tests/py: Support testing JSON input and output as well

This extends nft-test.py by optional JSON testing capabilities,
activated via '-j'/'--enable-json' parameter).

JSON testing happens for all rules which are supposed to work: After a
rule has been added and the existing tests (payload, ruleset listing
output) have been performed, basically the same test is done again using
a recorded JSON equivalent and (if necessary) a recorded listing output.

The code tries to ease new test case creation overhead by
auto-generating JSON equivalent input via listing the (non-JSON) rule in
JSON format. Also, differing netlink debug and listing output are stored
in *.got files to assist in analyzing/fixing failing test cases.

Signed-off-by: Phil Sutter <phil@nwl.cc>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>

1 files changed, 316 insertions, 0 deletions

diff --git a/tests/py/inet/comp.t.json b/tests/py/inet/comp.t.json
new file mode 100644
index 00000000..d76d6ed8
--- /dev/null
+++ b/tests/py/inet/comp.t.json
@@ -0,0 +1,316 @@
+# comp nexthdr != esp
+[
+    {
+        "match": {
+            "left": {
+                "payload": {
+                    "field": "nexthdr",
+                    "name": "comp"
+                }
+            },
+            "op": "!=",
+            "right": "esp"
+        }
+    }
+]
+
+# comp flags 0x0
+[
+    {
+        "match": {
+            "left": {
+                "payload": {
+                    "field": "flags",
+                    "name": "comp"
+                }
+            },
+            "right": "0x0"
+        }
+    }
+]
+
+# comp flags != 0x23
+[
+    {
+        "match": {
+            "left": {
+                "payload": {
+                    "field": "flags",
+                    "name": "comp"
+                }
+            },
+            "op": "!=",
+            "right": "0x23"
+        }
+    }
+]
+
+# comp flags 0x33-0x45
+[
+    {
+        "match": {
+            "left": {
+                "payload": {
+                    "field": "flags",
+                    "name": "comp"
+                }
+            },
+            "right": {
+                "range": [ "0x33", "0x45" ]
+            }
+        }
+    }
+]
+
+# comp flags != 0x33-0x45
+[
+    {
+        "match": {
+            "left": {
+                "payload": {
+                    "field": "flags",
+                    "name": "comp"
+                }
+            },
+            "op": "!=",
+            "right": {
+                "range": [ "0x33", "0x45" ]
+            }
+        }
+    }
+]
+
+# comp flags {0x33, 0x55, 0x67, 0x88}
+[
+    {
+        "match": {
+            "left": {
+                "payload": {
+                    "field": "flags",
+                    "name": "comp"
+                }
+            },
+            "right": {
+                "set": [
+                    "0x33",
+                    "0x55",
+                    "0x67",
+                    "0x88"
+                ]
+            }
+        }
+    }
+]
+
+# comp flags != {0x33, 0x55, 0x67, 0x88}
+[
+    {
+        "match": {
+            "left": {
+                "payload": {
+                    "field": "flags",
+                    "name": "comp"
+                }
+            },
+            "op": "!=",
+            "right": {
+                "set": [
+                    "0x33",
+                    "0x55",
+                    "0x67",
+                    "0x88"
+                ]
+            }
+        }
+    }
+]
+
+# comp flags { 0x33-0x55}
+[
+    {
+        "match": {
+            "left": {
+                "payload": {
+                    "field": "flags",
+                    "name": "comp"
+                }
+            },
+            "right": {
+                "set": [
+                    { "range": [ "0x33", "0x55" ] }
+                ]
+            }
+        }
+    }
+]
+
+# comp flags != { 0x33-0x55}
+[
+    {
+        "match": {
+            "left": {
+                "payload": {
+                    "field": "flags",
+                    "name": "comp"
+                }
+            },
+            "op": "!=",
+            "right": {
+                "set": [
+                    { "range": [ "0x33", "0x55" ] }
+                ]
+            }
+        }
+    }
+]
+
+# comp cpi 22
+[
+    {
+        "match": {
+            "left": {
+                "payload": {
+                    "field": "cpi",
+                    "name": "comp"
+                }
+            },
+            "right": 22
+        }
+    }
+]
+
+# comp cpi != 233
+[
+    {
+        "match": {
+            "left": {
+                "payload": {
+                    "field": "cpi",
+                    "name": "comp"
+                }
+            },
+            "op": "!=",
+            "right": 233
+        }
+    }
+]
+
+# comp cpi 33-45
+[
+    {
+        "match": {
+            "left": {
+                "payload": {
+                    "field": "cpi",
+                    "name": "comp"
+                }
+            },
+            "right": {
+                "range": [ 33, 45 ]
+            }
+        }
+    }
+]
+
+# comp cpi != 33-45
+[
+    {
+        "match": {
+            "left": {
+                "payload": {
+                    "field": "cpi",
+                    "name": "comp"
+                }
+            },
+            "op": "!=",
+            "right": {
+                "range": [ 33, 45 ]
+            }
+        }
+    }
+]
+
+# comp cpi {33, 55, 67, 88}
+[
+    {
+        "match": {
+            "left": {
+                "payload": {
+                    "field": "cpi",
+                    "name": "comp"
+                }
+            },
+            "right": {
+                "set": [
+                    33,
+                    55,
+                    67,
+                    88
+                ]
+            }
+        }
+    }
+]
+
+# comp cpi != {33, 55, 67, 88}
+[
+    {
+        "match": {
+            "left": {
+                "payload": {
+                    "field": "cpi",
+                    "name": "comp"
+                }
+            },
+            "op": "!=",
+            "right": {
+                "set": [
+                    33,
+                    55,
+                    67,
+                    88
+                ]
+            }
+        }
+    }
+]
+
+# comp cpi { 33-55}
+[
+    {
+        "match": {
+            "left": {
+                "payload": {
+                    "field": "cpi",
+                    "name": "comp"
+                }
+            },
+            "right": {
+                "set": [
+                    { "range": [ 33, 55 ] }
+                ]
+            }
+        }
+    }
+]
+
+# comp cpi != { 33-55}
+[
+    {
+        "match": {
+            "left": {
+                "payload": {
+                    "field": "cpi",
+                    "name": "comp"
+                }
+            },
+            "op": "!=",
+            "right": {
+                "set": [
+                    { "range": [ 33, 55 ] }
+                ]
+            }
+        }
+    }
+]
+