tests(generators): added style support tests

packages/generators/__tests__/utils/styleSupport.test.ts

@@ -0,0 +1,74 @@
+import style, { StylingType } from '../../lib/utils/styleSupport';
+import { CustomGenerator } from '../../lib/types';
+
+describe('styleSupport', () => {
+    const getMockGenerator = (): CustomGenerator => {
+        const gen = new CustomGenerator(null, null);
+        gen.dependencies = [];
+        gen.configuration = {
+            config: {
+                topScope: [],
+            },
+        };
+        gen.isProd = false;
+        return gen;
+    };
+
+    it('generates CSS configuration', () => {
+        const gen = getMockGenerator();
+        const { ExtractUseProps, regExpForStyles } = style(gen, StylingType.CSS);
+        expect(gen.dependencies).toEqual(['css-loader', 'style-loader']);
+        expect(regExpForStyles).toEqual('/.css$/');
+        expect(ExtractUseProps.length).toEqual(2);
+    });
+
+    it('generates SASS configuration', () => {
+        const gen = getMockGenerator();
+        const { ExtractUseProps, regExpForStyles } = style(gen, StylingType.SASS);
+        expect(gen.dependencies).toEqual(['node-sass', 'sass-loader', 'css-loader', 'style-loader']);
+        expect(regExpForStyles).toEqual('/.(scss|css)$/');
+        expect(ExtractUseProps.length).toEqual(3);
+    });
+
+    it('generates production SASS configuration', () => {
+        const gen = getMockGenerator();
+        gen.isProd = true;
+        const { ExtractUseProps } = style(gen, StylingType.SASS);
+        expect(gen.dependencies).toEqual(['node-sass', 'sass-loader', 'css-loader']);
+        expect(ExtractUseProps.length).toEqual(2);
+    });
+
+    it('generates LESS configuration', () => {
+        const gen = getMockGenerator();
+        const { ExtractUseProps, regExpForStyles } = style(gen, StylingType.LESS);
+        expect(gen.dependencies).toEqual(['less', 'less-loader', 'css-loader', 'style-loader']);
+        expect(regExpForStyles).toEqual('/.(less|css)$/');
+        expect(ExtractUseProps.length).toEqual(3);
+    });
+
+    it('generates production LESS configuration', () => {
+        const gen = getMockGenerator();
+        gen.isProd = true;
+        const { ExtractUseProps } = style(gen, StylingType.LESS);
+        expect(gen.dependencies).toEqual(['less', 'less-loader', 'css-loader']);
+        expect(ExtractUseProps.length).toEqual(2);
+    });
+
+    it('generates PostCSS configuration', () => {
+        const gen = getMockGenerator();
+        const { ExtractUseProps, regExpForStyles } = style(gen, StylingType.PostCSS);
+        expect(gen.dependencies).toEqual(['precss', 'autoprefixer', 'css-loader', 'postcss-loader', 'style-loader']);
+        expect(regExpForStyles).toEqual('/.css$/');
+        expect(ExtractUseProps.length).toEqual(3);
+
+        expect(gen.configuration.config.topScope.length).not.toEqual(0);
+    });
+
+    it('generates production PostCSS configuration', () => {
+        const gen = getMockGenerator();
+        gen.isProd = true;
+        const { ExtractUseProps } = style(gen, StylingType.PostCSS);
+        expect(gen.dependencies).toEqual(['precss', 'autoprefixer', 'css-loader', 'postcss-loader']);
+        expect(ExtractUseProps.length).toEqual(2);
+    });
+});