Add tests for generators

[rbdr/blog] / src / generator / mod.rs

diff --git a/src/generator/mod.rs b/src/generator/mod.rs
index 293ad7df59d16af38a5d1c4dbe547471a86f3bf7..55946afb57f86f9e2f1e0a3c1fac7218583a121d 100644 (file)
--- a/src/generator/mod.rs
+++ b/src/generator/mod.rs
@@ -4,18 +4,20 @@ mod static_files;
 mod txt;
 
 use crate::post::Post;
-use crate::template::TemplateContext;
+use crate::template::Context;
 use std::io::Result;
-use std::path::PathBuf;
+use std::path::Path;
+
+type Generator = fn(&Path, &Path, &Path, &Context) -> Result<()>;
 
 pub fn generate(
-    static_directory: &PathBuf,
-    template_directory: &PathBuf,
-    output_directory: &PathBuf,
-    posts: &Vec<Post>,
+    static_directory: &Path,
+    template_directory: &Path,
+    output_directory: &Path,
+    posts: &[Post],
 ) -> Result<()> {
     let generators = available_generators();
-    let context = Post::to_template_context(&posts);
+    let context = Post::to_template_context(posts);
     for generator in generators {
         generator(
             static_directory,
@@ -27,7 +29,7 @@ pub fn generate(
     Ok(())
 }
 
-fn available_generators() -> Vec<fn(&PathBuf, &PathBuf, &PathBuf, &TemplateContext) -> Result<()>> {
+fn available_generators() -> Vec<Generator> {
     vec![
         static_files::generate,
         // These three are actually the same. Can generalize, don't know how in rust yet.
@@ -36,3 +38,150 @@ fn available_generators() -> Vec<fn(&PathBuf, &PathBuf, &PathBuf, &TemplateConte
         txt::generate,
     ]
 }
+
+#[cfg(test)]
+mod tests {
+    use std::fs::create_dir_all;
+
+    use super::*;
+
+    use crate::metadata::Metadata;
+    use crate::post::Post;
+
+    use test_utilities::*;
+
+    #[test]
+    fn test_generates() {
+        let test_dir = setup_test_dir();
+        let static_dir = test_dir.join("static");
+        let template_dir = test_dir.join("templates");
+        let output_dir = test_dir.join("output");
+
+        create_dir_all(&static_dir).expect("Could not create static directory");
+        create_dir_all(&template_dir).expect("Could not create template directory");
+        create_dir_all(&output_dir).expect("Could not create output directory");
+        create_test_file(&static_dir.join("file.txt"), "wow");
+        create_test_file(
+            &template_dir.join("index.html"),
+            "\
+{{~ posts:post }}
+    {{= post.html }}
+{{~}}
+",
+        );
+        create_test_file(
+            &template_dir.join("feed.xml"),
+            "\
+{{~ posts:post }}
+    {{= post.id }}
+{{~}}
+",
+        );
+        create_test_file(
+            &template_dir.join("index.txt"),
+            "\
+{{~ posts:post }}
+    {{= post.raw }}
+{{~}}
+",
+        );
+        let posts = vec![
+            Post {
+                metadata: Metadata {
+                    id: "1736035200000".to_string(),
+                    created_on: 1_736_035_200_000,
+                },
+                index: 9,
+                html: "<p>Generatorial</p>".to_string(),
+                raw: "electricity generator".to_string(),
+            },
+            Post {
+                metadata: Metadata {
+                    id: "1736045200000".to_string(),
+                    created_on: 1_736_045_200_000,
+                },
+                index: 10,
+                html: "<p>Generation</p>".to_string(),
+                raw: "kero kero".to_string(),
+            },
+        ];
+
+        generate(&static_dir, &template_dir, &output_dir, &posts).expect("Generate failed");
+
+        assert_file_contents(&output_dir.join("file.txt"), "wow");
+        assert_file_contents(
+            &output_dir.join("index.html"),
+            "\
+<p>Generatorial</p>
+
+    <p>Generation</p>
+",
+        );
+        assert_file_contents(
+            &output_dir.join("feed.xml"),
+            "\
+1736035200000
+
+    1736045200000
+",
+        );
+    }
+
+    #[test]
+    fn test_fails_if_directories_do_not_exist() {
+        let test_dir = setup_test_dir();
+        let static_dir = test_dir.join("static");
+        let template_dir = test_dir.join("templates");
+        let output_dir = test_dir.join("output");
+        let posts = vec![];
+
+        let result = generate(&static_dir, &template_dir, &output_dir, &posts);
+
+        assert!(result.is_err());
+    }
+
+    #[test]
+    fn test_fails_if_a_generator_fails() {
+        let test_dir = setup_test_dir();
+        let static_dir = test_dir.join("static");
+        let template_dir = test_dir.join("templates");
+        let output_dir = test_dir.join("output");
+
+        create_dir_all(&static_dir).expect("Could not create static directory");
+        create_dir_all(&template_dir).expect("Could not create template directory");
+        create_dir_all(&output_dir).expect("Could not create output directory");
+        create_test_file(&static_dir.join("file.txt"), "wow");
+        create_test_file(
+            &template_dir.join("index.html"),
+            "\
+{{~ posts:post }}
+    {{ post.html }}
+{{~}}
+",
+        );
+        let posts = vec![
+            Post {
+                metadata: Metadata {
+                    id: "1736035200000".to_string(),
+                    created_on: 1_736_035_200_000,
+                },
+                index: 9,
+                html: "<p>Generatorial</p>".to_string(),
+                raw: "electricity generator".to_string(),
+            },
+            Post {
+                metadata: Metadata {
+                    id: "1736045200000".to_string(),
+                    created_on: 1_736_045_200_000,
+                },
+                index: 10,
+                html: "<p>Generation</p>".to_string(),
+                raw: "kero kero".to_string(),
+            },
+        ];
+
+        let result = generate(&static_dir, &template_dir, &output_dir, &posts);
+
+        assert!(result.is_err());
+    }
+}