From 8b405faa5790304f39e9a1d3455f25ce6c9b6ddf Mon Sep 17 00:00:00 2001
From: TL <43626236+OnlyTL@users.noreply.github.com>
Date: Thu, 7 Dec 2023 16:52:07 +0800
Subject: [PATCH] fix: ineffective single-character queries in labelSelector
 (#5007)
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**What this PR does / why we need it:**
This PR resolves the reported bug in issue #5001,

**Which issue(s) this PR fixes:**

Fixes [#5001](https://github.com/halo-dev/halo/issues/5001)

```release-note
修复 labelSelector 单字符值查询无效的问题
```
---
 .../java/run/halo/app/extension/router/selector/Operator.java | 2 +-
 .../run/halo/app/extension/router/selector/OperatorTest.java  | 4 +++-
 2 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/api/src/main/java/run/halo/app/extension/router/selector/Operator.java b/api/src/main/java/run/halo/app/extension/router/selector/Operator.java
index 04f748094..cab3dc127 100644
--- a/api/src/main/java/run/halo/app/extension/router/selector/Operator.java
+++ b/api/src/main/java/run/halo/app/extension/router/selector/Operator.java
@@ -12,7 +12,7 @@ public enum Operator implements Converter<String, SelectorCriteria> {
         public SelectorCriteria convert(@Nullable String selector) {
             if (preFlightCheck(selector, 3)) {
                 var i = selector.indexOf(getOperator());
-                if (i > 0 && (i + getOperator().length()) < selector.length() - 1) {
+                if (i > 0 && (i + getOperator().length()) <= selector.length() - 1) {
                     String key = selector.substring(0, i);
                     String value = selector.substring(i + getOperator().length());
                     return new SelectorCriteria(key, this, Set.of(value));
diff --git a/api/src/test/java/run/halo/app/extension/router/selector/OperatorTest.java b/api/src/test/java/run/halo/app/extension/router/selector/OperatorTest.java
index ee349b4d1..ae426277c 100644
--- a/api/src/test/java/run/halo/app/extension/router/selector/OperatorTest.java
+++ b/api/src/test/java/run/halo/app/extension/router/selector/OperatorTest.java
@@ -27,6 +27,8 @@ class OperatorTest {
             new TestCase("name=", Equals, null),
             new TestCase("name=value", Equals,
                 new SelectorCriteria("name", Equals, Set.of("value"))),
+            new TestCase("name=v", Equals, 
+                new SelectorCriteria("name", Equals, Set.of("v"))),
 
             new TestCase("", NotEquals, null),
             new TestCase("=", NotEquals, null),
@@ -59,4 +61,4 @@ class OperatorTest {
             assertEquals(testCase.expected(), testCase.converter().convert(testCase.source()));
         });
     }
-}
\ No newline at end of file
+}