fix: should get project's tsconfigPath correctly (#687)

Author: 9aoy

packages/core/rstest.config.ts

@@ -5,6 +5,7 @@ export default defineConfig({
   include: ['<rootDir>/tests/**/*.test.ts'],
   globals: true,
   source: {
+    tsconfigPath: './tests/tsconfig.json',
     define: {
       RSTEST_VERSION: JSON.stringify('0.0.0'),
       'process.env.GITHUB_ACTIONS': JSON.stringify('false'),

packages/core/src/core/rstest.ts

@@ -119,6 +119,11 @@ export class Rstest implements RstestContext {
             if (existsSync(tsconfigPath)) {
               config.source.tsconfigPath = tsconfigPath;
             }
+          } else {
+            config.source.tsconfigPath = getAbsolutePath(
+              config.root,
+              config.source.tsconfigPath,
+            );
           }
           return {
             configFilePath: project.configFilePath,