add unique map test

UrbanCompass · Sep 4, 2018 · 5090069 · 5090069
1 parent ea1fa1e
commit 5090069
Showing 1 changed file with 13 additions and 0 deletions.
diff --git a/SnailTests/VariableTests.swift b/SnailTests/VariableTests.swift
@@ -65,6 +65,19 @@ class VariableTests: XCTestCase {
         XCTAssertEqual(subject.value.count, subjectCharactersCount)
     }
 
+    func testUniqueFireCounts() {
+        let subject = Unique("one")
+        var firedCount = 0
+
+        subject.map { $0.count }.asObservable().subscribe(onNext: { _ in
+            firedCount += 1
+        })
+
+        subject.value = "two"
+
+        XCTAssertTrue(firedCount == 1)
+    }
+
     func testMapToVoid() {
         let subject = Variable("initial")
         var fired = false