🐛 Fix tests on windows (#18)

* Update Gradle to 6.6.1

* Fix line endings in test assertions for Windows

On Windows, tests create files with CR/LF line endings, whereas the assertions are based on LF.

gradle/wrapper/gradle-wrapper.properties

@@ -1,5 +1,5 @@
 #Fri May 01 20:33:27 CEST 2020
-distributionUrl=https\://services.gradle.org/distributions/gradle-6.1-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-6.6.1-all.zip
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStorePath=wrapper/dists

src/test/groovy/com/github/roroche/plantuml/assertions/GrvFileHasContentAssertion.groovy

@@ -32,9 +32,9 @@ class GrvFileHasContentAssertion implements Assertion {
     @Override
     void check() throws Exception {
         assertThat(
-                file.text
+                file.text.replace("\r\n", "\n")
         ).isEqualTo(
-                expectedContent
+                expectedContent.replace("\r\n", "\n")
         )
     }
 }

src/test/kotlin/com/github/roroche/plantuml/assertions/DiagramHasContentAssertion.kt

@@ -19,7 +19,7 @@ class DiagramHasContentAssertion(
      */
     override fun check() {
         assertThat(
-            diagram.content()
-        ).isEqualTo(expectedContent)
+            diagram.content().replace("\r\n", "\n")
+        ).isEqualTo(expectedContent.replace("\r\n", "\n"))
     }
 }

src/test/kotlin/com/github/roroche/plantuml/assertions/KtFileHasContentAssertion.kt

@@ -41,9 +41,9 @@ class KtFileHasContentAssertion(
      */
     override fun check() {
         assertThat(
-            file.readText()
+            file.readText().replace("\r\n", "\n")
         ).isEqualTo(
-            expectedContent
+            expectedContent.replace("\r\n", "\n")
         )
     }
 }