Add search terms parser + tests

app/src/test/kotlin/utils/SearchTermsParserKtTest.kt

@@ -0,0 +1,39 @@
+package be.simplenotes.app.utils
+
+import be.simplenotes.search.SearchTerms
+import org.assertj.core.api.Assertions.assertThat
+import org.junit.jupiter.params.ParameterizedTest
+import org.junit.jupiter.params.provider.MethodSource
+import java.util.stream.Stream
+
+internal class SearchTermsParserKtTest {
+
+    private fun createResult(
+        input: String,
+        title: String? = null,
+        tag: String? = null,
+        content: String? = null,
+    ): Pair<String, SearchTerms> = input to SearchTerms(title, tag, content)
+
+    @Suppress("Unused")
+    private fun results() = Stream.of(
+        createResult("title:'example'", title = "example"),
+        createResult("title:'example with words'", title = "example with words"),
+        createResult("title:'example with words'", title = "example with words"),
+        createResult("""title:"double quotes"""", title = "double quotes"),
+        createResult("title:'example' something else", title = "example", content = "something else"),
+        createResult("tag:'example'", tag = "example"),
+        createResult("tag:'example' title:'other'", title = "other", tag = "example"),
+        createResult("blah blah tag:'example' title:'other'", title = "other", tag = "example", content = "blah blah"),
+        createResult("tag:'example' middle title:'other'", title = "other", tag = "example", content = "middle"),
+        createResult("tag:'example' title:'other' end", title = "other", tag = "example", content = "end"),
+        createResult("tag:'example abc' title:'other with words' this is the end  ", title = "other with words", tag = "example abc", content = "this is the end"),
+    )
+
+    @ParameterizedTest
+    @MethodSource("results")
+    fun `valid search parser`(case: Pair<String, SearchTerms>) {
+        assertThat(parseSearchTerms(case.first)).isEqualTo(case.second)
+    }
+
+}