Fix suppressing of companion when it implements some interface

4 files changed, 31 insertions, 1 deletions

diff --git a/core/src/main/kotlin/Kotlin/DocumentationBuilder.kt b/core/src/main/kotlin/Kotlin/DocumentationBuilder.kt
index 24840a9d..0f6f217e 100644
--- a/core/src/main/kotlin/Kotlin/DocumentationBuilder.kt
+++ b/core/src/main/kotlin/Kotlin/DocumentationBuilder.kt
@@ -575,7 +575,8 @@ class DocumentationBuilder
                 ClassMember(it, inheritedLinkKind = RefKind.InheritedCompanionObjectMember)
             }
 
-            if (companionObjectDescriptor.getAllSuperclassesWithoutAny().isNotEmpty()) {
+            if (companionObjectDescriptor.getAllSuperclassesWithoutAny().isNotEmpty()
+                    || companionObjectDescriptor.getSuperInterfaces().isNotEmpty()) {
                 result += ClassMember(companionObjectDescriptor)
             }
         }
diff --git a/core/src/test/kotlin/format/MarkdownFormatTest.kt b/core/src/test/kotlin/format/MarkdownFormatTest.kt
index f572922c..d2ab5b5c 100644
--- a/core/src/test/kotlin/format/MarkdownFormatTest.kt
+++ b/core/src/test/kotlin/format/MarkdownFormatTest.kt
@@ -396,6 +396,10 @@ class MarkdownFormatTest {
         verifyMarkdownNodeByName("notPublishedTypeAliasAutoExpansion", "foo", includeNonPublic = false)
     }
 
+    @Test fun companionImplements() {
+        verifyMarkdownNodeByName("companionImplements", "Foo")
+    }
+
     private fun buildMultiplePlatforms(path: String): DocumentationModule {
         val module = DocumentationModule("test")
         val options = DocumentationOptions("", "html", generateIndexPages = false, noStdlibLink = true)
diff --git a/core/testdata/format/companionImplements.kt b/core/testdata/format/companionImplements.kt
new file mode 100644
index 00000000..154ef9b1
--- /dev/null
+++ b/core/testdata/format/companionImplements.kt
@@ -0,0 +1,9 @@
+
+interface Bar
+
+/**
+ * Correct ref [Foo.Companion]
+ */
+class Foo {
+    companion object : Bar
+}
\ No newline at end of file
diff --git a/core/testdata/format/companionImplements.md b/core/testdata/format/companionImplements.md
new file mode 100644
index 00000000..8a93ed6b
--- /dev/null
+++ b/core/testdata/format/companionImplements.md
@@ -0,0 +1,16 @@
+[test](test/index) / [Foo](test/-foo/index)
+
+# Foo
+
+`class Foo`
+
+Correct ref [Foo.Companion](test/-foo/-companion)
+
+### Types
+
+| [Companion](test/-foo/-companion) | `companion object Companion : `[`Bar`](test/-bar) |
+
+### Constructors
+
+| [&lt;init&gt;](test/-foo/-init-) | `Foo()`<br>Correct ref [Foo.Companion](test/-foo/-companion) |
+