Format IN clauses and add tests

Break long IN/NOT IN value lists into multi-line, indented form when generating SQL scripts by adding InPredicateCollector and updating FormattedScriptGenerator to replace single-line value lists. Add tests CommandInClause and CommandNotInClause plus their verified outputs. Update readme snippet anchors to match new source line ranges.

Author: SimonCropp

readme.md

@@ -65,7 +65,7 @@ await Verify(connection)
     // include only tables and views
     .SchemaIncludes(DbObjects.Tables | DbObjects.Views);
 ```
-<sup><a href='/src/Tests/Tests.cs#L423-L429' title='Snippet source file'>snippet source</a> | <a href='#snippet-SchemaInclude' title='Start of snippet'>anchor</a></sup>
+<sup><a href='/src/Tests/Tests.cs#L443-L449' title='Snippet source file'>snippet source</a> | <a href='#snippet-SchemaInclude' title='Start of snippet'>anchor</a></sup>
 <!-- endSnippet -->
 
 Available values:
@@ -103,7 +103,7 @@ await Verify(connection)
         _ => _ is TableViewBase ||
              _.Name == "MyTrigger");
 ```
-<sup><a href='/src/Tests/Tests.cs#L448-L456' title='Snippet source file'>snippet source</a> | <a href='#snippet-SchemaFilter' title='Start of snippet'>anchor</a></sup>
+<sup><a href='/src/Tests/Tests.cs#L468-L476' title='Snippet source file'>snippet source</a> | <a href='#snippet-SchemaFilter' title='Start of snippet'>anchor</a></sup>
 <!-- endSnippet -->
 
 
@@ -125,7 +125,7 @@ command.CommandText = "select Value from MyTable";
 var value = await command.ExecuteScalarAsync();
 await Verify(value!);
 ```
-<sup><a href='/src/Tests/Tests.cs#L232-L242' title='Snippet source file'>snippet source</a> | <a href='#snippet-Recording' title='Start of snippet'>anchor</a></sup>
+<sup><a href='/src/Tests/Tests.cs#L252-L262' title='Snippet source file'>snippet source</a> | <a href='#snippet-Recording' title='Start of snippet'>anchor</a></sup>
 <!-- endSnippet -->
 
 Will result in the following verified file:
@@ -180,7 +180,7 @@ await Verify(
         sqlEntries = entries
     });
 ```
-<sup><a href='/src/Tests/Tests.cs#L309-L339' title='Snippet source file'>snippet source</a> | <a href='#snippet-RecordingSpecific' title='Start of snippet'>anchor</a></sup>
+<sup><a href='/src/Tests/Tests.cs#L329-L359' title='Snippet source file'>snippet source</a> | <a href='#snippet-RecordingSpecific' title='Start of snippet'>anchor</a></sup>
 <!-- endSnippet -->
 
 
@@ -208,7 +208,7 @@ var sqlErrorsViaType = entries
     .Select(_ => _.Data)
     .OfType<ErrorEntry>();
 ```
-<sup><a href='/src/Tests/Tests.cs#L365-L384' title='Snippet source file'>snippet source</a> | <a href='#snippet-RecordingReadingResults' title='Start of snippet'>anchor</a></sup>
+<sup><a href='/src/Tests/Tests.cs#L385-L404' title='Snippet source file'>snippet source</a> | <a href='#snippet-RecordingReadingResults' title='Start of snippet'>anchor</a></sup>
 <!-- endSnippet -->
 
 

src/Tests/Tests.CommandInClause.verified.txt

@@ -0,0 +1,11 @@
+{
+  Text:
+select Id,
+       Name
+from   MyTable
+where  Id in (1,
+              2,
+              4,
+              6),
+  HasTransaction: false
+}

src/Tests/Tests.CommandNotInClause.verified.txt

@@ -0,0 +1,10 @@
+{
+  Text:
+select Id,
+       Name
+from   MyTable
+where  Id not in (1,
+                  2,
+                  4),
+  HasTransaction: false
+}

src/Tests/Tests.cs

@@ -194,6 +194,26 @@ public async Task CommandOrderByMultipleColumnsDesc()
         await Verify(command);
     }
 
+    [Test]
+    public async Task CommandInClause()
+    {
+        var command = new SqlCommand
+        {
+            CommandText = "select Id, Name from MyTable where Id in (1, 2, 4, 6)"
+        };
+        await Verify(command);
+    }
+
+    [Test]
+    public async Task CommandNotInClause()
+    {
+        var command = new SqlCommand
+        {
+            CommandText = "select Id, Name from MyTable where Id not in (1, 2, 4)"
+        };
+        await Verify(command);
+    }
+
     [Test]
     public async Task Exception()
     {

src/Verify.SqlServer/FormattedScriptGenerator.cs

@@ -50,6 +50,43 @@ public string GenerateScript(TSqlFragment fragment)
 #endif
         }
 
+        var inCollector = new InPredicateCollector();
+        fragment.Accept(inCollector);
+
+        foreach (var inPredicate in inCollector.Predicates)
+        {
+            if (inPredicate.Values.Count <= 1)
+            {
+                continue;
+            }
+
+            var values = new List<string>(inPredicate.Values.Count);
+            foreach (var value in inPredicate.Values)
+            {
+                generator.GenerateScript(value, out var text);
+                values.Add(text);
+            }
+
+            var singleLine = string.Join(", ", values);
+
+            var pos = script.IndexOf(singleLine, StringComparison.Ordinal);
+            if (pos == -1)
+            {
+                continue;
+            }
+
+            var lineStart = script.LastIndexOf('\n', pos) + 1;
+            var indent = new string(' ', pos - lineStart);
+
+#if NET48
+            var multiLine = string.Join(",\n" + indent, values);
+            script = script.Substring(0, pos) + multiLine + script.Substring(pos + singleLine.Length);
+#else
+            var multiLine = string.Join(",\n" + indent, values);
+            script = string.Concat(script.AsSpan(0, pos), multiLine, script.AsSpan(pos + singleLine.Length));
+#endif
+        }
+
         return script;
     }
 }

src/Verify.SqlServer/InPredicateCollector.cs

@@ -0,0 +1,7 @@
+class InPredicateCollector : TSqlFragmentVisitor
+{
+    public List<InPredicate> Predicates { get; } = [];
+
+    public override void Visit(InPredicate node) =>
+        Predicates.Add(node);
+}