enable/update some example tests so they work again (#10058)

# Description

This PR updates some `Example` tests so that they work again. The only
one I couldn't figure out is the one in the `filter` command. It should
work but does not. However, I left the test in because it's valuable, it
just has a `None` result. I'd like to fix this but I'm not sure how.

# User-Facing Changes
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# Tests + Formatting
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crates/nu-command/src/date/to_record.rs

@@ -81,6 +81,34 @@ impl Command for SubCommand {
             Some(Value::Record { cols, vals, span })
         };
 
+        let example_result_2 = || {
+            let span = Span::test_data();
+            let cols = vec![
+                "year".into(),
+                "month".into(),
+                "day".into(),
+                "hour".into(),
+                "minute".into(),
+                "second".into(),
+                "nanosecond".into(),
+                "timezone".into(),
+            ];
+            let vals = vec![
+                Value::Int { val: 2020, span },
+                Value::Int { val: 4, span },
+                Value::Int { val: 12, span },
+                Value::Int { val: 22, span },
+                Value::Int { val: 10, span },
+                Value::Int { val: 57, span },
+                Value::Int { val: 0, span },
+                Value::String {
+                    val: "+02:00".to_string(),
+                    span,
+                },
+            ];
+            Some(Value::Record { cols, vals, span })
+        };
+
         vec![
             Example {
                 description: "Convert the current date into a record.",
@@ -97,12 +125,11 @@ impl Command for SubCommand {
                 example: "'2020-04-12T22:10:57.123+02:00' | date to-record",
                 result: example_result_1(),
             },
-            // TODO: This should work but does not; see https://github.com/nushell/nushell/issues/7032
-            // Example {
-            //     description: "Convert a date into a record.",
-            //     example: "'2020-04-12 22:10:57 +0200' | into datetime | date to-record",
-            //     result: example_result_1(),
-            // },
+            Example {
+                description: "Convert a date into a record.",
+                example: "'2020-04-12 22:10:57 +0200' | into datetime | date to-record",
+                result: example_result_2(),
+            },
         ]
     }
 }

crates/nu-command/src/date/to_table.rs

@@ -81,6 +81,37 @@ impl Command for SubCommand {
             })
         };
 
+        let example_result_2 = || {
+            let span = Span::test_data();
+            let cols = vec![
+                "year".into(),
+                "month".into(),
+                "day".into(),
+                "hour".into(),
+                "minute".into(),
+                "second".into(),
+                "nanosecond".into(),
+                "timezone".into(),
+            ];
+            let vals = vec![
+                Value::Int { val: 2020, span },
+                Value::Int { val: 4, span },
+                Value::Int { val: 12, span },
+                Value::Int { val: 22, span },
+                Value::Int { val: 10, span },
+                Value::Int { val: 57, span },
+                Value::Int { val: 0, span },
+                Value::String {
+                    val: "+02:00".to_string(),
+                    span,
+                },
+            ];
+            Some(Value::List {
+                vals: vec![Value::Record { cols, vals, span }],
+                span,
+            })
+        };
+
         vec![
             Example {
                 description: "Convert the current date into a table.",
@@ -94,17 +125,14 @@ impl Command for SubCommand {
             },
             Example {
                 description: "Convert a given date into a table.",
-                //todo: resolve https://github.com/bspeice/dtparse/issues/40, which truncates nanosec bits
-                // for now, change the example to use date literal rather than string conversion, as workaround
                 example: "2020-04-12T22:10:57.000000789+02:00 | date to-table",
                 result: example_result_1(),
             },
-            // TODO: This should work but does not; see https://github.com/nushell/nushell/issues/7032
-            // Example {
-            //     description: "Convert a given date into a table.",
-            //     example: "'2020-04-12 22:10:57 +0200' | into datetime | date to-table",
-            //     result: example_result_1(),
-            // },
+            Example {
+                description: "Convert a given date into a table.",
+                example: "'2020-04-12 22:10:57 +0200' | into datetime | date to-table",
+                result: example_result_2(),
+            },
         ]
     }
 }

crates/nu-command/src/date/to_timezone.rs

@@ -99,12 +99,11 @@ impl Command for SubCommand {
                 example: r#""2020-10-10 10:00:00 +02:00" | date to-timezone "+0500""#,
                 result: example_result_1(),
             },
-            // TODO: This should work but does not; see https://github.com/nushell/nushell/issues/7032
-            // Example {
-            //     description: "Get the current date in Hawaii, from a datetime object",
-            //     example: r#""2020-10-10 10:00:00 +02:00" | into datetime | date to-timezone "+0500""#,
-            //     result: example_result_1(),
-            // },
+            Example {
+                description: "Get the current date in Hawaii, from a datetime object",
+                example: r#""2020-10-10 10:00:00 +02:00" | into datetime | date to-timezone "+0500""#,
+                result: example_result_1(),
+            },
         ]
     }
 }