Command tests (#922)

* WIP command tests

* Finish marking todo tests

* update

* update

* Windows cd test ignoring

crates/nu-command/tests/commands/random/bool.rs

@@ -0,0 +1,16 @@
+use nu_test_support::{nu, pipeline};
+
+#[test]
+fn generates_a_bool() {
+    let actual = nu!(
+        cwd: ".", pipeline(
+        r#"
+        random bool
+        "#
+    ));
+
+    let output = actual.out;
+    let is_boolean_output = output == "true" || output == "false";
+
+    assert!(is_boolean_output);
+}

crates/nu-command/tests/commands/random/chars.rs

@@ -0,0 +1,14 @@
+use nu_test_support::{nu, pipeline};
+
+#[test]
+fn generates_chars_of_specified_length() {
+    let actual = nu!(
+        cwd: ".", pipeline(
+        r#"
+        random chars -l 15 | size | get chars
+        "#
+    ));
+
+    let result = actual.out;
+    assert_eq!(result, "15");
+}

crates/nu-command/tests/commands/random/decimal.rs

@@ -0,0 +1,43 @@
+use nu_test_support::{nu, pipeline};
+
+// FIXME: jt: needs more work
+#[ignore]
+#[test]
+fn generates_an_decimal() {
+    let actual = nu!(
+        cwd: ".", pipeline(
+        r#"
+        random decimal 42..43
+        "#
+    ));
+
+    assert!(actual.out.contains("42") || actual.out.contains("43"));
+}
+
+// FIXME: jt: needs more work
+#[ignore]
+#[test]
+fn generates_55() {
+    let actual = nu!(
+        cwd: ".", pipeline(
+        r#"
+        random decimal 55..55
+        "#
+    ));
+
+    assert!(actual.out.contains("55"));
+}
+
+// FIXME: jt: needs more work
+#[ignore]
+#[test]
+fn generates_0() {
+    let actual = nu!(
+        cwd: ".", pipeline(
+        r#"
+        random decimal ..<1
+        "#
+    ));
+
+    assert!(actual.out.contains('0'));
+}

crates/nu-command/tests/commands/random/dice.rs

@@ -0,0 +1,13 @@
+use nu_test_support::{nu, pipeline};
+
+#[test]
+fn rolls_4_roll() {
+    let actual = nu!(
+        cwd: ".", pipeline(
+        r#"
+        random dice -d 4 -s 10 | length
+        "#
+    ));
+
+    assert_eq!(actual.out, "4");
+}

crates/nu-command/tests/commands/random/integer.rs

@@ -0,0 +1,39 @@
+use nu_test_support::{nu, pipeline};
+
+#[test]
+fn generates_an_integer() {
+    let actual = nu!(
+        cwd: ".", pipeline(
+        r#"
+        random integer 42..43
+        "#
+    ));
+
+    assert!(actual.out.contains("42") || actual.out.contains("43"));
+}
+
+#[test]
+fn generates_55() {
+    let actual = nu!(
+        cwd: ".", pipeline(
+        r#"
+        random integer 55..55
+        "#
+    ));
+
+    assert!(actual.out.contains("55"));
+}
+
+// FIXME: jt: needs more work
+#[ignore]
+#[test]
+fn generates_0() {
+    let actual = nu!(
+        cwd: ".", pipeline(
+        r#"
+        random integer ..<1
+        "#
+    ));
+
+    assert!(actual.out.contains('0'));
+}

crates/nu-command/tests/commands/random/mod.rs

@@ -0,0 +1,7 @@
+mod bool;
+mod chars;
+mod decimal;
+mod dice;
+mod integer;
+#[cfg(feature = "uuid_crate")]
+mod uuid;

crates/nu-command/tests/commands/random/uuid.rs

@@ -0,0 +1,16 @@
+use nu_test_support::{nu, pipeline};
+use uuid_crate::Uuid;
+
+#[test]
+fn generates_valid_uuid4() {
+    let actual = nu!(
+        cwd: ".", pipeline(
+        r#"
+        random uuid
+        "#
+    ));
+
+    let result = Uuid::parse_str(actual.out.as_str());
+
+    assert!(result.is_ok());
+}