Add Utils for parsing path parts to a directory

1 files changed, 40 insertions, 0 deletions

diff --git a/app/src/test/java/org/the_jk/cleversync/StringUtilsTest.kt b/app/src/test/java/org/the_jk/cleversync/StringUtilsTest.kt
new file mode 100644
index 0000000..6a36156
--- /dev/null
+++ b/app/src/test/java/org/the_jk/cleversync/StringUtilsTest.kt
@@ -0,0 +1,40 @@
+package org.the_jk.cleversync
+
+import com.google.common.truth.Truth.assertThat
+import org.junit.Test
+
+class StringUtilsTest {
+    @Test
+    fun splitEmpty() {
+        assertThat(StringUtils.split("", '.', keepEmpty = true)).containsExactly("")
+        assertThat(StringUtils.split("", '.', keepEmpty = false)).isEmpty()
+    }
+
+    @Test
+    fun splitSanity() {
+        assertThat(StringUtils.split("a.bb.a", '.')).containsExactly("a", "bb", "a").inOrder()
+        assertThat(StringUtils.split(".a.bb.a", '.', keepEmpty = true)).containsExactly("", "a", "bb", "a").inOrder()
+        assertThat(StringUtils.split(".a.bb.a", '.', keepEmpty = false)).containsExactly("a", "bb", "a").inOrder()
+        assertThat(StringUtils.split(".a.bb.a.", '.', keepEmpty = true))
+            .containsExactly("", "a", "bb", "a", "").inOrder()
+        assertThat(StringUtils.split(".a.bb.a.", '.', keepEmpty = false)).containsExactly("a", "bb", "a").inOrder()
+    }
+
+    @Test
+    fun splitDouble() {
+        assertThat(StringUtils.split("foo..bar", '.', keepEmpty = true)).containsExactly("foo", "", "bar").inOrder()
+        assertThat(StringUtils.split("foo..bar", '.', keepEmpty = false)).containsExactly("foo", "bar").inOrder()
+    }
+
+    @Test
+    fun splitLimit() {
+        assertThat(StringUtils.split("a.bb.a", '.', limit = 1)).containsExactly("a.bb.a")
+        assertThat(StringUtils.split("a.bb.a", '.', limit = 2)).containsExactly("a", "bb.a").inOrder()
+        assertThat(StringUtils.split("a.bb.a", '.', limit = 3)).containsExactly("a", "bb", "a").inOrder()
+        assertThat(StringUtils.split("a.bb.a.", '.', limit = 3, keepEmpty = true))
+            .containsExactly("a", "bb", "a.").inOrder()
+        assertThat(StringUtils.split("a.bb.a.", '.', limit = 3, keepEmpty = false))
+            .containsExactly("a", "bb", "a").inOrder()
+        assertThat(StringUtils.split("a.bb.a", '.', limit = 1000)).containsExactly("a", "bb", "a").inOrder()
+    }
+}