diff --git a/src/data/schema/art.rs b/src/data/schema/art.rs
index a3f87f4..92815b9 100644
--- a/src/data/schema/art.rs
+++ b/src/data/schema/art.rs
@@ -1,7 +1,7 @@
 //! Module defining [CardArt].
 
 /// An art asset associated with a [Card].
-#[derive(serde::Serialize, serde::Deserialize, Clone, Debug)]
+#[derive(Clone, Debug, PartialEq, Eq, serde::Serialize, serde::Deserialize)]
 pub struct CardArt {
     /// URL to the `.png` image of the rendered card.
     ///
@@ -51,4 +51,32 @@ impl CardArt {
             .replace("https://dd.b.pvp.net/latest/set1", "https://poro.steffo.eu/set1-en_us")
             .replace(".png", ".jpg")
     }
+}
+
+
+#[cfg(test)]
+mod tests {
+    use super::CardArt;
+
+    #[test]
+    fn deserialize() {
+        assert_eq!(
+            serde_json::de::from_str::<'static, CardArt>(r#"{"gameAbsolutePath": https://dd.b.pvp.net/latest/set1/en_us/img/cards/01DE001.png, "fullAbsolutePath": "https://dd.b.pvp.net/latest/set1/en_us/img/cards/01DE001-full.png"}"#).unwrap(),
+            CardArt {
+                card_png: "https://dd.b.pvp.net/latest/set1/en_us/img/cards/01DE001.png",
+                full_png: "https://dd.b.pvp.net/latest/set1/en_us/img/cards/01DE001-full.png",
+            }
+        );
+    }
+
+    #[test]
+    fn png_to_jpg() {
+        let art = CardArt {
+            card_png: "https://dd.b.pvp.net/latest/set1/en_us/img/cards/01DE001.png",
+            full_png: "https://dd.b.pvp.net/latest/set1/en_us/img/cards/01DE001-full.png",
+        };
+
+        assert_eq!(art.card_jpg(), "https://poro.steffo.eu/set1-en_us/en_us/img/cards/01DE001.jpg");
+        assert_eq!(art.full_jpg(), "https://poro.steffo.eu/set1-en_us/en_us/img/cards/01DE001-full.jpg");
+    }
 }
\ No newline at end of file
diff --git a/src/data/schema/card.rs b/src/data/schema/card.rs
index 02371e5..2ec263d 100644
--- a/src/data/schema/card.rs
+++ b/src/data/schema/card.rs
@@ -10,7 +10,7 @@ use super::rarity::CardRarity;
 use super::speed::SpellSpeed;
 
 /// A single Legends of Runeterra card as represented in the data files from [Data Dragon](https://developer.riotgames.com/docs/lor).
-#[derive(serde::Serialize, serde::Deserialize, Clone, Debug)]
+#[derive(Clone, Debug, PartialEq, Eq, serde::Serialize, serde::Deserialize)]
 #[serde(rename_all="camelCase")]
 pub struct Card {
     /// Unique seven-character identifier of the card.
diff --git a/src/data/schema/keyword.rs b/src/data/schema/keyword.rs
index 3e9340f..527147d 100644
--- a/src/data/schema/keyword.rs
+++ b/src/data/schema/keyword.rs
@@ -4,7 +4,7 @@
 ///
 /// Since more keywords will probably be added in the future, this enum is [non_exaustive](https://doc.rust-lang.org/reference/attributes/type_system.html#the-non_exhaustive-attribute).
 #[non_exhaustive]
-#[derive(serde::Serialize, serde::Deserialize, Clone, Debug)]
+#[derive(Clone, Debug, PartialEq, Eq, serde::Serialize, serde::Deserialize)]
 pub enum CardKeyword {
     /// Overwhelm on spells.
     ///
@@ -331,3 +331,89 @@ pub enum CardKeyword {
     #[serde(other)]
     Unsupported,
 }
+
+
+#[cfg(test)]
+mod tests {
+    use super::CardKeyword;
+
+    macro_rules! test_deserialization {
+        ( $id:ident, $src:literal, $res:expr ) => {
+            #[test]
+            fn $id() {
+                assert_eq!(serde_json::de::from_str::<'static, CardKeyword>($src).unwrap(), $res);
+            }
+        }
+    }
+
+    test_deserialization!(deserialize_spelloverwhelm, "SpellOverwhelm", CardKeyword::SpellOverwhelm);
+    test_deserialization!(deserialize_burst, "Burst", CardKeyword::Burst);
+    test_deserialization!(deserialize_countdown, "Countdown", CardKeyword::Countdown);
+    test_deserialization!(deserialize_onplay, "PlaySkillMark", CardKeyword::OnPlay);
+    test_deserialization!(deserialize_landmark, "LandmarkVisualOnly", CardKeyword::Landmark);
+    test_deserialization!(deserialize_shurima, "Shurima", CardKeyword::Shurima);
+    test_deserialization!(deserialize_attach, "Attach", CardKeyword::Attach);
+    test_deserialization!(deserialize_noxus, "Noxus", CardKeyword::Noxus);
+    test_deserialization!(deserialize_fleeting, "Fleeting", CardKeyword::Fleeting);
+    test_deserialization!(deserialize_clobbernoemptyslotrequirement, "ClobberNoEmptySlotRequirement", CardKeyword::ClobberNoEmptySlotRequirement);
+    test_deserialization!(deserialize_nab, "Nab", CardKeyword::Nab);
+    test_deserialization!(deserialize_focus, "Focus", CardKeyword::Focus);
+    test_deserialization!(deserialize_enlightened, "Enlightened", CardKeyword::Enlightened);
+    test_deserialization!(deserialize_invoke, "Invoke", CardKeyword::Invoke);
+    test_deserialization!(deserialize_boon, "Boon", CardKeyword::Boon);
+    test_deserialization!(deserialize_trap, "Autoplay", CardKeyword::Trap);
+    test_deserialization!(deserialize_drain, "Drain", CardKeyword::Drain);
+    test_deserialization!(deserialize_lastbreath, "LastBreath", CardKeyword::LastBreath);
+    test_deserialization!(deserialize_demacia, "Demacia", CardKeyword::Demacia);
+    test_deserialization!(deserialize_bandlecity, "BandleCity", CardKeyword::BandleCity);
+    test_deserialization!(deserialize_fast, "Fast", CardKeyword::Fast);
+    test_deserialization!(deserialize_bilgewater, "Bilgewater", CardKeyword::Bilgewater);
+    test_deserialization!(deserialize_runeterra, "Runeterra", CardKeyword::Runeterra);
+    test_deserialization!(deserialize_recall, "Recall", CardKeyword::Recall);
+    test_deserialization!(deserialize_weakest, "Weakest", CardKeyword::Weakest);
+    test_deserialization!(deserialize_support, "Support", CardKeyword::Support);
+    test_deserialization!(deserialize_slow, "Slow", CardKeyword::Slow);
+    test_deserialization!(deserialize_obliterate, "Obliterate", CardKeyword::Obliterate);
+    test_deserialization!(deserialize_imbue, "Imbue", CardKeyword::Imbue);
+    test_deserialization!(deserialize_targon, "MtTargon", CardKeyword::Targon);
+    test_deserialization!(deserialize_shadowisles, "ShadowIsles", CardKeyword::ShadowIsles);
+    test_deserialization!(deserialize_auravisualfakekeyword, "AuraVisualFakeKeyword", CardKeyword::AuraVisualFakeKeyword);
+    test_deserialization!(deserialize_ionia, "Ionia", CardKeyword::Ionia);
+    test_deserialization!(deserialize_nightfall, "Nightfall", CardKeyword::Nightfall);
+    test_deserialization!(deserialize_piltoverzaun, "PiltoverZaun", CardKeyword::PiltoverZaun);
+    test_deserialization!(deserialize_attune, "Attune", CardKeyword::Attune);
+    test_deserialization!(deserialize_daybreak, "Daybreak", CardKeyword::Daybreak);
+    test_deserialization!(deserialize_silenceindividualkeyword, "SilenceIndividualKeyword", CardKeyword::SilenceIndividualKeyword);
+    test_deserialization!(deserialize_skill, "Skill", CardKeyword::Skill);
+    test_deserialization!(deserialize_plunder, "Plunder", CardKeyword::Plunder);
+    test_deserialization!(deserialize_doubleattack, "DoubleAttack", CardKeyword::DoubleAttack);
+    test_deserialization!(deserialize_vulnerable, "Vulnerable", CardKeyword::Vulnerable);
+    test_deserialization!(deserialize_elusive, "Elusive", CardKeyword::Elusive);
+    test_deserialization!(deserialize_stun, "Stun", CardKeyword::Stun);
+    test_deserialization!(deserialize_fated, "Fated", CardKeyword::Fated);
+    test_deserialization!(deserialize_blockelusive, "BlockElusive", CardKeyword::BlockElusive);
+    test_deserialization!(deserialize_fury, "Fury", CardKeyword::Fury);
+    test_deserialization!(deserialize_barrier, "Barrier", CardKeyword::Barrier);
+    test_deserialization!(deserialize_immobile, "Immobile", CardKeyword::Immobile);
+    test_deserialization!(deserialize_hallowed, "Hallowed", CardKeyword::Hallowed);
+    test_deserialization!(deserialize_evolve, "Evolve", CardKeyword::Evolve);
+    test_deserialization!(deserialize_frostbite, "Frostbite", CardKeyword::Frostbite);
+    test_deserialization!(deserialize_overwhelm, "Overwhelm", CardKeyword::Overwhelm);
+    test_deserialization!(deserialize_quickattack, "QuickStrike", CardKeyword::QuickAttack);
+    test_deserialization!(deserialize_tough, "Tough", CardKeyword::Tough);
+    test_deserialization!(deserialize_regeneration, "Regeneration", CardKeyword::Regeneration);
+    test_deserialization!(deserialize_silenced, "Silenced", CardKeyword::Silenced);
+    test_deserialization!(deserialize_spellshield, "SpellShield", CardKeyword::SpellShield);
+    test_deserialization!(deserialize_lifesteal, "Lifesteal", CardKeyword::Lifesteal);
+    test_deserialization!(deserialize_augment, "Augment", CardKeyword::Augment);
+    test_deserialization!(deserialize_impact, "Impact", CardKeyword::Impact);
+    test_deserialization!(deserialize_scout, "Scout", CardKeyword::Scout);
+    test_deserialization!(deserialize_ephemeral, Ephemeral, CardKeyword::Ephemeral);
+    test_deserialization!(deserialize_lurk, Lurker, CardKeyword::Lurk);
+    test_deserialization!(deserialize_formidable, Formidable, CardKeyword::Formidable);
+    test_deserialization!(deserialize_challenger, Challenger, CardKeyword::Challenger);
+    test_deserialization!(deserialize_fearsome, Fearsome, CardKeyword::Fearsome);
+    test_deserialization!(deserialize_cantblock, CantBlock, CardKeyword::CantBlock);
+    test_deserialization!(deserialize_deep, Deep, CardKeyword::Deep);
+    test_deserialization!(deserialize_unsupported, Unsupported, CardKeyword::Unsupported);
+}
diff --git a/src/data/schema/rarity.rs b/src/data/schema/rarity.rs
index 8b3570f..1b8b9be 100644
--- a/src/data/schema/rarity.rs
+++ b/src/data/schema/rarity.rs
@@ -1,21 +1,48 @@
 //! Module defining [CardRarity].
 
 /// A possible card rarity.
-#[derive(serde::Serialize, serde::Deserialize, Clone, Debug)]
+#[derive(Clone, Debug, PartialEq, Eq, serde::Serialize, serde::Deserialize)]
 pub enum CardRarity {
     /// The card has no rarity, as it probably is not collectible.
+    #[serde(alias = "")]
     #[serde(alias = "NONE")]
     None,
     /// A common card.
-    #[serde(alias = "COMMON")]
+    #[serde(rename = "COMMON")]
     Common,
     /// A rare card.
-    #[serde(alias = "RARE")]
+    #[serde(rename = "RARE")]
     Rare,
     /// An epic card.
-    #[serde(alias = "EPIC")]
+    #[serde(rename = "EPIC")]
     Epic,
     /// A champion.
     #[serde(alias = "CHAMPION")]
     Champion,
 }
+
+
+#[cfg(test)]
+mod tests {
+    use super::CardRarity;
+
+    macro_rules! test_deserialization {
+        ( $id:ident, $src:literal, $res:expr ) => {
+            #[test]
+            fn $id() {
+                assert_eq!(serde_json::de::from_str::<'static, CardRarity>($src).unwrap(), $res);
+            }
+        }
+    }
+
+    test_deserialization!(deserialize_none, "None", CardRarity::None);
+    test_deserialization!(deserialize_common, "COMMON", CardRarity::Common);
+    test_deserialization!(deserialize_rare, "RARE", CardRarity::Rare);
+    test_deserialization!(deserialize_epic, "EPIC", CardRarity::Epic);
+    test_deserialization!(deserialize_champion, "Champion", CardRarity::Champion);
+
+    #[test]
+    fn deserialize_fallback() {
+        assert!(serde_json::de::from_str::<'static, CardRarity>("Xyzzy").is_err());
+    }
+}
diff --git a/src/data/schema/region.rs b/src/data/schema/region.rs
index 015d674..62399a2 100644
--- a/src/data/schema/region.rs
+++ b/src/data/schema/region.rs
@@ -4,7 +4,7 @@
 ///
 /// Since more regions might be added in the future, especially Origin ones, this enum is [non_exaustive](https://doc.rust-lang.org/reference/attributes/type_system.html#the-non_exhaustive-attribute).
 #[non_exhaustive]
-#[derive(serde::Serialize, serde::Deserialize, Clone, Debug)]
+#[derive(Clone, Debug, PartialEq, Eq, serde::Serialize, serde::Deserialize)]
 pub enum CardRegion {
     /// Noxus.
     Noxus,
@@ -39,3 +39,33 @@ pub enum CardRegion {
     #[serde(other)]
     Unsupported,
 }
+
+
+#[cfg(test)]
+mod tests {
+    use super::CardRegion;
+
+    macro_rules! test_deserialization {
+        ( $id:ident, $src:literal, $res:expr ) => {
+            #[test]
+            fn $id() {
+                assert_eq!(serde_json::de::from_str::<'static, CardRegion>($src).unwrap(), $res);
+            }
+        }
+    }
+
+    test_deserialization!(deserialize_noxus, "Noxus", CardRegion::Noxus);
+    test_deserialization!(deserialize_demacia, "Demacia", CardRegion::Demacia);
+    test_deserialization!(deserialize_freljord, "Freljord", CardRegion::Freljord);
+    test_deserialization!(deserialize_shadowisles, "ShadowIsles", CardRegion::ShadowIsles);
+    test_deserialization!(deserialize_targon, "Targon", CardRegion::Targon);
+    test_deserialization!(deserialize_ionia, "Ionia", CardRegion::Ionia);
+    test_deserialization!(deserialize_shurima, "Shurima", CardRegion::Shurima);
+    test_deserialization!(deserialize_piltoverzaun, "PiltoverZaun", CardRegion::PiltoverZaun);
+    test_deserialization!(deserialize_bandlecity, "BandleCity", CardRegion::BandleCity);
+    test_deserialization!(deserialize_runeterra, "Runeterra", CardRegion::Runeterra);
+    test_deserialization!(deserialize_jhin, "Jhin", CardRegion::Jhin);
+    test_deserialization!(deserialize_evelynn, "Evelynn", CardRegion::Evelynn);
+    test_deserialization!(deserialize_bard, "Bard", CardRegion::Bard);
+    test_deserialization!(deserialize_fallback, "Xyzzy", CardRegion::Unsupported);
+}
diff --git a/src/data/schema/set.rs b/src/data/schema/set.rs
index 301829e..ae552df 100644
--- a/src/data/schema/set.rs
+++ b/src/data/schema/set.rs
@@ -4,7 +4,7 @@
 ///
 /// Since more sets will definitely be added in the future, this enum is [non_exaustive](https://doc.rust-lang.org/reference/attributes/type_system.html#the-non_exhaustive-attribute).
 #[non_exhaustive]
-#[derive(serde::Serialize, serde::Deserialize, Clone, Debug)]
+#[derive(Clone, Debug, PartialEq, Eq, serde::Serialize, serde::Deserialize)]
 pub enum CardSet {
     /// Foundations, or "base".
     #[serde(rename = "Set1")]
@@ -38,3 +38,27 @@ pub enum CardSet {
     #[serde(other)]
     Unsupported,
 }
+
+
+#[cfg(test)]
+mod tests {
+    use super::CardSet;
+
+    macro_rules! test_deserialization {
+        ( $id:ident, $src:literal, $res:expr ) => {
+            #[test]
+            fn $id() {
+                assert_eq!(serde_json::de::from_str::<'static, CardSet>($src).unwrap(), $res);
+            }
+        }
+    }
+
+    test_deserialization!(deserialize_set1, "Set1", CardSet::Foundations);
+    test_deserialization!(deserialize_set2, "Set2", CardSet::RisingTides);
+    test_deserialization!(deserialize_set3, "Set3", CardSet::CallOfTheMountain);
+    test_deserialization!(deserialize_set4, "Set4", CardSet::EmpiresOfTheAscended);
+    test_deserialization!(deserialize_set5, "Set5", CardSet::BeyondTheBandlewood);
+    test_deserialization!(deserialize_set6, "Set6", CardSet::Worldwalker);
+    test_deserialization!(deserialize_setevent, "SetEvent", CardSet::Events);
+    test_deserialization!(deserialize_fallback, "Xyzzy", CardSet::Unsupported);
+}
diff --git a/src/data/schema/speed.rs b/src/data/schema/speed.rs
index 91dd3ef..c4c3351 100644
--- a/src/data/schema/speed.rs
+++ b/src/data/schema/speed.rs
@@ -1,10 +1,11 @@
 //! Module defining [SpellSpeed].
 
+
 /// A possible spell speed.
-#[derive(serde::Serialize, serde::Deserialize, Clone, Debug)]
+#[derive(Clone, Debug, PartialEq, Eq, serde::Serialize, serde::Deserialize)]
 pub enum SpellSpeed {
     /// Non-spell cards have this speed.
-    #[serde(alias = "")]
+    #[serde(rename = "")]
     None,
     /// A Slow spell.
     Slow,
@@ -12,4 +13,29 @@ pub enum SpellSpeed {
     Fast,
     /// Either a Burst or a Focus spell; to disambiguate between the two, check for the `Focus` keyword.
     Burst,
-}
\ No newline at end of file
+}
+
+
+#[cfg(test)]
+mod tests {
+    use super::SpellSpeed;
+
+    macro_rules! test_deserialization {
+        ( $id:ident, $src:literal, $res:expr ) => {
+            #[test]
+            fn $id() {
+                assert_eq!(serde_json::de::from_str::<'static, SpellSpeed>($src).unwrap(), $res);
+            }
+        }
+    }
+
+    test_deserialization!(deserialize_none, "", SpellSpeed::None);
+    test_deserialization!(deserialize_slow, "Slow", SpellSpeed::Slow);
+    test_deserialization!(deserialize_fast, "Fast", SpellSpeed::Fast);
+    test_deserialization!(deserialize_burst, "Burst", SpellSpeed::Burst);
+
+    #[test]
+    fn deserialize_fallback() {
+        assert!(serde_json::de::from_str::<'static, SpellSpeed>("Xyzzy").is_err());
+    }
+}
diff --git a/src/data/schema/type.rs b/src/data/schema/type.rs
index c9e4d46..8d7f4ef 100644
--- a/src/data/schema/type.rs
+++ b/src/data/schema/type.rs
@@ -1,10 +1,11 @@
 //! Module defining [Type].
 
+
 /// A possible card type.
 ///
 /// Since more types might be added in the future, as it happened with landmarks, this enum is [non_exaustive](https://doc.rust-lang.org/reference/attributes/type_system.html#the-non_exhaustive-attribute).
 #[non_exhaustive]
-#[derive(serde::Serialize, serde::Deserialize, Clone, Debug)]
+#[derive(Clone, Debug, PartialEq, Eq, serde::Serialize, serde::Deserialize)]
 pub enum CardType {
     /// A spell.
     Spell,
@@ -21,4 +22,40 @@ pub enum CardType {
     /// Unsupported card type.
     #[serde(other)]
     Unsupported,
+}
+
+
+#[cfg(test)]
+mod tests {
+    use super::CardType;
+
+    #[test]
+    fn deserialize_spell() {
+        assert_eq!(serde_json::de::from_str::<'static, CardType>("Spell").unwrap(), CardType::Spell);
+    }
+
+    #[test]
+    fn deserialize_unit() {
+        assert_eq!(serde_json::de::from_str::<'static, CardType>("Unit").unwrap(), CardType::Unit);
+    }
+
+    #[test]
+    fn deserialize_ability() {
+        assert_eq!(serde_json::de::from_str::<'static, CardType>("Ability").unwrap(), CardType::Ability);
+    }
+
+    #[test]
+    fn deserialize_landmark() {
+        assert_eq!(serde_json::de::from_str::<'static, CardType>("Landmark").unwrap(), CardType::Landmark);
+    }
+
+    #[test]
+    fn deserialize_trap() {
+        assert_eq!(serde_json::de::from_str::<'static, CardType>("Trap").unwrap(), CardType::Trap);
+    }
+
+    #[test]
+    fn deserialize_fallback() {
+        assert_eq!(serde_json::de::from_str::<'static, CardType>("Xyzzy").unwrap(), CardType::Unsupported);
+    }
 }
\ No newline at end of file