test: package resolving (#530)

Author: alexander-akait

test/__snapshots__/loader.test.js.snap

@@ -392,6 +392,37 @@ exports[`loader should resolve nested imports: errors 1`] = `[]`;
 
 exports[`loader should resolve nested imports: warnings 1`] = `[]`;
 
+exports[`loader should resolve nested package #2: css 1`] = `
+".less-package-1-nested {
+  background: red;
+}
+.less-package-2 {
+  background: red;
+}
+.top {
+  color: red;
+}
+"
+`;
+
+exports[`loader should resolve nested package #2: errors 1`] = `[]`;
+
+exports[`loader should resolve nested package #2: warnings 1`] = `[]`;
+
+exports[`loader should resolve nested package: css 1`] = `
+".less-package-1-nested {
+  background: red;
+}
+.less-package-2 {
+  background: red;
+}
+"
+`;
+
+exports[`loader should resolve nested package: errors 1`] = `[]`;
+
+exports[`loader should resolve nested package: warnings 1`] = `[]`;
+
 exports[`loader should resolve non-less import with alias: css 1`] = `
 ".some-file {
   background: hotpink;

test/fixtures/less-package.less

@@ -0,0 +1,5 @@
+@import "less-package-2";
+
+.top {
+  color: red;
+}

test/fixtures/node_modules/less-package-1/index.less

@@ -115,6 +115,24 @@ const pathMap = {
     "custom-main-files",
     "custom.less"
   ),
+  "less-package-1/index.less": path.resolve(
+    __dirname,
+    "..",
+    "fixtures",
+    "node_modules",
+    "less-package-2",
+    "node_modules",
+    "less-package-1",
+    "index.less"
+  ),
+  "less-package-2": path.resolve(
+    __dirname,
+    "..",
+    "fixtures",
+    "node_modules",
+    "less-package-2",
+    "index.less"
+  ),
 };
 
 class ResolvePlugin extends less.FileManager {

test/fixtures/node_modules/less-package-1/package.json

@@ -843,6 +843,32 @@ describe("loader", () => {
     expect(getErrors(stats)).toMatchSnapshot("errors");
   });
 
+  it("should resolve nested package", async () => {
+    const testId = "./node_modules/less-package-2/index.less";
+    const compiler = getCompiler(testId);
+    const stats = await compile(compiler);
+    const codeFromBundle = getCodeFromBundle(stats, compiler);
+    const codeFromLess = await getCodeFromLess(testId);
+
+    expect(codeFromBundle.css).toBe(codeFromLess.css);
+    expect(codeFromBundle.css).toMatchSnapshot("css");
+    expect(getWarnings(stats)).toMatchSnapshot("warnings");
+    expect(getErrors(stats)).toMatchSnapshot("errors");
+  });
+
+  it("should resolve nested package #2", async () => {
+    const testId = "./less-package.less";
+    const compiler = getCompiler(testId);
+    const stats = await compile(compiler);
+    const codeFromBundle = getCodeFromBundle(stats, compiler);
+    const codeFromLess = await getCodeFromLess(testId);
+
+    expect(codeFromBundle.css).toBe(codeFromLess.css);
+    expect(codeFromBundle.css).toMatchSnapshot("css");
+    expect(getWarnings(stats)).toMatchSnapshot("warnings");
+    expect(getErrors(stats)).toMatchSnapshot("errors");
+  });
+
   // TODO bug on windows
   it.skip("should work with circular imports", async () => {
     const testId = "./circular.less";