Rename jet -> kotlin in compiler-tests (except resolve)

Move test-related code to org.jetbrains.kotlin.test, also move some tests to
packages with better names

compiler/tests/org/jetbrains/kotlin/runtime/ProgressionUtilTest.java

@@ -0,0 +1,116 @@
+/*
+ * Copyright 2010-2013 JetBrains s.r.o.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.jetbrains.kotlin.runtime;
+
+import com.intellij.testFramework.UsefulTestCase;
+import org.jetbrains.kotlin.codegen.forTestCompile.ForTestCompileRuntime;
+
+import java.lang.reflect.Method;
+import java.net.URL;
+import java.net.URLClassLoader;
+
+public class ProgressionUtilTest extends UsefulTestCase {
+    private static final int MAX = Integer.MAX_VALUE;
+    private static final int MIN = Integer.MIN_VALUE;
+
+    private Method intMethod;
+    private Method longMethod;
+
+    @Override
+    protected void setUp() throws Exception {
+        super.setUp();
+        ClassLoader classLoader = new URLClassLoader(new URL[] {ForTestCompileRuntime.runtimeJarForTests().toURI().toURL()}, null);
+        Class<?> progressionUtil = classLoader.loadClass("kotlin.internal.InternalPackage");
+        this.intMethod = progressionUtil.getMethod("getProgressionFinalElement", int.class, int.class, int.class);
+        this.longMethod = progressionUtil.getMethod("getProgressionFinalElement", long.class, long.class, long.class);
+    }
+
+    @Override
+    protected void tearDown() throws Exception {
+        this.intMethod = null;
+        this.longMethod = null;
+        super.tearDown();
+    }
+
+    private void doTest(int start, int end, int increment, int expected) throws Exception {
+        Object actualInt = intMethod.invoke(null, start, end, increment);
+        assertEquals(expected, actualInt);
+
+        Object actualLong = longMethod.invoke(null, (long) start, (long) end, (long) increment);
+        assertEquals((long) expected, actualLong);
+    }
+
+    private static final int[] INTERESTING = new int[]{ MIN, MIN / 2, -239, -23, -1, 0, 1, 42, 239, MAX / 2, MAX };
+
+    public void testGetFinalElement() throws Exception {
+        // start == end
+        for (int x : INTERESTING) {
+            for (int increment : INTERESTING) if (increment != 0) {
+                doTest(x, x, increment, x);
+            }
+        }
+
+        // increment == 1
+        for (int start = 0; start < INTERESTING.length; start++) {
+            for (int end = start; end < INTERESTING.length; end++) {
+                doTest(INTERESTING[start], INTERESTING[end], 1, INTERESTING[end]);
+            }
+        }
+
+        // increment == -1
+        for (int end = 0; end < INTERESTING.length; end++) {
+            for (int start = end; start < INTERESTING.length; start++) {
+                doTest(INTERESTING[start], INTERESTING[end], -1, INTERESTING[end]);
+            }
+        }
+
+        // end == MAX
+        doTest(0, MAX, MAX, MAX);
+        doTest(0, MAX, MAX / 2, MAX - 1);
+        doTest(MIN + 1, MAX, MAX, MAX);
+        doTest(MAX - 7, MAX, 3, MAX - 1);
+        doTest(MAX - 7, MAX, MAX, MAX - 7);
+
+        // end == MIN
+        doTest(0, MIN, MIN, MIN);
+        doTest(0, MIN, MIN / 2, MIN);
+        doTest(MAX, MIN, MIN, -1);
+        doTest(MIN + 7, MIN, -3, MIN + 1);
+        doTest(MIN + 7, MIN, MIN, MIN + 7);
+
+        // Small tests
+        for (int start = -10; start < 10; start++) {
+            for (int end = -10; end < 10; end++) {
+                for (int increment = -20; increment < 20; increment++) {
+                    // Cut down incorrect test data
+                    if (increment == 0) continue;
+                    if ((increment > 0) != (start <= end)) continue;
+
+                    // Iterate over the progression and obtain the expected result
+                    int x = start;
+                    while (true) {
+                        int next = x + increment;
+                        if (next < Math.min(start, end) || next > Math.max(start, end)) break;
+                        x = next;
+                    }
+
+                    doTest(start, end, increment, x);
+                }
+            }
+        }
+    }
+}