KT-1530 : stdlib should include assert and require functions to simplify precondition checking

2012-03-07 13:16:02 -05:00
parent 87370ba3bd
commit c9d6b8462d
2 changed files with 97 additions and 0 deletions
@@ -0,0 +1,49 @@
+package test.collections
+
+import junit.framework.TestCase
+import kotlin.test.*
+import java.lang.IllegalArgumentException
+
+class PreconditionsTest() : TestCase() {
+
+    fun testPassingRequire() {
+        require(true)
+    }
+
+    fun testFailingRequire() {
+        val error = fails {
+            require(false)
+        }
+        if(error is IllegalArgumentException) {
+            assertNull(error.getMessage())
+        } else {
+            fail("Invalid exception type: "+error)
+        }
+    }
+
+    fun testPassingRequireWithMessage() {
+        require(true, "Hello")
+    }
+
+    fun testFailingRequireWithMessage() {
+        val error = fails {
+            require(false, "Hello")
+        }
+        if(error is IllegalArgumentException) {
+            assertEquals("Hello", error.getMessage())
+        } else {
+            fail("Invalid exception type: "+error)
+        }
+    }
+
+//    // Not sure why the assert method is not being resolved.
+//    fun ignorePassingAssert() {
+//        assert(true)
+//    }
+//
+//    fun ignoreFailingAssert() {
+//        failsWith<AssertionError> {
+//            assert(false)
+//        }
+//    }
+}