test: add test for use with Sass partials (#258)

Author: mrmckeb

src/helpers/__tests__/__snapshots__/getDtsSnapshot.test.ts.snap

@@ -1361,3 +1361,15 @@ export let myAnimation: string | undefined;
 export let myFolderIndex: string | undefined;
 "
 `;
+
+exports[`helpers / cssSnapshots with sass @use and a partial should find external file from loadPaths 1`] = `
+{
+  "class-with-partial": "class-with-partial",
+}
+`;
+
+exports[`helpers / cssSnapshots with sass @use and a partial should find external file from loadPaths 2`] = `
+".class-with-partial {
+  background-color: rebeccapurple;
+}"
+`;

src/helpers/__tests__/fixtures/_partial.scss

@@ -0,0 +1 @@
+$primary-color: rebeccapurple;

src/helpers/__tests__/fixtures/partial.module.scss

@@ -0,0 +1,5 @@
+@use 'partial';
+
+.class-with-partial {
+  background-color: partial.$primary-color;
+}

src/helpers/__tests__/getDtsSnapshot.test.ts

@@ -152,6 +152,26 @@ describe('helpers / cssSnapshots', () => {
     });
   });
 
+  describe('with sass @use and a partial', () => {
+    const fileName = join(__dirname, 'fixtures', 'partial.module.scss');
+    const css = readFileSync(fileName, 'utf8');
+
+    it('should find external file from loadPaths', () => {
+      const cssExports = getCssExports({
+        css,
+        fileName,
+        logger,
+        options,
+        processor,
+        compilerOptions,
+        directory: __dirname,
+      });
+
+      expect(cssExports.classes).toMatchSnapshot();
+      expect(cssExports.css).toMatchSnapshot();
+    });
+  });
+
   describe('with loadPaths in sass options', () => {
     const fileName = join(__dirname, 'fixtures', 'include-path.module.scss');
     const css = readFileSync(fileName, 'utf8');