Add preliminary support for inline Strings.

selfie-runner-junit5/src/test/kotlin/com/diffplug/selfie/junit5/InlineStringTest.kt

@@ -0,0 +1,48 @@
+/*
+ * Copyright (C) 2023 DiffPlug
+ *
+ * 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
+ *
+ *     https://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 com.diffplug.selfie.junit5
+
+import io.kotest.matchers.shouldBe
+import kotlin.test.Test
+import org.junit.jupiter.api.MethodOrderer
+import org.junit.jupiter.api.Order
+import org.junit.jupiter.api.TestMethodOrder
+
+/** Write-only test which asserts adding and removing snapshots results in same-class GC. */
+@TestMethodOrder(MethodOrderer.OrderAnnotation::class)
+// @DisableIfTestFails don't disable if test fails because we *have* to run cleanup
+class InlineStringTest : Harness("undertest-junit5") {
+  @Test @Order(1)
+  fun toBe_TODO() {
+    ut_mirror().lineWith("@Ignore").setContent("//@Ignore")
+    ut_mirror().lineWith("expectSelfie").setContent("    expectSelfie(\"Hello world\").toBe_TODO()")
+    gradleReadSSFail()
+  }
+
+  @Test @Order(2)
+  fun toBe_write() {
+    gradleWriteSS()
+    ut_mirror().lineWith("expectSelfie").content() shouldBe
+        "    expectSelfie(\"Hello world\").toBe(\"Hello world\")"
+    gradleReadSS()
+  }
+
+  @Test @Order(3)
+  fun cleanup() {
+    ut_mirror().lineWith("expectSelfie").setContent("    expectSelfie(\"Hello world\").toBe_TODO()")
+    ut_mirror().lineWith("//@Ignore").setContent("@Ignore")
+  }
+}

undertest-junit5/src/test/kotlin/undertest/junit5/UT_InlineStringTest.kt

@@ -0,0 +1,13 @@
+package undertest.junit5
+// spotless:off
+import com.diffplug.selfie.Selfie.expectSelfie
+import kotlin.test.Ignore
+import kotlin.test.Test
+// spotless:on
+
+@Ignore
+class UT_InlineStringTest {
+  @Test fun singleLine() {
+    expectSelfie("Hello world").toBe_TODO()
+  }
+}