add test for style test matcher

Author: lonvia

tests/bdd/command-line/test_style.feature

@@ -0,0 +1,68 @@
+Feature: Writing tests for lua styles
+    This feature exercises the different steps and matcher
+    of the osm2pgsql-test-style script.
+
+    Background:
+        Given the OSM data
+            """
+            n10 Tname=Afeat,access=yes x1 y4
+            n11 Tname=B-feat-Ö,access=no x34.5 y-1.5
+            """
+        And the style file 'flex-config/generic.lua'
+        When running osm2pgsql flex
+
+    Scenario: Fields can be matched case-insensitive
+        Then table points contains
+            | node_id | tags->'name'!i |
+            | 10      | AFEAT          |
+            | 11      | b-feat-ö       |
+        And table points doesn't contain
+            | node_id | tags->'name' |
+            | 10      | AFEAT        |
+
+
+    Scenario: Fields can be match with a regular expression
+        Then table points contains
+            | node_id | tags!re |
+            | 10      | .*access.*   |
+            | 11      | .*-[a-z]+-.* |
+
+
+    Scenario: Fields can be matched as a substring
+        Then table points contains
+            | node_id | tags->'name'!substr |
+            | 10      | feat                |
+            | 11      | feat                |
+        And table points doesn't contain
+            | node_id | tags->'name' |
+            | 10      | ?            |
+
+
+    Scenario: Fields can be matched as a json expression
+        Then table points contains
+            | node_id | tags!json |
+            | 10      | {"name": "Afeat", "access": "yes"} |
+        Then table points contains
+            | node_id | tags!json |
+            | 10      | {"access": "yes", "name": "Afeat"} |
+
+
+    Scenario: Floating fields can be matched with different precision
+        Then table points contains
+            | node_id | ST_X(geom)!~0.5 |
+            | 11      | 3840522.0 |
+        Then table points doesn't contain
+            | node_id | ST_X(geom)!~0.1 |
+            | 11      | 3840522.0 |
+        Then table points contains
+            | node_id | ST_X(geom)!~1% |
+            | 11      | 3840000.0 |
+        Then table points doesn't contain
+            | node_id | ST_X(geom)!~0.01% |
+            | 11      | 3840000.0 |
+
+
+    Scenario: Fields can be formatted arbitrarily for comparison
+        Then table points contains
+            | node_id!:03d | ST_X(geom)!:.1f |
+            | 010          | 111319.5             |