test: nasm-t -- Add ifelse

Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>

travis/test/ifelse.asm

@@ -0,0 +1,46 @@
+;Testname=ifelse; Arguments=-fbin -oifelse.bin; Files=stdout stderr ifelse.bin
+
+;No problems -> db 3
+%if 0
+ db 0
+%elif 0 > 0
+ db 1
+%elif 1 < 1
+ db 2
+%else
+ db 3
+%endif
+
+;Garbage after else, elif after else -> db 5
+%if 0
+  db 4
+%else trailing garbage
+  db 5
+%elif 1
+  db 6
+%endif
+
+;Garbage after endif ->
+%if 0
+  db 7
+%endif trailing garbage
+
+;else after else -> db 9
+%if 0
+  db 8
+%else
+  db 9
+%else
+  db 10
+%endif
+
+;Problem preprocessed out, no warning ->
+%if 0
+  %if 1
+    db 11
+  %else
+    db 12
+  %else
+    db 13
+  %endif
+%endif

travis/test/ifelse.bin.t

@@ -0,0 +1 @@
+	

travis/test/ifelse.json

@@ -0,0 +1,12 @@
+[
+	{
+		"description": "Test if,elif,else directives",
+		"id": "ifelse",
+		"format": "bin",
+		"source": "ifelse.asm",
+		"target": [
+			{ "output": "ifelse.bin" },
+			{ "stderr": "ifelse.stderr" }
+		]
+	}
+]

travis/test/ifelse.stderr

@@ -0,0 +1,4 @@
+./travis/test/ifelse.asm:17: warning: trailing garbage after `%else' ignored
+./travis/test/ifelse.asm:19: warning: `%elif' after `%else' ignored
+./travis/test/ifelse.asm:26: warning: trailing garbage after `%endif' ignored
+./travis/test/ifelse.asm:33: warning: `%else' after `%else' ignored.