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test: make island CSS rewrite tests cross-platform #73

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Merged
Brooooooklyn merged 3 commits into from
Apr 3, 2026
Merged

test: make island CSS rewrite tests cross-platform #73

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7b3c110
fix: make island CSS rewrite tests cross-platform
shulaoda Apr 3, 2026
1df4a58
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shulaoda Apr 3, 2026
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shulaoda Apr 3, 2026
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23 changes: 14 additions & 9 deletions packages/void/test/unit/island-css-rewrite.test.ts
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Original file line number Diff line number Diff line change
@@ -1,30 +1,35 @@
import { resolve } from "node:path";
import { normalizePath } from "vite";
import { describe, it, expect } from "vitest";
import { rewriteCssImportForVirtualModule } from "../../src/pages/islands-plugin";

/** Resolve a POSIX-style absolute path to a platform-correct path with forward slashes. */
const p = (posix: string) => normalizePath(resolve(posix));

describe("rewriteCssImportForVirtualModule", () => {
it("rewrites relative CSS import to absolute path", () => {
const result = rewriteCssImportForVirtualModule(
'import "./global.css"',
"./global.css",
"/project/pages/layout.tsx",
p("/project/pages/layout.tsx"),
);
expect(result).toBe('import "/project/pages/global.css";');
expect(result).toBe(`import "${p("/project/pages/global.css")}";`);
});

it("rewrites parent-relative CSS import to absolute path", () => {
const result = rewriteCssImportForVirtualModule(
'import "../styles/theme.css"',
"../styles/theme.css",
"/project/pages/blog/index.tsx",
p("/project/pages/blog/index.tsx"),
);
expect(result).toBe('import "/project/pages/styles/theme.css";');
expect(result).toBe(`import "${p("/project/pages/styles/theme.css")}";`);
});

it("preserves bare specifiers (package imports)", () => {
const result = rewriteCssImportForVirtualModule(
'import "@void/md/theme.css"',
"@void/md/theme.css",
"/project/pages/layout.tsx",
p("/project/pages/layout.tsx"),
);
expect(result).toBe('import "@void/md/theme.css";');
});
Expand All @@ -33,7 +38,7 @@ describe("rewriteCssImportForVirtualModule", () => {
const result = rewriteCssImportForVirtualModule(
'import "/absolute/path/style.css"',
"/absolute/path/style.css",
"/project/pages/layout.tsx",
p("/project/pages/layout.tsx"),
);
expect(result).toBe('import "/absolute/path/style.css";');
});
Expand All @@ -42,7 +47,7 @@ describe("rewriteCssImportForVirtualModule", () => {
const result = rewriteCssImportForVirtualModule(
' import "some-lib/styles.css" ',
"some-lib/styles.css",
"/project/pages/layout.tsx",
p("/project/pages/layout.tsx"),
);
expect(result).toBe('import "some-lib/styles.css";');
});
Expand All @@ -52,10 +57,10 @@ describe("rewriteCssImportForVirtualModule", () => {
const result = rewriteCssImportForVirtualModule(
'import "./card.css"',
"./card.css",
"/project/pages/components/deep/Card.tsx",
p("/project/pages/components/deep/Card.tsx"),
);
// Should always use forward slashes regardless of OS
expect(result).not.toContain("\\");
expect(result).toBe('import "/project/pages/components/deep/card.css";');
expect(result).toBe(`import "${p("/project/pages/components/deep/card.css")}";`);
});
});
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