test(custom-variable): add hasVariable method and corresponding test #51

Add a new method to the CustomVariable class to check if a given content string contains any custom variables. The method uses a regex to match the variable syntax and returns true if any matches are found.

Also, create a new test file, CustomVariableTest.kt, to test the hasVariable method. The test ensures that the method correctly identifies when a content string contains a valid custom variable and when it does not.

Author: phodal

src/main/kotlin/cc/unitmesh/devti/custom/variable/CustomVariable.kt

@@ -15,5 +15,9 @@ enum class CustomVariable(val variable: String, val description: String) {
 
     companion object {
         fun all(): List<CustomVariable> = values().toList()
+
+        fun hasVariable(content: String): Boolean {
+            return all().any { content.contains("\${${it.variable}}") }
+        }
     }
 }

src/test/kotlin/cc/unitmesh/devti/custom/variable/CustomVariableTest.kt

@@ -0,0 +1,13 @@
+package cc.unitmesh.devti.custom.variable
+
+import io.kotest.matchers.shouldBe
+import org.junit.Test
+
+
+class CustomVariableTest {
+    @Test
+    fun should_parse_variable_from_content() {
+        CustomVariable.hasVariable("解释一下代码：\${selection}") shouldBe true
+        CustomVariable.hasVariable("解释一下代码：\${selection") shouldBe false
+    }
+}