check if results are expected to be empty (pointfreeco#65)

* check if results are expected to be empty

test example

fixes

fix

* clean up

* wip

---------

Co-authored-by: Brandon Williams <[email protected]>

Author: natemann

Sources/StructuredQueriesTestSupport/AssertQuery.swift

@@ -97,6 +97,22 @@ public func assertQuery<each V: QueryRepresentable, S: Statement<(repeat each V)
         line: line,
         column: column
       )
+    } else if results != nil {
+      assertInlineSnapshot(
+        of: table,
+        as: .lines,
+        message: "Results expected to be empty",
+        syntaxDescriptor: InlineSnapshotSyntaxDescriptor(
+          trailingClosureLabel: "results",
+          trailingClosureOffset: snapshotTrailingClosureOffset + 1
+        ),
+        matches: results,
+        fileID: fileID,
+        file: filePath,
+        function: function,
+        line: line,
+        column: column
+      )
     }
   } catch {
     assertInlineSnapshot(

Tests/StructuredQueriesTests/InsertTests.swift

@@ -500,15 +500,6 @@ extension SnapshotTests {
         DO NOTHING
         RETURNING "reminderID", "tagID"
         """
-      } results: {
-        """
-        ┌──────────────────┐
-        │ ReminderTag(     │
-        │   reminderID: 1, │
-        │   tagID: 1       │
-        │ )                │
-        └──────────────────┘
-        """
       }
     }
 

Tests/StructuredQueriesTests/WhereTests.swift

@@ -42,6 +42,24 @@ extension SnapshotTests {
       }
     }
 
+    @Test(.snapshots(record: .never)) func emptyResults() {
+      withKnownIssue("This assert should fail") {
+        assertQuery(
+          Reminder.where { $0.isCompleted && !$0.isCompleted }
+        ) {
+        """
+        SELECT "reminders"."id", "reminders"."assignedUserID", "reminders"."dueDate", "reminders"."isCompleted", "reminders"."isFlagged", "reminders"."notes", "reminders"."priority", "reminders"."remindersListID", "reminders"."title"
+        FROM "reminders"
+        WHERE ("reminders"."isCompleted") AND ("reminders"."isFlagged")
+        """
+        } results: {
+          """
+          Results
+          """
+        }
+      }
+    }
+
     @Test func or() {
       assertQuery(
         Reminder.where(\.isCompleted).or(Reminder.where(\.isFlagged))