Update KSP to 1.4.20-dev-experimental-20201222 (#94)

* Update KSP to 1.4.20-dev-experimental-20201222

This has some breaking ABI changes that require a recompilation to work with newer consumers

* Update test

* Add new required builder options

Author: ZacSweers

ksp/build.gradle

@@ -1,6 +1,6 @@
 
 buildscript {
-    ext.ksp_version='1.4.20-dev-experimental-20201204'
+    ext.ksp_version='1.4.20-dev-experimental-20201222'
 }
 
 dependencies {

ksp/src/main/kotlin/com/tschuchort/compiletesting/Ksp.kt

@@ -29,7 +29,7 @@ var KotlinCompilation.symbolProcessors: List<SymbolProcessor>
     }
 
 /**
- * The directory where generates KSP sources are written
+ * The directory where generated KSP sources are written
  */
 val KotlinCompilation.kspSourcesDir: File
     get() = kspWorkingDir.resolve("sources")
@@ -68,6 +68,12 @@ private val KotlinCompilation.kspWorkingDir: File
 private val KotlinCompilation.kspClassesDir: File
     get() = kspWorkingDir.resolve("classes")
 
+/**
+ * The directory where compiled KSP caches are written
+ */
+private val KotlinCompilation.kspCachesDir: File
+    get() = kspWorkingDir.resolve("caches")
+
 /**
  * Custom subclass of [AbstractKotlinSymbolProcessingExtension] where processors are pre-defined instead of being
  * loaded via ServiceLocator.
@@ -99,8 +105,18 @@ private class KspCompileTestingComponentRegistrar(
             return
         }
         val options = KspOptions.Builder().apply {
+            this.projectBaseDir = compilation.kspWorkingDir
+
             this.processingOptions.putAll(compilation.kspArgs)
 
+            this.cachesDir = compilation.kspCachesDir.also {
+                it.deleteRecursively()
+                it.mkdirs()
+            }
+            this.kspOutputDir = compilation.kspSourcesDir.also {
+                it.deleteRecursively()
+                it.mkdirs()
+            }
             this.classOutputDir = compilation.kspClassesDir.also {
                 it.deleteRecursively()
                 it.mkdirs()

ksp/src/test/kotlin/com/tschuchort/compiletesting/KspTest.kt

@@ -1,5 +1,6 @@
 package com.tschuchort.compiletesting
 
+import com.google.devtools.ksp.processing.Dependencies
 import com.google.devtools.ksp.processing.Resolver
 import com.google.devtools.ksp.processing.SymbolProcessor
 import com.google.devtools.ksp.symbol.KSClassDeclaration
@@ -75,6 +76,7 @@ class KspTest {
                 val genPackage = "${qName.getQualifier()}.generated"
                 val genClassName = "${qName.getShortName()}_Gen"
                 codeGenerator.createNewFile(
+                    dependencies = Dependencies.ALL_FILES,
                     packageName = genPackage,
                     fileName = genClassName
                 ).bufferedWriter(Charsets.UTF_8).use {
@@ -150,7 +152,11 @@ class KspTest {
     ) : AbstractTestSymbolProcessor() {
         override fun process(resolver: Resolver) {
             super.process(resolver)
-            codeGenerator.createNewFile(packageName, className).bufferedWriter(Charsets.UTF_8).use {
+            codeGenerator.createNewFile(
+                dependencies = Dependencies.ALL_FILES,
+                packageName = packageName,
+                fileName = className
+            ).bufferedWriter(Charsets.UTF_8).use {
                 it.write("""
                     package $packageName
                     class $className() {}