test_coverage.md

Test Coverage

Properties

• Empty dataframe
  • Has dimensions (0, 0)
  • Has 8 empty vectors
  • No column indices

Operations

• addColumn

  • Adding a boxed vector to an empty dataframe creates a new column boxed containing the vector elements. DONE
  • Adding a boxed vector with a boxed type (Int/Double) to an empty dataframe creates a new column unboxed containing the vector elements. DONE
  • Adding columns > initial vector size gracefully adds a column that we can retrieve. DONE
  • Adding columns > initial vector size gracefully adds a column updates dimentions. DONE
  • Adding a column with the same name as an existing column overwrites the contents. DONE
  • Adding a column with more values than the current DF dimensions throws an exception. DONE
  • Adding a column with less values than the current DF dimensions adds column with optionals. DONE

• addColumnWithDefault

  • Adding a column with less values than the current DF dimensions adds column with optionals. DONE
  • Adding a column with as many values is a no-op. DONE

• apply

  • Applying to an existing column maps function to all values. DONE
  • Applying to non-existent column throws column not found exception. DONE
  • Applying function of wrong type throws exception. DONE

• applyMany

  • Applying many does same transformation to all columns. DONE
  • Applying many doesn't change unrelated fields. DONE
  • Applying many fails if any of the columns are not found. DONE
  • Applying many throws exception when the function type doesn't equal. DONE

• applyWhere

  • Applies function when target column criteria is met
  • When criterion column doesn't exist throw an error.
  • When the type of the target column doesn't exit throw an error.
  • When the function has the wrong type throw an error.

• derive

  • Applies function to given column and adds it to alias.
  • When column doesn't exist throw an error.

• applyAtIndex

  • Applies function to row at index.
  • Does nothing if index is out of range.
  • Throws an error if the column doesn't exist.

• take

  • Takes correct number of elements.
  • If # elements is less n then don't change the column.
  • If arg is negative then don't change the

• filter

  • Filters column as expected
  • Filter on non existent values returns dataframe with (0,0) dimensions.

• valueCounts

  • Counts values as expected.
  • Throws error when column doesn't exist.

• select

  • Selects a subset of the columns on select
  • Check that dimensions update after select
  • Add new column to result of selected column
  • Updates free indices on select

• exclude

  • Drops a subset of the columns on exclude
  • Check that dimensions update after exclude
  • Add new column to result of exclude column
  • Updates free indices on exclude

• groupBy

  • Groups by a column if at exist and other columns are vectors of vectors
  • Groups by a number of columns if they exist and other columns are vectors of vectors
  • If any column doesn't exist throw an error.

• reduceBy

  • Reduces by a vector column
  • Throws an exception when the column doesn't exist.
  • Throws an error when the wrong type is passed into the function
  • Throws an error when the vector is of the wrong type.

• combine

  • Combines two unboxed columns into an unboxed column if function returns unboxed type.
  • Combines two unboxed columns into an boxed column if function returns boxed type.
  • Combines two boxed columns into an unboxed column if function returns unboxed type.
  • Combines two boxed columns into an boxed column if function returns boxed type.
  • Throws error if any of the columns doesn't exist.
  • Throws type mismatch.

• parseDefault

  • unsigned integer defaults to int,
  • decimal point number defaults to double.
  • Fallback to text.

• sortBy

  • Sorts by a given column.
  • Throws an error if it doesn't exist.

• columnInfo

  • Return correct types and lengths.

Plotting

CSV I/O