more tests and cases

Author: g31pranjal

fdb-relational-core/src/main/java/com/apple/foundationdb/relational/recordlayer/query/SemanticAnalyzer.java

@@ -743,7 +743,7 @@ public static void validateLimit(@Nonnull Expression expression) {
     }
 
     public static void validateDatabaseUri(@Nonnull Identifier path) {
-        Assert.thatUnchecked(Objects.requireNonNull(path.getName()).matches("/\\w[a-zA-Z0-9_/]*\\w"),
+        Assert.thatUnchecked(Objects.requireNonNull(path.getName()).startsWith("/"),
                 ErrorCode.INVALID_PATH, () -> String.format(Locale.ROOT, "invalid database path '%s'", path));
     }
 

yaml-tests/src/test/resources/valid-identifiers.yamsql

@@ -249,4 +249,24 @@ test_block:
     -
       - query: DELETE FROM "foo.tableA" WHERE "foo.tableA.A2" = 100
       - count: 2
+---
+setup:
+  connect: "jdbc:embed:/__SYS?schema=CATALOG"
+  steps:
+    - query: drop schema template if exists "टेम्पलेट"
+    - query: create schema template "टेम्पलेट" create table T1(a1 bigint, primary key(a1))
+---
+test_block:
+  connect: "jdbc:embed:/__SYS?schema=CATALOG"
+  tests:
+    -
+      - query: select count(*) from "TEMPLATES" where template_name = 'टेम्पलेट'
+      - result: [{1}]
+# This does not work entirely, but theoretically should be possible!
+#---
+#setup:
+#  connect: "jdbc:embed:/__SYS?schema=CATALOG"
+#  steps:
+#    - query: drop database if exists "/frl/डेटाबेस"
+#    - query: create database "/frl/डेटाबेस"
 ...