tests ~ reorganize tests

tests/by-util/test_base64.rs

@@ -0,0 +1,79 @@
+use crate::common::util::*;
+
+#[test]
+fn test_encode() {
+    let input = "hello, world!";
+    new_ucmd!()
+        .pipe_in(input)
+        .succeeds()
+        .stdout_only("aGVsbG8sIHdvcmxkIQ==\n");
+}
+
+#[test]
+fn test_decode() {
+    for decode_param in vec!["-d", "--decode"] {
+        let input = "aGVsbG8sIHdvcmxkIQ==";
+        new_ucmd!()
+            .arg(decode_param)
+            .pipe_in(input)
+            .succeeds()
+            .stdout_only("hello, world!");
+    }
+}
+
+#[test]
+fn test_garbage() {
+    let input = "aGVsbG8sIHdvcmxkIQ==\0";
+    new_ucmd!()
+        .arg("-d")
+        .pipe_in(input)
+        .fails()
+        .stderr_only("base64: error: invalid input\n");
+}
+
+#[test]
+fn test_ignore_garbage() {
+    for ignore_garbage_param in vec!["-i", "--ignore-garbage"] {
+        let input = "aGVsbG8sIHdvcmxkIQ==\0";
+        new_ucmd!()
+            .arg("-d")
+            .arg(ignore_garbage_param)
+            .pipe_in(input)
+            .succeeds()
+            .stdout_only("hello, world!");
+    }
+}
+
+#[test]
+fn test_wrap() {
+    for wrap_param in vec!["-w", "--wrap"] {
+        let input = "The quick brown fox jumps over the lazy dog.";
+        new_ucmd!()
+            .arg(wrap_param)
+            .arg("20")
+            .pipe_in(input)
+            .succeeds()
+            .stdout_only("VGhlIHF1aWNrIGJyb3du\nIGZveCBqdW1wcyBvdmVy\nIHRoZSBsYXp5IGRvZy4=\n");
+    }
+}
+
+#[test]
+fn test_wrap_no_arg() {
+    for wrap_param in vec!["-w", "--wrap"] {
+        new_ucmd!().arg(wrap_param).fails().stderr_only(format!(
+            "base64: error: Argument to option '{}' missing\n",
+            if wrap_param == "-w" { "w" } else { "wrap" }
+        ));
+    }
+}
+
+#[test]
+fn test_wrap_bad_arg() {
+    for wrap_param in vec!["-w", "--wrap"] {
+        new_ucmd!()
+            .arg(wrap_param)
+            .arg("b")
+            .fails()
+            .stderr_only("base64: error: invalid wrap size: ‘b’: invalid digit found in string\n");
+    }
+}