Add kotlin language server support (#1725)

* Add kotlin languageserver linter definition
* Added kotlin languageserver references in docs, fix missing !! on other linters
* Added Vader tests for root path detection in Kotlin Language Server

1 files changed, 25 insertions, 0 deletions

diff --git a/test/test_kotlin_languageserver_path_detection.vader b/test/test_kotlin_languageserver_path_detection.vader
new file mode 100644
index 00000000..36e6368e
--- /dev/null
+++ b/test/test_kotlin_languageserver_path_detection.vader
@@ -0,0 +1,25 @@
+Before:
+  call ale#test#SetDirectory('/testplugin/test')
+  runtime ale_linters/kotlin/languageserver.vim
+
+After:
+  call ale#test#RestoreDirectory()
+  call ale#linter#Reset()
+
+Execute(Detect root of gradle project with build.gradle correctly):
+  call ale#test#SetFilename('gradle-test-files/build-gradle-project/src/main/kotlin/dummy.kt')
+  AssertEqual
+  \ ale#path#Simplify(g:dir . '/gradle-test-files/build-gradle-project'),
+  \ ale_linters#kotlin#languageserver#GetProjectRoot(bufnr(''))
+
+Execute(Detect root of maven project with pom.xml correctly):
+  call ale#test#SetFilename('maven-test-files/maven-kotlin-project/src/main/kotlin/dummy.kt')
+  AssertEqual
+  \ ale#path#Simplify(g:dir . '/maven-test-files/maven-kotlin-project'),
+  \ ale_linters#kotlin#languageserver#GetProjectRoot(bufnr(''))
+
+Execute(Detect no root in case of non maven/gradle project):
+  call ale#test#SetFilename('gradle-test-files/non-gradle-project/src/main/kotlin/dummy.kt')
+  AssertEqual
+  \ '',
+  \ ale_linters#kotlin#languageserver#GetProjectRoot(bufnr(''))