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test(ivy): support chdir() on the compiler's filesystem abstraction (#33828)

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This commit adds the ability to change directories using the compiler's
internal filesystem abstraction. This is a prerequisite for writing tests
which are sensitive to the current working directory.

In addition to supporting the `chdir()` operation, this commit also fixes
`getDefaultLibLocation()` for mock filesystems to not assume `node_modules`
is in the current directory, but to resolve it similarly to how Node does
by progressively looking higher in the directory tree.

PR Close #33828
This commit is contained in:
Alex Rickabaugh
2019-11-13 14:45:46 -08:00
parent 6bf2531b19
commit 51720745dd
6 changed files with 38 additions and 4 deletions
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7
packages/compiler-cli/test/ngtsc/env.ts
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@ -35,7 +35,8 @@ export class NgtscTestEnvironment {
/**
* Set up a new testing environment.
*/
static setup(files?: Folder): NgtscTestEnvironment {
static setup(files?: Folder, workingDir: AbsoluteFsPath = absoluteFrom('/')):
NgtscTestEnvironment {
const fs = getFileSystem();
if (files !== undefined && fs instanceof MockFileSystem) {
fs.init(files);
@ -44,7 +45,8 @@ export class NgtscTestEnvironment {
const host = new AugmentedCompilerHost(fs);
setWrapHostForTest(makeWrapHost(host));
const env = new NgtscTestEnvironment(fs, fs.resolve('/built'), absoluteFrom('/'));
const env = new NgtscTestEnvironment(fs, fs.resolve('/built'), workingDir);
fs.chdir(workingDir);
env.write(absoluteFrom('/tsconfig-base.json'), `{
"compilerOptions": {
@ -54,7 +56,6 @@ export class NgtscTestEnvironment {
"noImplicitAny": true,
"strictNullChecks": true,
"outDir": "built",
"rootDir": ".",
"baseUrl": ".",
"declaration": true,
"target": "es5",