From d9cd3d33c8f2b769da922d355373d466f8b30704 Mon Sep 17 00:00:00 2001
From: "Alex Lam S.L" <alexlamsl@gmail.com>
Date: Sat, 28 Dec 2019 20:26:15 +0000
Subject: enhance `evaluate` (#3649)

---
 test/compress/hoist_props.js |  2 +-
 test/compress/numbers.js     | 82 ++++++++++++++++++++++++++++++++++++++++++--
 2 files changed, 81 insertions(+), 3 deletions(-)

(limited to 'test/compress')

diff --git a/test/compress/hoist_props.js b/test/compress/hoist_props.js
index 0d8e771a..c647ccc1 100644
--- a/test/compress/hoist_props.js
+++ b/test/compress/hoist_props.js
@@ -664,7 +664,7 @@ issue_2519: {
     }
     expect: {
         function testFunc() {
-            return 1 * ((6 + 5) / 2);
+            return +((6 + 5) / 2);
         }
         console.log(testFunc());
     }
diff --git a/test/compress/numbers.js b/test/compress/numbers.js
index 673ce23a..c432a435 100644
--- a/test/compress/numbers.js
+++ b/test/compress/numbers.js
@@ -91,7 +91,7 @@ evaluate_1: {
     expect: {
         console.log(
             x + 1 + 2,
-            1 * x * 2,
+            2 * x,
             +x + 1 + 2,
             1 + x + 2 + 3,
             3 | x,
@@ -173,7 +173,7 @@ evaluate_2: {
         var x = "42", y = null;
         [
             x + 1 + 2,
-            1 * x * 2,
+            2 * x,
             +x + 1 + 2,
             1 + x + 2 + 3,
             3 | x,
@@ -979,3 +979,81 @@ unsafe_math_swap_constant: {
     }
     expect_stdout: "6 6 7 6 6 8 9 10"
 }
+
+identity_1: {
+    options = {
+        evaluate: true,
+    }
+    input: {
+        0 + a;
+        a + 0;
+        0 - a;
+        a - 0;
+        1 * a;
+        a * 1;
+        1 / a;
+        a / 1;
+    }
+    expect: {
+        0 + a;
+        a + 0;
+        -a;
+        +a;
+        +a;
+        +a;
+        1 / a;
+        +a;
+    }
+}
+
+identity_2: {
+    options = {
+        evaluate: true,
+    }
+    input: {
+        0 + !a;
+        !a + 0;
+        0 - !a;
+        !a - 0;
+        1 * !a;
+        !a * 1;
+        1 / !a;
+        !a / 1;
+    }
+    expect: {
+        +!a;
+        +!a;
+        -!a;
+        +!a;
+        +!a;
+        +!a;
+        1 / !a;
+        +!a;
+    }
+}
+
+identity_3: {
+    options = {
+        evaluate: true,
+    }
+    input: {
+        0 + --a;
+        --a + 0;
+        0 - --a;
+        --a - 0;
+        1 * --a;
+        --a * 1;
+        1 / --a;
+        --a / 1;
+    }
+    expect: {
+        --a;
+        --a;
+        - --a;
+        --a;
+        --a;
+        --a;
+        1 / --a;
+        --a;
+    }
+}
-- 
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