feat(filter)!: Allow key wildcards

Fixes #134

crates/snapbox/src/assert/mod.rs

@@ -50,6 +50,7 @@ impl Assert {
     /// - `[..]` is a character-wildcard when inside a line
     /// - `[EXE]` matches `.exe` on Windows
     /// - `"{...}"` is a JSON value wildcard
+    /// - `"...": "{...}"` is a JSON key-value wildcard
     /// - `\` to `/`
     /// - Newlines
     ///

crates/snapbox/src/cmd.rs

@@ -595,6 +595,7 @@ impl OutputAssert {
     /// - `[..]` is a character-wildcard when inside a line
     /// - `[EXE]` matches `.exe` on Windows
     /// - `"{...}"` is a JSON value wildcard
+    /// - `"...": "{...}"` is a JSON key-value wildcard
     /// - `\` to `/`
     /// - Newlines
     ///
@@ -654,6 +655,7 @@ impl OutputAssert {
     /// - `[..]` is a character-wildcard when inside a line
     /// - `[EXE]` matches `.exe` on Windows
     /// - `"{...}"` is a JSON value wildcard
+    /// - `"...": "{...}"` is a JSON key-value wildcard
     /// - `\` to `/`
     /// - Newlines
     ///

crates/snapbox/src/filter/mod.rs

@@ -210,6 +210,7 @@ fn normalize_value_matches(
 ) {
     use serde_json::Value::*;
 
+    const KEY_WILDCARD: &str = "...";
     const VALUE_WILDCARD: &str = "{...}";
 
     match (actual, expected) {
@@ -254,13 +255,20 @@ fn normalize_value_matches(
             }
         }
         (Object(act), Object(exp)) => {
+            let has_key_wildcard =
+                exp.get(KEY_WILDCARD).and_then(|v| v.as_str()) == Some(VALUE_WILDCARD);
             for (actual_key, mut actual_value) in std::mem::replace(act, serde_json::Map::new()) {
                 let actual_key = substitutions.normalize(&actual_key, "");
                 if let Some(expected_value) = exp.get(&actual_key) {
                     normalize_value_matches(&mut actual_value, expected_value, substitutions)
+                } else if has_key_wildcard {
+                    continue;
                 }
                 act.insert(actual_key, actual_value);
             }
+            if has_key_wildcard {
+                act.insert(KEY_WILDCARD.to_owned(), String(VALUE_WILDCARD.to_owned()));
+            }
         }
         (_, _) => {}
     }

crates/snapbox/src/filter/test.rs

@@ -260,8 +260,8 @@ fn json_normalize_wildcard_key() {
 
     let expected_actual = json!({
         "a": "value-a",
-        "b": "value-b",
         "c": "value-c",
+        "...": "{...}",
     });
     let expected_actual = Data::json(expected_actual);
     assert_eq!(actual, expected_actual);

crates/snapbox/src/macros.rs

@@ -5,6 +5,7 @@
 /// - `[..]` is a character-wildcard when inside a line
 /// - `[EXE]` matches `.exe` on Windows
 /// - `"{...}"` is a JSON value wildcard
+/// - `"...": "{...}"` is a JSON key-value wildcard
 /// - `\` to `/`
 /// - Newlines
 ///

crates/tryfn/src/lib.rs

@@ -74,6 +74,7 @@ where
     /// - `[..]` is a character-wildcard when inside a line
     /// - `[EXE]` matches `.exe` on Windows
     /// - `"{...}"` is a JSON value wildcard
+    /// - `"...": "{...}"` is a JSON key-value wildcard
     /// - `\` to `/`
     /// - Newlines
     ///