Add unit test for request change filter

diff --git a/src/test/kotlin/net/pterodactylus/sone/template/RequestChangeFilterTest.kt b/src/test/kotlin/net/pterodactylus/sone/template/RequestChangeFilterTest.kt
new file mode 100644 (file)
index 0000000..d56bdc5
--- /dev/null
+++ b/src/test/kotlin/net/pterodactylus/sone/template/RequestChangeFilterTest.kt
@@ -0,0 +1,71 @@
+package net.pterodactylus.sone.template
+
+import freenet.support.api.HTTPRequest
+import net.pterodactylus.sone.Matchers.matchesRegex
+import net.pterodactylus.sone.test.mock
+import net.pterodactylus.sone.test.whenever
+import net.pterodactylus.sone.web.page.FreenetRequest
+import net.pterodactylus.util.template.TemplateContext
+import org.hamcrest.MatcherAssert.assertThat
+import org.hamcrest.Matchers.equalTo
+import org.junit.Before
+import org.junit.Test
+import org.mockito.ArgumentMatchers.anyString
+import java.net.URI
+
+/**
+ * Unit test for [RequestChangeFilter].
+ */
+class RequestChangeFilterTest {
+
+       private val filter = RequestChangeFilter()
+       private val templateContext = mock<TemplateContext>()
+       private val freenetRequest = mock<FreenetRequest>()
+       private val httpRequest = mock<HTTPRequest>()
+       private val parameters = mutableMapOf<String, String>()
+
+       @Before
+       fun setupFreenetRequest() {
+               whenever(freenetRequest.httpRequest).thenReturn(httpRequest)
+               whenever(freenetRequest.httpRequest.parameterNames).thenAnswer { parameters.keys }
+               whenever(freenetRequest.httpRequest.getParam(anyString())).thenAnswer { parameters[it.arguments[0]] }
+       }
+
+       @Test
+       fun `filter correctly appends parameter to request URL without parameters`() {
+               whenever(freenetRequest.uri).thenReturn(URI("/some/path.html"))
+               val uri = filter.format(templateContext, freenetRequest, mapOf("name" to "name", "value" to "value")) as URI
+               assertThat(uri, equalTo(URI("/some/path.html?name=value")))
+       }
+
+       @Test
+       fun `filter cuts off old query`() {
+               whenever(freenetRequest.uri).thenReturn(URI("/some/path.html?foo=bar"))
+               val uri = filter.format(templateContext, freenetRequest, mapOf("name" to "name", "value" to "value")) as URI
+               assertThat(uri, equalTo(URI("/some/path.html?name=value")))
+       }
+
+       @Test
+       fun `filter correctly appends parameter to request URL with parameters`() {
+               parameters["foo"] = "bar"
+               whenever(freenetRequest.uri).thenReturn(URI("/some/path.html"))
+               val uri = filter.format(templateContext, freenetRequest, mapOf("name" to "name", "value" to "value")) as URI
+               assertThat(uri.toString(), matchesRegex("/some/path.html\\?(foo=bar&name=value|name=value&foo=bar)"))
+       }
+
+       @Test
+       fun `filter overwrites existing parameter value`() {
+               parameters["name"] = "old"
+               whenever(freenetRequest.uri).thenReturn(URI("/some/path.html"))
+               val uri = filter.format(templateContext, freenetRequest, mapOf("name" to "name", "value" to "value")) as URI
+               assertThat(uri, equalTo(URI("/some/path.html?name=value")))
+       }
+
+       @Test
+       fun `filter correctly encodes characters`() {
+               whenever(freenetRequest.uri).thenReturn(URI("/some/path.html"))
+               val uri = filter.format(templateContext, freenetRequest, mapOf("name" to "name", "value" to " välue")) as URI
+               assertThat(uri, equalTo(URI("/some/path.html?name=+v%C3%A4lue")))
+       }
+
+}