1 files changed, 42 insertions, 4 deletions

diff --git a/crates/ra_ide/src/completion/test_utils.rs b/crates/ra_ide/src/completion/test_utils.rs
index bf22452a2..1e16a43ca 100644
--- a/crates/ra_ide/src/completion/test_utils.rs
+++ b/crates/ra_ide/src/completion/test_utils.rs
@@ -5,25 +5,63 @@ use crate::{
     mock_analysis::{analysis_and_position, single_file_with_position},
     CompletionItem,
 };
+use hir::Semantics;
+use ra_syntax::{AstNode, NodeOrToken, SyntaxElement};
 
 pub(crate) fn do_completion(code: &str, kind: CompletionKind) -> Vec<CompletionItem> {
     do_completion_with_options(code, kind, &CompletionConfig::default())
 }
 
+pub(crate) fn completion_list(code: &str, kind: CompletionKind) -> String {
+    completion_list_with_options(code, kind, &CompletionConfig::default())
+}
+
 pub(crate) fn do_completion_with_options(
     code: &str,
     kind: CompletionKind,
     options: &CompletionConfig,
 ) -> Vec<CompletionItem> {
+    let mut kind_completions: Vec<CompletionItem> = get_all_completion_items(code, options)
+        .into_iter()
+        .filter(|c| c.completion_kind == kind)
+        .collect();
+    kind_completions.sort_by(|l, r| l.label().cmp(r.label()));
+    kind_completions
+}
+
+fn get_all_completion_items(code: &str, options: &CompletionConfig) -> Vec<CompletionItem> {
     let (analysis, position) = if code.contains("//-") {
         analysis_and_position(code)
     } else {
         single_file_with_position(code)
     };
-    let completions = analysis.completions(options, position).unwrap().unwrap();
-    let completion_items: Vec<CompletionItem> = completions.into();
-    let mut kind_completions: Vec<CompletionItem> =
-        completion_items.into_iter().filter(|c| c.completion_kind == kind).collect();
+    analysis.completions(options, position).unwrap().unwrap().into()
+}
+
+pub(crate) fn completion_list_with_options(
+    code: &str,
+    kind: CompletionKind,
+    options: &CompletionConfig,
+) -> String {
+    let mut kind_completions: Vec<CompletionItem> = get_all_completion_items(code, options)
+        .into_iter()
+        .filter(|c| c.completion_kind == kind)
+        .collect();
     kind_completions.sort_by_key(|c| c.label().to_owned());
     kind_completions
+        .into_iter()
+        .map(|it| format!("{} {}\n", it.kind().unwrap().tag(), it.label()))
+        .collect()
+}
+
+pub(crate) fn check_pattern_is_applicable(code: &str, check: fn(SyntaxElement) -> bool) {
+    let (analysis, pos) = single_file_with_position(code);
+    analysis
+        .with_db(|db| {
+            let sema = Semantics::new(db);
+            let original_file = sema.parse(pos.file_id);
+            let token = original_file.syntax().token_at_offset(pos.offset).left_biased().unwrap();
+            assert!(check(NodeOrToken::Token(token)));
+        })
+        .unwrap();
 }