From f2ad54267945ed96f4e84ade21af262c6ffd1d23 Mon Sep 17 00:00:00 2001
From: "Alex Lam S.L" <alexlamsl@gmail.com>
Date: Mon, 11 Dec 2017 18:11:09 +0800
Subject: fix `collapse_vars` on `switch` (#2578)

---
 test/compress/collapse_vars.js | 58 +++++++++++++++++++++++++++++++++++++++++-
 1 file changed, 57 insertions(+), 1 deletion(-)

(limited to 'test/compress/collapse_vars.js')

diff --git a/test/compress/collapse_vars.js b/test/compress/collapse_vars.js
index ab86c6b4..2136b2f0 100644
--- a/test/compress/collapse_vars.js
+++ b/test/compress/collapse_vars.js
@@ -1749,7 +1749,7 @@ for_init: {
     }
 }
 
-switch_case: {
+switch_case_1: {
     options = {
         collapse_vars: true,
         unused: true,
@@ -1777,6 +1777,62 @@ switch_case: {
     }
 }
 
+switch_case_2: {
+    options = {
+        collapse_vars: true,
+    }
+    input: {
+        var a = 1, b = 2;
+        switch (b++) {
+          case b:
+            var c = a;
+            var a;
+            break;
+        }
+        console.log(a);
+    }
+    expect: {
+        var a = 1, b = 2;
+        switch (b++) {
+          case b:
+            var c = a;
+            var a;
+            break;
+        }
+        console.log(a);
+    }
+    expect_stdout: "1"
+}
+
+switch_case_3: {
+    options = {
+        collapse_vars: true,
+    }
+    input: {
+        var a = 1, b = 2;
+        switch (a) {
+          case a:
+            var b;
+            break;
+          case b:
+            break;
+        }
+        console.log(b);
+    }
+    expect: {
+        var a = 1, b = 2;
+        switch (a) {
+          case a:
+            var b;
+            break;
+          case b:
+            break;
+        }
+        console.log(b);
+    }
+    expect_stdout: "2"
+}
+
 issue_27: {
     options = {
         collapse_vars: true,
-- 
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