Add tests

babel · Jan 25, 2017 · 64db587 · 64db587
1 parent bad06b9
commit 64db587
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diff --git a/packages/babel-plugin-minify-dead-code-elimination/__tests__/dead-code-elimination-test.js b/packages/babel-plugin-minify-dead-code-elimination/__tests__/dead-code-elimination-test.js
@@ -2421,4 +2421,13 @@ describe("dce-plugin", () => {
 
     expect(transform(source)).toBe(expected);
   });
+
+  it("should deopt impure expressions in if statements", () => {
+    const source = unpad(`
+      if (a.b(), true) {
+        foo();
+      }
+    `);
+    expect(transform(source)).toBe(source);
+  });
 });
diff --git a/packages/babel-preset-babili/__tests__/preset-tests.js b/packages/babel-preset-babili/__tests__/preset-tests.js
@@ -61,4 +61,18 @@ describe("preset", () => {
     `);
     expect(transform(source)).toBe(expected);
   });
+
+  it("should fix issue#385 - impure if statements with Sequence and DCE", () => {
+    const source = unpad(`
+      a = b;
+      c = d;
+      if (false) {
+        const x = y
+      }
+    `);
+    const expected = unpad(`
+      a = b, c = d;
+    `);
+    expect(transform(source)).toBe(expected);
+  });
 });