Rust - Proverb Complete

kotlin/forth/src/test/kotlin/ForthEvaluatorTest.kt

@@ -28,7 +28,6 @@ class ForthEvaluatorTest {
                 forthEvaluator.evaluateProgram(emptyList()))
     }
 
-    @Ignore
     @Test
     fun testNumbersAreJustPushedOntoTheStack() {
         assertEquals(
@@ -36,7 +35,6 @@ class ForthEvaluatorTest {
                 forthEvaluator.evaluateProgram(listOf("1 2 3 4 5")))
     }
 
-    @Ignore
     @Test
     fun testTwoNumbersCanBeAdded() {
         assertEquals(
@@ -44,7 +42,6 @@ class ForthEvaluatorTest {
                 forthEvaluator.evaluateProgram(listOf("1 2 +")))
     }
 
-    @Ignore
     @Test
     fun testErrorIfAdditionAttemptedWithNothingOnTheStack() {
         expectedException.expect(IllegalArgumentException::class.java)
@@ -53,7 +50,6 @@ class ForthEvaluatorTest {
         forthEvaluator.evaluateProgram(listOf("+"))
     }
 
-    @Ignore
     @Test
     fun testErrorIfAdditionAttemptedWithOneNumberOnTheStack() {
         expectedException.expect(IllegalArgumentException::class.java)
@@ -62,7 +58,6 @@ class ForthEvaluatorTest {
         forthEvaluator.evaluateProgram(listOf("1 +"))
     }
 
-    @Ignore
     @Test
     fun testTwoNumbersCanBeSubtracted() {
         assertEquals(
@@ -70,7 +65,6 @@ class ForthEvaluatorTest {
                 forthEvaluator.evaluateProgram(listOf("3 4 -")))
     }
 
-    @Ignore
     @Test
     fun testErrorIfSubtractionAttemptedWithNothingOnTheStack() {
         expectedException.expect(IllegalArgumentException::class.java)
@@ -79,7 +73,6 @@ class ForthEvaluatorTest {
         forthEvaluator.evaluateProgram(listOf("-"))
     }
 
-    @Ignore
     @Test
     fun testErrorIfSubtractionAttemptedWithOneNumberOnTheStack() {
         expectedException.expect(IllegalArgumentException::class.java)
@@ -88,7 +81,6 @@ class ForthEvaluatorTest {
         forthEvaluator.evaluateProgram(listOf("1 -"))
     }
 
-    @Ignore
     @Test
     fun testTwoNumbersCanBeMultiplied() {
         assertEquals(
@@ -96,7 +88,6 @@ class ForthEvaluatorTest {
                 forthEvaluator.evaluateProgram(listOf("2 4 *")))
     }
 
-    @Ignore
     @Test
     fun testErrorIfMultiplicationAttemptedWithNothingOnTheStack() {
         expectedException.expect(IllegalArgumentException::class.java)
@@ -105,7 +96,6 @@ class ForthEvaluatorTest {
         forthEvaluator.evaluateProgram(listOf("*"))
     }
 
-    @Ignore
     @Test
     fun testErrorIfMultiplicationAttemptedWithOneNumberOnTheStack() {
         expectedException.expect(IllegalArgumentException::class.java)
@@ -114,7 +104,6 @@ class ForthEvaluatorTest {
         forthEvaluator.evaluateProgram(listOf("1 *"))
     }
 
-    @Ignore
     @Test
     fun testTwoNumbersCanBeDivided() {
         assertEquals(
@@ -122,7 +111,6 @@ class ForthEvaluatorTest {
                 forthEvaluator.evaluateProgram(listOf("12 3 /")))
     }
 
-    @Ignore
     @Test
     fun testThatIntegerDivisionIsUsed() {
         assertEquals(
@@ -130,7 +118,6 @@ class ForthEvaluatorTest {
                 forthEvaluator.evaluateProgram(listOf("8 3 /")))
     }
 
-    @Ignore
     @Test
     fun testErrorIfDividingByZero() {
         expectedException.expect(IllegalArgumentException::class.java)
@@ -139,7 +126,6 @@ class ForthEvaluatorTest {
         forthEvaluator.evaluateProgram(listOf("4 0 /"))
     }
 
-    @Ignore
     @Test
     fun testErrorIfDivisionAttemptedWithNothingOnTheStack() {
         expectedException.expect(IllegalArgumentException::class.java)
@@ -148,7 +134,6 @@ class ForthEvaluatorTest {
         forthEvaluator.evaluateProgram(listOf("/"))
     }
 
-    @Ignore
     @Test
     fun testErrorIfDivisionAttemptedWithOneNumberOnTheStack() {
         expectedException.expect(IllegalArgumentException::class.java)
@@ -157,7 +142,6 @@ class ForthEvaluatorTest {
         forthEvaluator.evaluateProgram(listOf("1 /"))
     }
 
-    @Ignore
     @Test
     fun testCombinedAdditionAndSubtraction() {
         assertEquals(
@@ -165,7 +149,6 @@ class ForthEvaluatorTest {
                 forthEvaluator.evaluateProgram(listOf("1 2 + 4 -")))
     }
 
-    @Ignore
     @Test
     fun testCombinedMultiplicationAndDivision() {
         assertEquals(
@@ -173,7 +156,6 @@ class ForthEvaluatorTest {
                 forthEvaluator.evaluateProgram(listOf("2 4 * 3 /")))
     }
 
-    @Ignore
     @Test
     fun testDupCopiesTheTopValueOnTheStack() {
         assertEquals(
@@ -181,7 +163,6 @@ class ForthEvaluatorTest {
                 forthEvaluator.evaluateProgram(listOf("1 DUP")))
     }
 
-    @Ignore
     @Test
     fun testDupParsingIsCaseInsensitive() {
         assertEquals(
@@ -189,7 +170,6 @@ class ForthEvaluatorTest {
                 forthEvaluator.evaluateProgram(listOf("1 2 Dup")))
     }
 
-    @Ignore
     @Test
     fun testErrorIfDuplicatingAttemptedWithNothingOnTheStack() {
         expectedException.expect(IllegalArgumentException::class.java)
@@ -198,7 +178,6 @@ class ForthEvaluatorTest {
         forthEvaluator.evaluateProgram(listOf("dup"))
     }
 
-    @Ignore
     @Test
     fun testDropRemovesTheTopValueOnTheStackIfItIsTheOnlyOne() {
         assertEquals(
@@ -206,7 +185,6 @@ class ForthEvaluatorTest {
                 forthEvaluator.evaluateProgram(listOf("1 drop")))
     }
 
-    @Ignore
     @Test
     fun testDropRemovesTheTopValueOnTheStackIfItIsNotTheOnlyOne() {
         assertEquals(
@@ -214,7 +192,6 @@ class ForthEvaluatorTest {
                 forthEvaluator.evaluateProgram(listOf("1 2 drop")))
     }
 
-    @Ignore
     @Test
     fun testErrorIfDroppingAttemptedWithNothingOnTheStack() {
         expectedException.expect(IllegalArgumentException::class.java)
@@ -223,7 +200,6 @@ class ForthEvaluatorTest {
         forthEvaluator.evaluateProgram(listOf("drop"))
     }
 
-    @Ignore
     @Test
     fun testSwapSwapsTheTopTwosValueOnTheStackIfTheyAreTheOnlyOnes() {
         assertEquals(
@@ -231,7 +207,6 @@ class ForthEvaluatorTest {
                 forthEvaluator.evaluateProgram(listOf("1 2 swap")))
     }
 
-    @Ignore
     @Test
     fun testSwapSwapsTheTopTwosValueOnTheStackIfTheyAreNotTheOnlyOnes() {
         assertEquals(
@@ -239,7 +214,6 @@ class ForthEvaluatorTest {
                 forthEvaluator.evaluateProgram(listOf("1 2 3 swap")))
     }
 
-    @Ignore
     @Test
     fun testErrorIfSwappingAttemptedWithNothingOnTheStack() {
         expectedException.expect(IllegalArgumentException::class.java)
@@ -248,7 +222,6 @@ class ForthEvaluatorTest {
         forthEvaluator.evaluateProgram(listOf("swap"))
     }
 
-    @Ignore
     @Test
     fun testErrorIfSwappingAttemptedWithOneNumberOnTheStack() {
         expectedException.expect(IllegalArgumentException::class.java)
@@ -257,7 +230,6 @@ class ForthEvaluatorTest {
         forthEvaluator.evaluateProgram(listOf("1 swap"))
     }
 
-    @Ignore
     @Test
     fun testOverCopiesTheSecondElementIfThereAreOnlyTwo() {
         assertEquals(
@@ -265,7 +237,6 @@ class ForthEvaluatorTest {
                 forthEvaluator.evaluateProgram(listOf("1 2 over")))
     }
 
-    @Ignore
     @Test
     fun testOverCopiesTheSecondElementIfThereAreMoreThanTwo() {
         assertEquals(
@@ -273,7 +244,6 @@ class ForthEvaluatorTest {
                 forthEvaluator.evaluateProgram(listOf("1 2 3 over")))
     }
 
-    @Ignore
     @Test
     fun testErrorIfOveringAttemptedWithNothingOnTheStack() {
         expectedException.expect(IllegalArgumentException::class.java)
@@ -282,7 +252,6 @@ class ForthEvaluatorTest {
         forthEvaluator.evaluateProgram(listOf("over"))
     }
 
-    @Ignore
     @Test
     fun testErrorIfOveringAttemptedWithOneNumberOnTheStack() {
         expectedException.expect(IllegalArgumentException::class.java)
@@ -291,7 +260,6 @@ class ForthEvaluatorTest {
         forthEvaluator.evaluateProgram(listOf("1 over"))
     }
 
-    @Ignore
     @Test
     fun testUserDefinedOperatorsCanConsistOfBuiltInOperators() {
         assertEquals(
@@ -299,7 +267,6 @@ class ForthEvaluatorTest {
                 forthEvaluator.evaluateProgram(listOf(": dup-twice dup dup ;", "1 dup-twice")))
     }
 
-    @Ignore
     @Test
     fun testUserDefinedOperatorsAreEvaluatedInTheCorrectOrder() {
         assertEquals(
@@ -307,7 +274,6 @@ class ForthEvaluatorTest {
                 forthEvaluator.evaluateProgram(listOf(": countup 1 2 3 ;", "countup")))
     }
 
-    @Ignore
     @Test
     fun testCanRedefineAUserDefinedOperator() {
         assertEquals(
@@ -315,7 +281,6 @@ class ForthEvaluatorTest {
                 forthEvaluator.evaluateProgram(listOf(": foo dup ;", ": foo dup dup ;", "1 foo")))
     }
 
-    @Ignore
     @Test
     fun testCanOverrideBuiltInWordOperators() {
         assertEquals(
@@ -323,7 +288,6 @@ class ForthEvaluatorTest {
                 forthEvaluator.evaluateProgram(listOf(": swap dup ;", "1 swap")))
     }
 
-    @Ignore
     @Test
     fun testCanOverrideBuiltInArithmeticOperators() {
         assertEquals(
@@ -331,7 +295,6 @@ class ForthEvaluatorTest {
                 forthEvaluator.evaluateProgram(listOf(": + * ;", "3 4 +")))
     }
 
-    @Ignore
     @Test
     fun testCannotRedefineNumbers() {
         expectedException.expect(IllegalArgumentException::class.java)

rust/proverb/Cargo.toml

@@ -0,0 +1,6 @@
+[package]
+name = "proverb"
+version = "0.0.0"
+authors = ["sacherjj <sacherjj@gmail.com>"]
+
+[dependencies]

rust/proverb/README.md

@@ -0,0 +1,50 @@
+# Proverb
+
+For want of a horseshoe nail, a kingdom was lost, or so the saying goes. Output
+the full text of this proverbial rhyme:
+
+> For want of a nail the shoe was lost.  
+> For want of a shoe the horse was lost.  
+> For want of a horse the rider was lost.  
+> For want of a rider the message was lost.  
+> For want of a message the battle was lost.  
+> For want of a battle the kingdom was lost.  
+> And all for the want of a horseshoe nail.
+
+## Rust Installation
+
+Refer to the [exercism help page][help-page] for Rust installation and learning
+resources.
+
+## Writing the Code
+
+Execute the tests with:
+
+```bash
+$ cargo test
+```
+
+All but the first test have been ignored.  After you get the first test to
+pass, remove the ignore flag (`#[ignore]`) from the next test and get the tests
+to pass again.  The test file is located in the `tests` directory.   You can
+also remove the ignore flag from all the tests to get them to run all at once
+if you wish.
+
+Make sure to read the [Crates and Modules](https://doc.rust-lang.org/stable/book/crates-and-modules.html) chapter if you
+haven't already, it will help you with organizing your files.
+
+## Feedback, Issues, Pull Requests
+
+The [exercism/rust](https://github.com/exercism/rust) repository on GitHub is the home for all of the Rust exercises. If you have feedback about an exercise, or want to help implement new exercises, head over there and create an issue. Members of the [rust track team](https://github.com/orgs/exercism/teams/rust) are happy to help!
+
+If you want to know more about Exercism, take a look at the [contribution guide](https://github.com/exercism/docs/blob/master/contributing-to-language-tracks/README.md).
+
+[help-page]: http://exercism.io/languages/rust
+[crates-and-modules]: http://doc.rust-lang.org/stable/book/crates-and-modules.html
+
+## Source
+
+Wikipedia [http://en.wikipedia.org/wiki/For_Want_of_a_Nail](http://en.wikipedia.org/wiki/For_Want_of_a_Nail)
+
+## Submitting Incomplete Solutions
+It's possible to submit an incomplete solution so you can see how others have completed the exercise.

rust/proverb/src/lib.rs

@@ -0,0 +1 @@
+pub fn build_proverb(list: Vec<&str>) -> String {
    if list.len() == 0 { return String::from("") }

    let last_line = if list.len() > 2 { String::from("And all for the want of a horseshoe nail.") }
        else { String::from("And all for the want of a ") + list.first().unwrap() + &String::from(".") };

    let mut return_vec: Vec<String> = Vec::new();

    for i in 0..list.len()-1 {
        return_vec.push(String::from("For want of a ") + list[i] + &String::from(" the ") + list[i+1] + &String::from(" was lost."))
    }

    return_vec.push(last_line);
    return return_vec.join("\n")
}

rust/proverb/tests/proverb.rs

@@ -0,0 +1,48 @@
+extern crate proverb;
+
+use proverb::build_proverb;
+
+#[test]
+fn test_two_pieces() {
+    let input = vec!["nail", "shoe"];
+    let expected = vec!["For want of a nail the shoe was lost.",
+                        "And all for the want of a nail."].join("\n");
+    assert_eq!(build_proverb(input), expected);
+}
+
+// Notice the change in the last line at three pieces.
+#[test]
+fn test_three_pieces() {
+    let input = vec!["nail", "shoe", "horse"];
+    let expected = vec!["For want of a nail the shoe was lost.",
+                        "For want of a shoe the horse was lost.",
+                        "And all for the want of a horseshoe nail."].join("\n");
+    assert_eq!(build_proverb(input), expected);
+}
+
+#[test]
+fn test_one_piece() {
+    let input = vec!["nail"];
+    let expected = String::from("And all for the want of a nail.");
+    assert_eq!(build_proverb(input), expected);
+}
+
+#[test]
+fn test_zero_pieces() {
+    let input: Vec<&str> = vec![];
+    let expected = String::new();
+    assert_eq!(build_proverb(input), expected);
+}
+
+#[test]
+fn test_full() {
+    let input = vec!["nail", "shoe", "horse", "rider", "message", "battle", "kingdom"];
+    let expected = vec!["For want of a nail the shoe was lost.",
+                        "For want of a shoe the horse was lost.",
+                        "For want of a horse the rider was lost.",
+                        "For want of a rider the message was lost.",
+                        "For want of a message the battle was lost.",
+                        "For want of a battle the kingdom was lost.",
+                        "And all for the want of a horseshoe nail."].join("\n");
+    assert_eq!(build_proverb(input), expected);
+}