Implement 'CommonizerTarget.fileName' and limit fileName length

^KT-46856 Fixed
2021-05-21 12:03:44 +02:00
parent 0749443f7e
commit 14eca72913
3 changed files with 95 additions and 16 deletions
@@ -0,0 +1,67 @@
+/*
+ * Copyright 2010-2021 JetBrains s.r.o. and Kotlin Programming Language contributors.
+ * Use of this source code is governed by the Apache 2.0 license that can be found in the license/LICENSE.txt file.
+ */
+
+package org.jetbrains.kotlin.commonizer
+
+import org.jetbrains.kotlin.commonizer.HierarchicalCommonizerOutputLayout.fileName
+import org.jetbrains.kotlin.commonizer.HierarchicalCommonizerOutputLayout.maxFileNameLength
+import org.junit.Rule
+import org.junit.rules.TemporaryFolder
+import kotlin.test.Test
+import kotlin.test.assertEquals
+import kotlin.test.assertTrue
+
+class CommonizerTargetFileNameTest {
+
+    private val longCommonizerTarget = parseCommonizerTarget(
+        buildString {
+            append("(")
+            append(
+                sequence {
+                    var i = 0
+                    while (true) {
+                        yield(i.toString())
+                        i++
+                    }
+                }.take(maxFileNameLength).joinToString(", ")
+            )
+            append(")")
+        }
+    )
+
+    @get:Rule
+    val temporaryFolder = TemporaryFolder()
+
+    @Test
+    fun `small targets will use identityString`() {
+        val target = parseCommonizerTarget("((a, b), c)")
+        assertEquals(target.identityString, target.fileName)
+    }
+
+    @OptIn(ExperimentalStdlibApi::class)
+    @Test
+    fun `longCommonizerTarget respect maximum fileName length`() {
+        assertTrue(
+            longCommonizerTarget.identityString.length > maxFileNameLength,
+            "Expected test target's identityString to exceed maxFileNameLength"
+        )
+
+        assertEquals(
+            longCommonizerTarget.fileName.length, maxFileNameLength,
+            "Expected test target's fileName to be exactly match the maximum"
+        )
+    }
+
+    @Test
+    fun `longCommonizerTarget fileName can create new file`() {
+        val longCommonizerTargetFile = temporaryFolder.root.resolve(longCommonizerTarget.fileName)
+        assertTrue(longCommonizerTargetFile.createNewFile(), "Expected being able to create file $longCommonizerTargetFile")
+        longCommonizerTargetFile.writeText(longCommonizerTarget.identityString)
+        assertEquals(
+            longCommonizerTarget, parseCommonizerTarget(longCommonizerTargetFile.readText()),
+            "Expected being able to read and write to $longCommonizerTargetFile"
+        )
+    }
+}