diff --git a/src/pheatures/Compare.test.ts b/test/pheatures/Compare.test.ts
similarity index 87%
rename from src/pheatures/Compare.test.ts
rename to test/pheatures/Compare.test.ts
index 34f0050..f125421 100644
--- a/src/pheatures/Compare.test.ts
+++ b/test/pheatures/Compare.test.ts
@@ -2,8 +2,8 @@ import { expect, test } from "vitest";
 
 import { CONS, DIA, VOW } from "@/utils/phonemes";
 
-import { commonFeatures, differentFeatures } from "./Compare";
-import PhonemeInventory from "./PhonemeInventory";
+import { commonFeatures, differentFeatures } from "@/pheatures/Compare";
+import PhonemeInventory from "@/pheatures/PhonemeInventory";
 
 import symbolList from "./SymbolList.test";
 
diff --git a/src/pheatures/FeatureList.test.ts b/test/pheatures/FeatureList.test.ts
similarity index 99%
rename from src/pheatures/FeatureList.test.ts
rename to test/pheatures/FeatureList.test.ts
index e28ae84..919cb7f 100644
--- a/src/pheatures/FeatureList.test.ts
+++ b/test/pheatures/FeatureList.test.ts
@@ -2,7 +2,8 @@ import { expect, test } from "vitest";
 
 import { CONS, DIA, VOW } from "@/utils/phonemes";
 
-import FeatureList from "./FeatureList";
+import FeatureList from "@/pheatures/FeatureList";
+
 import inventories from "./PhonemeInventory.test.ts";
 import symbolList from "./SymbolList.test";
 
diff --git a/src/pheatures/IPASkeleton.test.ts b/test/pheatures/IPASkeleton.test.ts
similarity index 86%
rename from src/pheatures/IPASkeleton.test.ts
rename to test/pheatures/IPASkeleton.test.ts
index 0b2df01..d1846f7 100644
--- a/src/pheatures/IPASkeleton.test.ts
+++ b/test/pheatures/IPASkeleton.test.ts
@@ -3,9 +3,9 @@ import { expect, test } from "vitest";
 import consonantChartsPath from "@/assets/data/ipa-chart/ipachart-consonants.tsv";
 import parseFile from "@/utils/dataTransformer";
 
-import ComplexSymbol from "./ComplexSymbol";
-import { diacriticList } from "./Diacritics";
-import IPASkeleton from "./IPASkeleton";
+import ComplexSymbol from "@/pheatures/ComplexSymbol";
+import { diacriticList } from "@/pheatures/Diacritics";
+import IPASkeleton from "@/pheatures/IPASkeleton";
 
 import symbolList from "./SymbolList.test";
 
diff --git a/src/pheatures/PhonemeInventory.test.ts b/test/pheatures/PhonemeInventory.test.ts
similarity index 92%
rename from src/pheatures/PhonemeInventory.test.ts
rename to test/pheatures/PhonemeInventory.test.ts
index c5cf9fd..2508791 100644
--- a/src/pheatures/PhonemeInventory.test.ts
+++ b/test/pheatures/PhonemeInventory.test.ts
@@ -3,7 +3,8 @@ import { expect, test } from "vitest";
 import inventoryFiles from "@/assets/data/phoneme-inventories/";
 import parseFile from "@/utils/dataTransformer";
 
-import PhonemeInventory from "./PhonemeInventory";
+import PhonemeInventory from "@/pheatures/PhonemeInventory";
+
 import symbolList from "./SymbolList.test";
 
 type InventoryName = keyof typeof inventoryFiles;
diff --git a/src/pheatures/SymbolList.test.ts b/test/pheatures/SymbolList.test.ts
similarity index 78%
rename from src/pheatures/SymbolList.test.ts
rename to test/pheatures/SymbolList.test.ts
index 5bcd6ed..018e8a4 100644
--- a/src/pheatures/SymbolList.test.ts
+++ b/test/pheatures/SymbolList.test.ts
@@ -3,8 +3,8 @@ import { expect, test } from "vitest";
 import symbolListPath from "@/assets/data/symbol-list.tsv";
 import parseFile from "@/utils/dataTransformer";
 
-import { RawSymbol } from "./BaseSymbol";
-import BaseSymbolList from "./BaseSymbolList";
+import { RawSymbol } from "@/pheatures/BaseSymbol";
+import BaseSymbolList from "@/pheatures/BaseSymbolList";
 
 const rawSymbols = parseFile<RawSymbol>(symbolListPath, true);
 const symbolList = new BaseSymbolList(rawSymbols);
diff --git a/tsconfig.app.json b/tsconfig.app.json
index 2ea9dc0..21c7999 100644
--- a/tsconfig.app.json
+++ b/tsconfig.app.json
@@ -25,5 +25,5 @@
 		"noFallthroughCasesInSwitch": true,
 		"noUncheckedSideEffectImports": true
 	},
-	"include": ["src"]
+	"include": ["src", "test"]
 }