EXPECTED" "$ACTUAL"
+}
+# vim: ts=4 sw=4 softtabstop=4 expandtab:

tests/test_ordx

@@ -0,0 +1,21 @@
+#!/bin/sh
+
+utest() {
+    PROGRAM="$PWD/build/dc"
+
+    # Test default output base
+    EXPECTED="10"
+    ACTUAL=$("$PROGRAM" -e 'O p')
+    assert_eq "$EXPECTED" "$ACTUAL"
+
+    # Test new, valid output base
+    EXPECTED="Fh"
+    ACTUAL=$("$PROGRAM" -e '16 o 15 p')
+    assert_eq "$EXPECTED" "$ACTUAL"
+
+    # Test new, invalid output base
+    EXPECTED="'o' accepts either BIN, OCT, DEC or HEX bases"
+    ACTUAL=$("$PROGRAM" -e '9 o' 2>&1) || true
+    assert_eq "$EXPECTED" "$ACTUAL"
+}
+# vim: ts=4 sw=4 softtabstop=4 expandtab: