change syntax to "lower..upper"

Author: jan-elastic

x-pack/plugin/esql/qa/testFixtures/src/main/java/org/elasticsearch/xpack/esql/CsvTestUtils.java

@@ -624,11 +624,12 @@ Object convert(String value) {
             if (value == null) {
                 return null;
             }
-            if (Number.class.isAssignableFrom(clazz) && value.startsWith("<") && value.endsWith(">") && value.contains(";")) {
-                // Numbers of the form "<lower;upper>" are parsed to a Range.
-                int separator = value.indexOf(';');
-                Object lowerBound = converter.apply(value.substring(1, separator).trim());
-                Object upperBound = converter.apply(value.substring(separator + 1, value.length() - 1).trim());
+            if (Number.class.isAssignableFrom(clazz) && value.contains("..")) {
+                // Numbers of the form "lower..upper" are parsed to a Range, indicating that
+                // the expected value is within that range.
+                int separator = value.indexOf("..");
+                Object lowerBound = converter.apply(value.substring(0, separator).trim());
+                Object upperBound = converter.apply(value.substring(separator + 2).trim());
                 return new Range(lowerBound, upperBound);
             } else {
                 return converter.apply(value);

x-pack/plugin/esql/qa/testFixtures/src/main/resources/sample.csv-spec

@@ -41,7 +41,7 @@ FROM employees
 ;
 
 count:long | avg_emp_no:double | sum_emp_no:long
-<10;90>    | <10010.0;10090.0> | <100100;908100>
+10..90     | 10010.0..10090.0  | 100100..908100
 ;
 
 
@@ -55,7 +55,7 @@ FROM employees
 ;
 
 count:long | avg_emp_no:double
-<2;48>     | <10055;10095>
+2..48      | 10055..10095
 ;
 
 
@@ -69,7 +69,7 @@ FROM employees
 ;
 
 count:long | avg_emp_no:double
-<2;48>     | <10005;10045>
+2..48      | 10005..10045
 ;
 
 
@@ -83,7 +83,7 @@ FROM employees
 ;
 
 count:long | avg_emp_no:double
-<10;90>    | <10010;10090>
+10..90     | 10010..10090
 ;
 
 
@@ -97,7 +97,7 @@ FROM employees
 ;
 
 count:long | avg_emp_no:double
-<10;90>    | <10010;10090>
+10..90     | 10010..10090
 ;
 
 
@@ -125,7 +125,7 @@ FROM employees
 ;
 
 count:long
-<2;48>
+2..48
 ;
 
 
@@ -173,7 +173,7 @@ FROM employees
 ;
 
 count:long | avg_emp_no:double
-<10;90>    | <10010;10090>
+10..90     | 10010..10090
 ;
 
 
@@ -188,7 +188,7 @@ FROM employees
 ;
 
 count:long | avg_avg_salary:double
-<1;16>     | <25000;75000>
+1..16      | 25000..75000
 ;