add test fixtures

compiler/packages/babel-plugin-react-compiler/package.json

@@ -68,4 +68,4 @@
     "url": "git+https://github.com/facebook/react.git",
     "directory": "compiler/packages/babel-plugin-react-compiler"
   }
-}
+}

compiler/packages/babel-plugin-react-compiler/src/__tests__/fixtures/compiler/constant-propagation-terminal-unary.expect.md

@@ -0,0 +1,86 @@
+
+## Input
+
+```javascript
+import {Stringify} from 'shared-runtime';
+
+function foo() {
+  let _b;
+  const b = true;
+  if (!b) {
+    _b = 'bar';
+  } else {
+    _b = 'baz';
+  }
+
+  return (
+    <Stringify
+      value={{
+        _b,
+        b0: !true,
+        n0: !0,
+        n1: !1,
+        n2: !2,
+        n3: !-1,
+        s0: !'',
+        s1: !'a',
+        s2: !'ab',
+        u: !undefined,
+        n: !null,
+      }}
+    />
+  );
+}
+
+export const FIXTURE_ENTRYPOINT = {
+  fn: foo,
+  params: [],
+  isComponent: false,
+};
+
+```
+
+## Code
+
+```javascript
+import { c as _c } from "react/compiler-runtime";
+import { Stringify } from "shared-runtime";
+
+function foo() {
+  const $ = _c(1);
+  let t0;
+  if ($[0] === Symbol.for("react.memo_cache_sentinel")) {
+    t0 = (
+      <Stringify
+        value={{
+          _b: "baz",
+          b0: false,
+          n0: true,
+          n1: false,
+          n2: false,
+          n3: !-1,
+          s0: true,
+          s1: false,
+          s2: false,
+          u: !undefined,
+          n: true,
+        }}
+      />
+    );
+    $[0] = t0;
+  } else {
+    t0 = $[0];
+  }
+  return t0;
+}
+
+export const FIXTURE_ENTRYPOINT = {
+  fn: foo,
+  params: [],
+  isComponent: false,
+};
+
+```
+      
+### Eval output
+(kind: ok) <div>{"value":{"_b":"baz","b0":false,"n0":true,"n1":false,"n2":false,"n3":false,"s0":true,"s1":false,"s2":false,"u":true,"n":true}}</div>

compiler/packages/babel-plugin-react-compiler/src/__tests__/fixtures/compiler/constant-propagation-terminal-unary.js

@@ -0,0 +1,31 @@
+import {Stringify} from 'shared-runtime';
+
+function foo() {
+  let _b;
+  const b = true;
+  _b = !b ? 'bar' : 'baz';
+
+  return (
+    <Stringify
+      value={{
+        _b,
+        b0: !true,
+        n0: !0,
+        n1: !1,
+        n2: !2,
+        n3: !-1,
+        s0: !'',
+        s1: !'a',
+        s2: !'ab',
+        u: !undefined,
+        n: !null,
+      }}
+    />
+  );
+}
+
+export const FIXTURE_ENTRYPOINT = {
+  fn: foo,
+  params: [],
+  isComponent: false,
+};