From 19465fcc8f888ae3a812796134993be3e388e47e Mon Sep 17 00:00:00 2001
From: vmihaylov <vasiliy.mikhailov@gmail.com>
Date: Mon, 29 Jun 2026 22:52:11 +0300
Subject: [PATCH] Honor --skip-validate-spec=false instead of always disabling
 spec validation

When --skip-validate-spec is provided, Generate unconditionally called
setValidateSpec(false), ignoring the value, so --skip-validate-spec false
behaved like true. Pass the actual flag value via setValidateSpec(!skipValidateSpec).

Signed-off-by: vmihaylov <vasiliy.mikhailov@gmail.com>
---
 .../openapitools/codegen/cmd/Generate.java    |  2 +-
 .../codegen/cmd/GenerateTest.java             | 28 +++++++++++++++++++
 2 files changed, 29 insertions(+), 1 deletion(-)

diff --git a/modules/openapi-generator-cli/src/main/java/org/openapitools/codegen/cmd/Generate.java b/modules/openapi-generator-cli/src/main/java/org/openapitools/codegen/cmd/Generate.java
index 2907c43afa68..b141bfb3202c 100644
--- a/modules/openapi-generator-cli/src/main/java/org/openapitools/codegen/cmd/Generate.java
+++ b/modules/openapi-generator-cli/src/main/java/org/openapitools/codegen/cmd/Generate.java
@@ -381,7 +381,7 @@ public void execute() {
 
         // now override with any specified parameters
         if (skipValidateSpec != null) {
-            configurator.setValidateSpec(false);
+            configurator.setValidateSpec(!skipValidateSpec);
         }
 
         if (verbose != null) {
diff --git a/modules/openapi-generator-cli/src/test/java/org/openapitools/codegen/cmd/GenerateTest.java b/modules/openapi-generator-cli/src/test/java/org/openapitools/codegen/cmd/GenerateTest.java
index af1e8342b805..b5be439f70ef 100644
--- a/modules/openapi-generator-cli/src/test/java/org/openapitools/codegen/cmd/GenerateTest.java
+++ b/modules/openapi-generator-cli/src/test/java/org/openapitools/codegen/cmd/GenerateTest.java
@@ -457,4 +457,32 @@ public void testQuietShort() {
     public void testNPEWithInvalidSpecFile() {
         setupAndRunTest("-i", "src/test/resources/npe-test.yaml", "-g", "java", "-o", "src/main/java", false, null);
     }
+
+    @Test
+    public void testSkipValidateSpecTrue() {
+        setupAndRunGenericTest("--skip-validate-spec");
+        verify(configurator).setValidateSpec(false);
+    }
+
+    @Test
+    public void testSkipValidateSpecFalse() throws NoSuchFieldException, IllegalAccessException {
+        Cli.CliBuilder<Runnable> builder =
+                Cli.<Runnable>builder("openapi-generator-cli")
+                        .withCommands(Generate.class);
+        Generate generate = (Generate) builder.build().parse(
+                new String[]{"generate", "-g", "java", "-o", "src/main/java", "-i", "src/test/resources/swagger.yaml"});
+        java.lang.reflect.Field field = Generate.class.getDeclaredField("skipValidateSpec");
+        field.setAccessible(true);
+        field.set(generate, false);
+        generate.configurator = configurator;
+        generate.generator = generator;
+        try {
+            generate.run();
+        } finally {
+            verify(configurator).setInputSpec("src/test/resources/swagger.yaml");
+            verify(configurator).setGeneratorName("java");
+            verify(configurator).setOutputDir("src/main/java");
+        }
+        verify(configurator).setValidateSpec(true);
+    }
 }