all-your-base: sync

docs/CONTRIBUTING.md

@@ -157,6 +157,7 @@ There are some custom tera filters in [`rust-tooling`](/rust-tooling/generate/sr
 Here's the hopefully up-to-date list:
 - `to_hex` formats ints in hexadecimal
 - `snake_case` massages an arbitrary string into a decent Rust identifier
+- `make_test_ident` is like snake case, but prepends `test_` if the string starts with a digit
 - `fmt_num` format number literals (insert `_` every third digit)
 
 Feel free to add your own in the crate `rust-tooling`.

exercises/practice/all-your-base/.meta/test_template.tera

@@ -0,0 +1,26 @@
+use allyourbase as ayb;
+
+{% for test in cases %}
+#[test]
+#[ignore]
+fn {{ test.description | make_test_ident }}() {
+    let input_base = {{ test.input.inputBase }};
+    let input_digits = &{{ test.input.digits | json_encode() }};
+    let output_base = {{ test.input.outputBase }};
+    {%- if not test.expected is object %}
+        let output_digits = vec!{{ test.expected | json_encode() }};
+    {%- endif %}
+    assert_eq!(
+        ayb::convert(input_digits, input_base, output_base),
+        {%- if not test.expected is object %}
+            Ok(output_digits)
+        {%- elif test.expected.error == "input base must be >= 2" %}
+            Err(ayb::Error::InvalidInputBase)
+        {%- elif test.expected.error == "all digits must satisfy 0 <= d < input base" %}
+            Err(ayb::Error::InvalidDigit(2))
+        {%- elif test.expected.error == "output base must be >= 2" %}
+            Err(ayb::Error::InvalidOutputBase)
+        {%- endif %}
+    );
+}
+{% endfor -%}

exercises/practice/all-your-base/.meta/tests.toml

@@ -1,6 +1,13 @@
-# This is an auto-generated file. Regular comments will be removed when this
-# file is regenerated. Regenerating will not touch any manually added keys,
-# so comments can be added in a "comment" key.
+# This is an auto-generated file.
+#
+# Regenerating this file via `configlet sync` will:
+# - Recreate every `description` key/value pair
+# - Recreate every `reimplements` key/value pair, where they exist in problem-specifications
+# - Remove any `include = true` key/value pair (an omitted `include` key implies inclusion)
+# - Preserve any other key/value pair
+#
+# As user-added comments (using the # character) will be removed when this file
+# is regenerated, comments can be added via a `comment` key.
 
 [5ce422f9-7a4b-4f44-ad29-49c67cb32d2c]
 description = "single bit one to decimal"
@@ -23,6 +30,9 @@ description = "trinary to hexadecimal"
 [d3901c80-8190-41b9-bd86-38d988efa956]
 description = "hexadecimal to trinary"
 
+[5d42f85e-21ad-41bd-b9be-a3e8e4258bbf]
+description = "15-bit integer"
+
 [d68788f7-66dd-43f8-a543-f15b6d233f83]
 description = "empty list"
 
@@ -41,6 +51,16 @@ description = "input base is one"
 [e21a693a-7a69-450b-b393-27415c26a016]
 description = "input base is zero"
 
+[54a23be5-d99e-41cc-88e0-a650ffe5fcc2]
+description = "input base is negative"
+include = false
+comment = "we use unsigned integers"
+
+[9eccf60c-dcc9-407b-95d8-c37b8be56bb6]
+description = "negative digit"
+include = false
+comment = "we use unsigned integers"
+
 [232fa4a5-e761-4939-ba0c-ed046cd0676a]
 description = "invalid positive digit"
 
@@ -49,3 +69,13 @@ description = "output base is one"
 
 [73dac367-da5c-4a37-95fe-c87fad0a4047]
 description = "output base is zero"
+
+[13f81f42-ff53-4e24-89d9-37603a48ebd9]
+description = "output base is negative"
+include = false
+comment = "we use unsigned integers"
+
+[0e6c895d-8a5d-4868-a345-309d094cfe8d]
+description = "both bases are negative"
+include = false
+comment = "we use unsigned integers"

exercises/practice/all-your-base/tests/all-your-base.rs

@@ -92,7 +92,7 @@ fn hexadecimal_to_trinary() {
 
 #[test]
 #[ignore]
-fn fifteen_bit_integer() {
+fn test_15_bit_integer() {
     let input_base = 97;
     let input_digits = &[3, 46, 60];
     let output_base = 73;
@@ -157,20 +157,20 @@ fn leading_zeros() {
 
 #[test]
 #[ignore]
-fn invalid_positive_digit() {
-    let input_base = 2;
-    let input_digits = &[1, 2, 1, 0, 1, 0];
+fn input_base_is_one() {
+    let input_base = 1;
+    let input_digits = &[0];
     let output_base = 10;
     assert_eq!(
         ayb::convert(input_digits, input_base, output_base),
-        Err(ayb::Error::InvalidDigit(2))
+        Err(ayb::Error::InvalidInputBase)
     );
 }
 
 #[test]
 #[ignore]
-fn input_base_is_one() {
-    let input_base = 1;
+fn input_base_is_zero() {
+    let input_base = 0;
     let input_digits = &[];
     let output_base = 10;
     assert_eq!(
@@ -181,25 +181,25 @@ fn input_base_is_one() {
 
 #[test]
 #[ignore]
-fn output_base_is_one() {
+fn invalid_positive_digit() {
     let input_base = 2;
-    let input_digits = &[1, 0, 1, 0, 1, 0];
-    let output_base = 1;
+    let input_digits = &[1, 2, 1, 0, 1, 0];
+    let output_base = 10;
     assert_eq!(
         ayb::convert(input_digits, input_base, output_base),
-        Err(ayb::Error::InvalidOutputBase)
+        Err(ayb::Error::InvalidDigit(2))
     );
 }
 
 #[test]
 #[ignore]
-fn input_base_is_zero() {
-    let input_base = 0;
-    let input_digits = &[];
-    let output_base = 10;
+fn output_base_is_one() {
+    let input_base = 2;
+    let input_digits = &[1, 0, 1, 0, 1, 0];
+    let output_base = 1;
     assert_eq!(
         ayb::convert(input_digits, input_base, output_base),
-        Err(ayb::Error::InvalidInputBase)
+        Err(ayb::Error::InvalidOutputBase)
     );
 }
 

rust-tooling/generate/src/custom_filters.rs

@@ -7,6 +7,7 @@ type Filter = fn(&Value, &HashMap<String, Value>) -> Result<Value>;
 pub static CUSTOM_FILTERS: &[(&str, Filter)] = &[
     ("to_hex", to_hex),
     ("snake_case", snake_case),
+    ("make_test_ident", make_test_ident),
     ("fmt_num", fmt_num),
 ];
 
@@ -33,6 +34,21 @@ pub fn snake_case(value: &Value, _args: &HashMap<String, Value>) -> Result<Value
     ))
 }
 
+pub fn make_test_ident(value: &Value, _args: &HashMap<String, Value>) -> Result<Value> {
+    let value = snake_case(value, _args)?;
+    let Some(value) = value.as_str() else {
+        return Err(tera::Error::call_filter(
+            "make_test_ident filter expects a string",
+            "serde_json::value::Value::as_str",
+        ));
+    };
+    if !value.chars().next().unwrap_or_default().is_alphabetic() {
+        // identifiers cannot start with digits etc.
+        return Ok(Value::String(format!("test_{value}")));
+    }
+    Ok(Value::String(value.into()))
+}
+
 pub fn fmt_num(value: &Value, _args: &HashMap<String, Value>) -> Result<Value> {
     let Some(value) = value.as_number() else {
         return Err(tera::Error::call_filter(